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I'm pretty sure I still have to work on writing sex scenes, but I guess it's ok X'D

Sequel -> https://inkbunny.net/submissionview.php?id=945182", "writing": "Donatello’s Journal\n\nMating Season Notes:\n\nMating Season started to show its effect on the four of us around the age of 13. The symptoms consisted of uncontrollable erections and mood swings or aggression, all caused by hormonal misbalance, varying from individual to individual.\n\nLeonardo:\n\nIt wasn’t until we were 16 years old that the animalistic instinct to breed surfaced. In spring (mating season) that year Leonardo had started acting unusual, even considering the time of the year.\nMuch like the random uncontrollable erections, Leonardo started having ‘horny’ moments. During these times, which increased in durance as the season progressed, his behavior changed drastically. He started stalking Raphael, Michelangelo and myself, following us around, watching and sniffing us without a word, from time to time producing a purr-like noise (churr) while doing so.\n\nLeonardo’s first attempt at mating happened about a week into mating season, during practice. He had been sparring with Michelangelo while I sparred with Raphael and at some point he had Michelangelo pinned beneath him. Leonardo started by making a churr and sniffing Michelangelo’s neck, followed by a lick and then he had started bucking his hips. At this point Master Splinter had tried to tell Leonardo to get off our brother, but there was no reaction whatsoever. Raphael and I pulled him off of Michelangelo just as Leonardo had dropped down, his phallus already erect. He kept bucking in need and even attempted to turn onto either Raphael or me instead, but our grip on him was too strong at that time and only a few minutes later he had already returned to his normal state.\nLeonardo stated his memory had been a blurr, he could not recall trying to mate Michelangelo or being restrained by Raphael and myself.\nMaster Splinter excused himself to meditate on this new situation afterwards to try and decide what would be the most appropriate reaction to this new issue of control loss. He hadn’t shown up again for the rest of the evening, he hadn’t been sure whether he should do the drastic and make sure to keep Leonardo away from us until mating season had passed or whether he should just tell the three of us to stay together at all times until Leonardo’s state was no threat anymore.\n\nHis decision came too late though as that night Leonardo’s next ‘horny’ moment surfaced right after he had lead me from my lab to bed. He had just told me good night and turned to leave when I had heard him take a long sniff and churr.\nI had already been lying in bed and covered by my blanket so even as I guessed what was going on my reaction had been too slow and I could not stop Leonardo from lying down on top of me. He had grabbed my wrists to pin me down and started sniffing and licking my neck while churring, just like he had done a few hours prior with Michelangelo. I tried to squirm free and get him off of me when he started to buck his hips, but his hold on me didn’t give me a chance to escape.\nHe churred again as he dropped down and started thrusting against my blanket. I noticed him pulling a face in discomfort at the contact of fabric against his erection instead of skin and he took one hand off my wrists to use a hand and his legs to slowly move the blanket down and out of the way. I had tried to push him off with my newly freed arm, but as I tried Leonardo leaned down more with all his weight and bit into my left shoulder, not letting go. His bite hadn’t drawn blood, it was only an instinctual act with the purpose to keep a chosen mate still, to make them stay in place and not try to squirm free.\nWith the blanket then out of the way, Leonardo moved both hands to hold my arms against my sides and he kept the grip he had on my shoulder with his teeth as he lowered himself and bucked against my back end. I could feel the tip of his penis rub against my tail which was curled up to cover my cloaca as it usually was.\nThough the light friction was enough stimuli for my small appendage to uncurl and move out of the way on its own, much to my dismay as the next moment I felt the tip of Leonardo’s phallus press against the muscle ring of my opening. At that moment I had become desperate and began to call out, for help, for Leonardo to stop and snap out of his hormonal induced state, but my cries had fallen to deaf ears since Master Splinter and my other two brothers had already been fast asleep, too deep asleep to hear the calling coming from my room and Leonardo had the same response as he had had for Splinter earlier: None.\nI cried out and tensed in pain as I felt the tip push inside. Leonardo only tightened his grip on me with his hands and teeth, churring before continuing to push. He entered me slowly, almost carefully, yet it still hurt, it had felt unnatural, as though Leonardo’s organ had never been meant to fit in there and now his big pulsating member was ripping open my insides. I whimpered while he kept pushing in deeper, churring and moaning as he hilted himself inside me.\nHe waited for a bit, deep inside me, his grip on me still very tight, tense until I started to relax slightly, adjusting to the size of his phallus slowly. As soon as he noticed my tension lift he began to pull out slowly until he was only halfway in, waited for a moment and then pushed in to the hilt again. He started slowly, in to the hilt and halfway out again for a while. I relaxed a little more, it still hurt a bit but at some point it also started to feel good in some way. I felt his teeth let go of my shoulder and he licked the bite as if trying to make it better or say sorry for hurting me, either way right after this non-verbal ‘sorry’ he lightly bit the side of my neck and churred again as he gave a hard thrust. I could not help but let out a small moan due to that particular shove striking and so stimulating the cluster of nerves inside me.\nThis time when he pulled out slowly, Leonardo went nearly all the way, so only his tip was still inside and then pushed back in, this being the new cycle, from hilt to tip and back. His pace had also increased and it kept increasing bit by bit with another hard shove every now and then. I whimpered as Leonardo bit hard enough on the side of my neck to leave a mark before licking it, then he moved on to the other side of my neck and just nuzzled me for a moment. Another especially hard thrust and Leonardo’s teeth clamped down again, this time in the crook between my neck and shoulder on the right side.\nSoon Leonardo’s thrusting became faster and harder and he started to pant against my skin. His pace increased constantly until my bed started to creak in response beneath us. He churred again and grunted while giving a bunch of hard and deep thrusts.\nI felt something warm spreading into me from where he pound into my rectum as he went as deep as possible and came, creating a long and almost cry-like moan while clamping down on my arms and shoulder much harder than before. It hurt, so I too cried out. I had lost my sense of time at some point when he had started to pound me so I don’t know how long his climax lasted, but it ended with one last very hard thrust, then he stayed deep inside, churred and shook for a moment as he spent the very last drops of his sperm and collapsed on top of me.\nThen finally he let go of my shoulder, licking the wound which, other than the other bite-marks I had received from Leonardo, had started to bleed. His grip on my arms also loosened so that I would have had the chance to finally push him off, but I was too exhausted at the moment and so simply waited until he finished licking the bleeding bite-wound, pulled his flaccid phallus out of my cloaca and got up to leave.\nI fell asleep from the exhaustion and light pain in my rectum and shoulders soon after Leonardo had left my room.\n\nThe next day Leonardo had acted like usual, though the effect mating season had on him seemed to have lifted a bit, he seemed more relaxed. He didn’t act strange towards me so I figured that his consciousness had blacked out as his instincts to mate had taken over the night before and so he could not remember what he had done to me.\nI had treated the bites before breakfast as much as I could so they were hardly visible by the time I met up with my family, save for the one that had bled. I had covered it with some gauze and told the others I had rolled out of bed and landed on a screwdriver, injuring my shoulder. I lied to keep what Leonardo had done to me in his hormonal induced state a secret, deciding that would be for the better since no one besides me knew what happened anyway. Also Master Splinter had decided that from now on the three of us without Leonardo were to stay together the whole time during mating season so no one would have to fear to have to face a horny Leonardo on their own (kind of ironic, I might add here) and he asked us to lock our rooms when we went to bed.\nThis worked out very well for the rest of that years mating season, even as Leonardo’s state worsened again and the last few days it seemed as though he didn’t snap out of it at all.\n\nConclusion:\n- very clingy; tight grip\n- bites a lot and hard (leaves deep bite-marks, can eventually draw blood)\n- starts slow and careful\n-> Control Freak\n\nRaphael:\n\n17 years, mating season.\nLeonardo acted just like the previous year, so Raphael, Michelangelo and I took on the strategy we had developed in response to Leonardo’s mating instincts. It worked very well and we went about one and a half weeks into mating season without any incidents.\nI had noticed Raphael acting kind of odd this year as well, though he didn’t seem to change as drastically as Leonardo had the year before, that is why I had not thought much of it as Raphael became quieter than usual, started to watch Michelangelo and me closer and even began to sniff us from time to time.\n\nI regretted not being more careful about these warning signals one time, while Leonardo had been in the dojo with Master Splinter to meditate and try to keep his instincts under control and while Michelangelo had been in the bathroom to take a shower. Raphael and I waited together in the living room and watched the bathroom door to make sure Leonardo couldn’t surprise our little brother in case Master Splinter dismissed him before Michelangelo was done showering.\nI was sitting in the armchair while Raphael was by his punching bag to relieve some stress. Suddenly the sound of his fists hitting the bag stopped and I heard him walking over towards the living room area where I was. I hadn’t looked up since I thought he just wanted to sit down for a bit as well, so I kept my gaze on the bathroom door, sitting sideways in the armchair with my legs pulled up. I didn’t notice that Raphael had walked behind me and stood there until I felt his breath against the back of my neck as he sniffed me. This caused a shudder to run through my spine and as I turned my head to look up at Raphael he churred and grabbed the sides of my shell. The churr made me realize that Raphael was indeed in the same hormonal state Leonardo had first experienced the previous year, so I tried to get away from him before he could fully pin me down, but his grip on the edges of my carapace proved to be too strong, he just wouldn’t let go and growled at me as I struggled, baring his teeth in a warning matter.\nI automatically stopped squirming for just a moment at the warning, thus giving him the chance to move me. He lifted me up a bit and got around the corner of the armchair before pushing me down, positioning my body so that my plastron was pressed onto the seat of the armchair while my legs hung off of it so I was pretty much kneeling and bend over the armchair. I tried to straighten up to attempt another escape, but Raphael kept me down with one arm on my carapace and one hand on the back of my head, my face pressed against the cushions so that my pleas for him to snap out of it and let go were too muffled for even myself to understand.\nHe leaned down, lying down on top of my shell and sniffing my neck again before giving it a lick. The hand on the back of my head stayed in place and prevented me from turning my head to the side to call out for help, the cushions of the armchair muffling my cries too much to let my voice actually alert anyone. Raphael’s other arm reached down between my legs and caused my body to jerk in surprise as he grabbed and squeezed my tail between two fingers. He tugged and rubbed at it until it moved out of the way on its own account and I moaned involuntarily as he kept stroking and tugging my tail for a bit longer, the stimulation naturally arousing. Still I had not been even nearly aroused enough to accept the situation and willingly let another one of my brothers have intercourse with me just because their instincts told them to try and breed even though there was no female of our kind around. I squirmed again and whimpered to try and tell Raphael without words that I didn’t want this, hoping his animalistic state of mind would realize forcing himself onto another male wouldn’t be worth the trouble. Raphael didn’t react the way I hoped though, instead he just growled and tightened his grip on my head and tail, causing me to hiss in pain and stop squirming, my tail feeling as though the small bones in the sensitive appendage would break any moment. When I didn’t try to squirm again, Raphael loosened his grip on me a little, still not giving me a chance to get free though.\nHe churred and bucked his hips against me while leaning down more again and nuzzling and licking the crook of my neck. Then he bit onto the rim of my shell and let go of my tail before pressing the tip of his penis against the ring of muscles at my cloaca. He ignored the fact that the tense muscles wouldn’t give way and let him enter me and just kept pushing harder with a growl. I whimpered again in pain as he forced himself against my entrance, slowly succeeding in pushing in despite the resistance. Raphael grunted, giving a particularly hard shove and managing to push halfway in, causing me to cry out in pain against the cushions. I whimpered as he churred and gave another harsh shove, hilting himself deep inside me.\nHe stayed buried to the hilt for a moment while focusing on nibbling and biting at the back and side of my neck until my rectum adjusted and relaxed a little, still being very tight around his big member though.\nHe started to pull out, going until only the tip was still inside before thrusting forward in one jerky motion, causing me to yelp against the cushions as he hit my prostrate so suddenly. Without hesitation he pulled out to the tip again and thrust back in, hitting my prostrate again. He repeated this over and over, causing my body to jerk every time he pound against the sensitive cluster of nerves inside me and drawing yelps and moans from me.\nRaphael churred as his pacing increased, thrusting faster and also seemingly harder even though it didn’t seem possible that his pounding could get even harder. He managed to strike my prostrate with each and every thrust, even as his thrusting became frantic after some time.\nHe let out a long churr as his frantic thrusts got as quick as possible, the churr drowning out my muffled whimpering completely. While keeping up his quick-paced rough pounding he again nibbled and bit along my shoulders and neck, biting harder than before, hard enough to leave marks, but not enough to break skin.\nWith a grunt he bit onto the rim of my shell again and thrust even deeper than before, still keeping up his frantic pace as he came. I could feel his hot sperm shoot into me while he pounded out his release and even while he filled me with his seed his thick, throbbing cock kept colliding with the sensitive bundle of nerves. This would have probably stimulated my body enough to drop down, if it hadn’t been for the roughness that made the pain overpower the arousal. When he was finally done spending his load his thrusts slowed down and eased up, not striking my sore prostate anymore. Even though he was done I could feel that he was still thick and erect inside me, though it started to soften a moment later and soon he was soft enough to pull out without causing further harm. He let go of my shell and head with a satisfied sigh as he was finished and churred once more before sliding backwards and letting his flaccid penis slip out of me.\nI turned my head to the side since I was finally able to do so and panted in exhaustion and pain while watching Raphael get up and make his way over to the couch where he flopped down and leaned back with closed eyes and a smile. He had seemed more relaxed and happier than I had ever seen him before. I just worried how drastically that would change as soon as his consciousness took over again, saw me and realized what he had done, so I pushed myself up and sat down in the armchair again as soon as I could, hissing in pain and sitting down carefully since my gluteus and prostrate and anything in between was awfully sore.\nI kept my eyes on Raphael until hearing the bathroom door open as Mikey came back from showering. Raphael looked over towards the bathroom, he seemed a little surprised and said something about Mikey having been quick, so I’m sure he had blacked out when his instincts took over, the same issue as with Leonardo (and to be honest, I’m thankful for that, it’s sparing me of some awkward moments that would be sure to happen if my brothers knew they had forced me into intercourse with them).\nI heard Mikey mention we (or rather I) looked pretty spent and that he asked why that was. I hadn’t answered him, instead I just excused myself to the shower and hurried over into the bathroom, locking the door behind me and collapsing. My behind hurt so bad, I was sure Raphael and Michelangelo noticed me walking strangely while I hurried to the bathroom. When I could get myself to get up again I got over to the tub and prepared myself a hot bath to let it sooth my aching muscles and nerves.\nLater I avoided any questions about what had happened and soon they seemed to have forgotten all about it anyway.\nI also approached Master Splinter about Raphael, only telling him that I observed the same symptoms Leonardo was having in Raphael’s behavior, not that he had actually forced himself onto me. Ever since then Splinter took to watch over both Leonardo and Raphael and train them to keep their instincts under control.\n\nConclusion:\n- very dominating\n- seems to favor ‘doggy-style’\n- loves to bite (doesn’t hold on with his teeth like Leonardo does though; leaves more marks than Leo, though none as deep)\n- goes rough very soon (sore prostate)\n-> Feral\n\nMichelangelo:\n\n18 years, mating season.\nI expected this year to be my own first mature mating season, but even after one week of monitoring myself and running tests on my blood and urine to check for any hormonal misbalance, there was nothing out of the ordinary, for mating season that is.\nMaster Splinter kept watch over Leonardo and Raphael again to make sure they wouldn’t lose control while Michelangelo and I stayed together with the warning to watch each other closely and come to Master Splinter as soon as there were any signs of one of us maturing the way our two older brothers had.\nDue to the tests I was constantly running to keep checking on my own state, Michelangelo and me spent most of the time in my lab.\n\nI hadn’t expected Michelangelo to mature before I did so as I focused on my own state I missed the warning signs of Michelangelo maturing. I never realized that he was too quiet or that he was watching me instead of reading the comics he had brought into my lab or even that he would walk over to me occasionally and take in my scent.\nIt wasn’t until the day I heard him churr right by my ear that I noticed the red flags. I jumped up from my chair immediately and turned around to face Michelangelo while moving along my desk to try and get some space between the two of us.\nMichelangelo was faster than me though, so before I could get to the door of my lab or even away from my desk he jumped at me and wrapped his arms around my neck in a hug before churring at me again with a smile. It wasn’t his usual smile though, it was hard to describe, it was like he was high on the hormones that made him like this.\nI tried to push him away, but as I pushed against his plastron his arms moved down from around my neck to around my middle and held on tightly while he whined in protest at my attempt to push him away. I tried to tell him to let go, hoping he wasn’t too far gone into this state yet to hear and realize what I’m saying, but it fell to deaf ears, as expected.\nMichelangelo tightened his hold around me and got closer so that we were plastron-to-plastron before leaning up and sniffing and nuzzling my neck with a churr. I grabbed his shoulders and tried again to push him off me, but it was as though his arms were locked around me.\nHe started to nibble at my skin and lifted a leg to rub his thigh against my tail, churring again as he felt me shudder. I squirmed and kept trying to push him away or struggle out of his tight hug somehow, but nothing worked. When I tried to call out for Master Splinter, Michelangelo’s mouth flew to mine and shut me up with a kiss. I whimpered and tried to turn away but he’d always follow, or at least until I was too out of breath from the kiss to call out when it broke.\n\nThis supports a major theory I had developed over time about my brothers’ mating behavior: Even though their consciousness seems to be shut off during these moments and they hardly react to outside non-sexual stimuli, they can still think in some way and make decisions, in this case the decisions are to ensure their breeding attempts are not interrupted by anyone, that is why their instincts took over whenever one of them was alone with me, why they made sure I couldn’t get away before they started and why Raphael and now Michelangelo prevented me from calling out, Leonardo on the other hand was an exception in two cases: 1. His first attempt at mating was while we all were in the same room, this might be because his and also the instincts of my other two brothers and probably also my own had to learn first that any witnesses would interfere and interrupt the attempt at intercourse and 2. He hadn’t muffled my cries in any way, so either Leonardo was just less thoughtful while mating or he had simply been sure that no one would hear us since everyone else had already been far asleep.\n\nI hardly noticed when my tail moved away from my opening due to the stimuli of Michelangelo’s thigh rubbing against it, nor did I notice when my brother had dropped down and started bucking against me. His churring had pulled me out of my thoughts and I glanced down to see him nibbling along the crook of my shoulder while I felt more than saw his phallus seek out my entrance. It bumped against pretty much everywhere around my crotch area and I felt something wet and sticky on my skin where it had touched me, this something, I soon realized, being pre-ejaculate from Michelangelo’s excitement.\nHe churred again as his tip found my hole and he started pushing against it. Even though it had earned me a bleeding cloaca when I had tried it with Raphael, I once again clenched shut in hopes Michelangelo wouldn’t be as persistent as Raphael had been and would rather give up than force himself in anyway. I was right that he wouldn’t force himself in, but he found another way to get what he wanted. Michelangelo licked up my neck and nibbled along my jawline before finding my mouth and kissing me again, it was a rough and long kiss, one that had me gasping for breath very soon and while my body was busy regaining my breath as soon as the kiss broke, my muscles relaxed enough for Michelangelo to push in.\nI grunted and pressed my eyes shut at the feeling of Michelangelo’s penis entering me. Other than our other two brothers though, Michelangelo didn’t hilt himself right away, instead he churred and began to move in and out at a relatively quick pace, leaning his upper body against me. He held a rhythm of quick yet short thrusts for a while, churring and licking and nibbling at me the whole time. A small moan escaped me as my body was stimulated even though Michelangelo had yet to touch my prostate or other especially sensitive spots.\nThe churring increased as Michelangelo’s already quick thrusts got even faster. With the speed the depth and force increased as well, Michelangelo’s cock thrusting deeper and harder into me proportionally to the speed. After some time it seemed as though his churring wouldn’t stop anymore while he kept licking and suckling on my neck and shoulders. He leaned against me more as well, pushing my shell against the edge of my desk and nearly bending me over its top. I had put my hands to the desks edge to prevent that to happen, afraid I would knock something off my desk if Michelangelo actually attempted to push me onto it.\nAnother kind of moan escaped me when Michelangelo’s pounding had become hard and deep enough to hit my prostate, the speed of his thrusting causing the bundle of nerves to feel as though it wasn’t getting a break, feeling like a button that was constantly being pushed (like when Michelangelo was flipping through the TV channels just for the heck of it). His nibbling and churring against my neck was interrupted only by his panting.\nA whine signaled the approach of Michelangelo’s climax before he clamped down against the side of my neck with a churr and attempted to shove in deeper, going as deep as possible with his still inhumanly quick thrusts. With a louder and longer churr he then came, his pounding becoming awfully unfocused and frantic while his seed was shooting into me and filling my rectum. I tensed and whimpered a little at the sensation, holding onto the edge of my desk tightly.\nWhen all of his sperm was spent, Michelangelo’s thrusting slowed down and finally stopped. He churred once more and licked and nuzzled the hickey he had caused on my neck since he had clamped down on it by sucking and not by biting onto me as Leonardo and Raphael had done. After a moment of Michelangelo not making a move to remove himself even though he had finished completely and was only leaning against me I tried to move and push him away, but he still held tightly, whining in protest at my shove and tightening his hug even more. He nuzzled my shoulder and churred lightly under his breath. I feared that he was keeping me in place because he might have still been horny and wanted to go for another round, but still I didn’t struggle, my mind telling me that the attempt to get free would be in vain anyway and might only aggravate the turtle currently dominating me, so I held still.\nFortunately Michelangelo didn’t seem to plan to mate with me again right away, he had only snuggled up to me for a few minutes before finally letting go of me and taking a few steps backwards, his flaccid penis slipping out of me and slowly retracting back into his tail. Then with a hardly audible churr he made his way back over to the cot where he had put all the comics, laying down on top of the cot and curling up. He seemed very happy and satisfied as he fell asleep with a smile plastered on his face.\nAfter making sure Michelangelo was really asleep I checked to see if Master Splinter and my two older brothers were still meditating before I went to the bathroom and took a hot shower. Later I put some gauze on the most noticeable hickey’s Michelangelo had left on my neck and shoulders and thought up some excuse about an accident with acid in my lab while Michelangelo had been sleeping to explain the gauze.\n\nI had waited until the next day before telling Master Splinter that Michelangelo had developed the same symptoms as Leonardo and Raphael. He decided to keep all of us together and under his watch during mating season from then on, training us in keeping our instincts under control (even though I still hadn’t experienced my own instincts acting up), watching over us to make sure none of us would lose control and try to get at one of their brothers and bringing us to bed every night, locking our doors from outside to protect us from each other during the night. It was very awkward to go through all of this with my brothers after what happened those three mating seasons and honestly, I was very nervous letting anyone of them anywhere near me while they were in that hormonal state, but I tried to hide my uncomfortable feelings from them as well as I could, not wanting anyone to find out that even one of them had forced themselves onto me at some point.\n\nConclusion:\n- clinging with a hug\n- churrs a lot\n- goes pretty quick (doesn’t finish any quicker than the others though)\n- loves to lick, kiss and suck (leaves hickey’s rather than bite-marks)\n- cuddly\n-> love-struck Puppy\n\n19 years, mating season:\n\nThis year’s season went pretty smooth.\nThere was no intercourse and I could actually be a little more relaxed around my brothers while Master Splinter watched over us and trained us together. The pain of the past few years was still there but dull, not nearly as fresh as it had been the previous year when I was included into training right after the incident with Michelangelo.\n\nI still didn’t mature.\nI started to doubt that I ever will. There could be many explanations as to why that could be: \n1. There’s the theory of a higher IQ leading to less instinctual development, meaning the smarter you are, the less of an animal you are, this would lead to a higher IQ giving you more control over your actions while also giving your more responsibility since you have to learn everything on your own and can’t depend on for example the survival instinct to keep you alive. \n2. I could somehow have inherited more human DNA than my brothers for some reason, leading to my sexual instincts not being bound to a specific season but rather to the right amount of stimulation, that means I don’t get horny when it’s “time to breed” but rather whenever I find something “suited for breeding” or “sexy” as people would put it.\nTo be honest, I hope my theories are true, no matter which one exactly, I just don’t want to fear to slip into the same hormonal state as my brothers and risk forcing myself onto them as they had with me.\n", "writing_bbcode_parsed": "Donatello’s Journal

Mating Season Notes:

Mating Season started to show its effect on the four of us around the age of 13. The symptoms consisted of uncontrollable erections and mood swings or aggression, all caused by hormonal misbalance, varying from individual to individual.

Leonardo:

It wasn’t until we were 16 years old that the animalistic instinct to breed surfaced. In spring (mating season) that year Leonardo had started acting unusual, even considering the time of the year.
Much like the random uncontrollable erections, Leonardo started having ‘horny’ moments. During these times, which increased in durance as the season progressed, his behavior changed drastically. He started stalking Raphael, Michelangelo and myself, following us around, watching and sniffing us without a word, from time to time producing a purr-like noise (churr) while doing so.

Leonardo’s first attempt at mating happened about a week into mating season, during practice. He had been sparring with Michelangelo while I sparred with Raphael and at some point he had Michelangelo pinned beneath him. Leonardo started by making a churr and sniffing Michelangelo’s neck, followed by a lick and then he had started bucking his hips. At this point Master Splinter had tried to tell Leonardo to get off our brother, but there was no reaction whatsoever. Raphael and I pulled him off of Michelangelo just as Leonardo had dropped down, his phallus already erect. He kept bucking in need and even attempted to turn onto either Raphael or me instead, but our grip on him was too strong at that time and only a few minutes later he had already returned to his normal state.
Leonardo stated his memory had been a blurr, he could not recall trying to mate Michelangelo or being restrained by Raphael and myself.
Master Splinter excused himself to meditate on this new situation afterwards to try and decide what would be the most appropriate reaction to this new issue of control loss. He hadn’t shown up again for the rest of the evening, he hadn’t been sure whether  he should do the drastic and make sure to keep Leonardo away from us until mating season had passed or whether he should just tell the three of us to stay together at all times until Leonardo’s state was no threat anymore.

His decision came too late though as that night Leonardo’s next ‘horny’ moment surfaced right after he had lead me from my lab to bed. He had just told me good night and turned to leave when I had heard him take a long sniff and churr.
I had already been lying in bed and covered by my blanket so even as I guessed what was going on my reaction had been too slow and I could not stop Leonardo from lying down on top of me. He had grabbed my wrists to pin me down and started sniffing and licking my neck while churring, just like he had done a few hours prior with Michelangelo. I tried to squirm free and get him off of me when he started to buck his hips, but his hold on me didn’t give me a chance to escape.
He churred again as he dropped down and started thrusting against my blanket. I noticed him pulling a face in discomfort at the contact of fabric against his erection instead of skin and he took one hand off my wrists to use a hand and his legs to slowly move the blanket down and out of the way. I had tried to push him off with my newly freed arm, but as I tried Leonardo leaned down more with all his weight and bit into my left shoulder, not letting go. His bite hadn’t drawn blood, it was only an instinctual act with the purpose to keep a chosen mate still, to make them stay in place and not try to squirm free.
With the blanket then out of the way, Leonardo moved both hands to hold my arms against my sides and he kept the grip he had on my shoulder with his teeth as he lowered himself and bucked against my back end. I could feel the tip of his penis rub against my tail which was curled up to cover my cloaca as it usually was.
Though the light friction was enough stimuli for my small appendage to uncurl and move out of the way on its own, much to my dismay as the next moment I felt the tip of Leonardo’s phallus press against the muscle ring of my opening. At that moment I had become desperate and began to call out, for help, for Leonardo to stop and snap out of his hormonal induced state, but my cries had fallen to deaf ears since Master Splinter and my other two brothers had already been fast asleep, too deep asleep to hear the calling coming from my room and Leonardo had the same response as he had had for Splinter earlier: None.
I cried out and tensed in pain as I felt the tip push inside. Leonardo only tightened his grip on me with his hands and teeth, churring before continuing to push. He entered me slowly, almost carefully, yet it still hurt, it had felt unnatural, as though Leonardo’s organ had never been meant to fit in there and now his big pulsating member was ripping open my insides. I whimpered while he kept pushing in deeper, churring and moaning as he hilted himself inside me.
He waited for a bit, deep inside me, his grip on me still very tight, tense until I started to relax slightly, adjusting to the size of his phallus slowly. As soon as he noticed my tension lift he began to pull out slowly until he was only halfway in, waited for a moment and then pushed in to the hilt again. He started slowly, in to the hilt and halfway out again for a while. I relaxed a little more, it still hurt a bit but at some point it also started to feel good in some way. I felt his teeth let go of my shoulder and he licked the bite as if trying to make it better or say sorry for hurting me, either way right after this non-verbal ‘sorry’ he lightly bit the side of my neck and churred again as he gave a hard thrust. I could not help but let out a small moan due to that particular shove striking and so stimulating the cluster of nerves inside me.
This time when he pulled out slowly, Leonardo went nearly all the way, so only his tip was still inside and then pushed back in, this being the new cycle, from hilt to tip and back. His pace had also increased and it kept increasing bit by bit with another hard shove every now and then. I whimpered as Leonardo bit hard enough on the side of my neck to leave a mark before licking it, then he moved on to the other side of my neck and just nuzzled me for a moment. Another especially hard thrust and Leonardo’s teeth clamped down again, this time in the crook between my neck and shoulder on the right side.
Soon Leonardo’s thrusting became faster and harder and he started to pant against my skin. His pace increased constantly until my bed started to creak in response beneath us. He churred again and grunted while giving a bunch of hard and deep thrusts.
I felt something warm spreading into me from where he pound into my rectum as he went as deep as possible and came, creating a long and almost cry-like moan while clamping down on my arms and shoulder much harder than before. It hurt, so I too cried out. I had lost my sense of time at some point when he had started to pound me so I don’t know how long his climax lasted, but it ended with one last very hard thrust, then he stayed deep inside, churred and shook for a moment as he spent the very last drops of his sperm and collapsed on top of me.
Then finally he let go of my shoulder, licking the wound which, other than the other bite-marks I had received from Leonardo, had started to bleed. His grip on my arms also loosened so that I would have had the chance to finally push him off, but I was too exhausted at the moment and so simply waited until he finished licking the bleeding bite-wound, pulled his flaccid phallus out of my cloaca and got up to leave.
I fell asleep from the exhaustion and light pain in my rectum and shoulders soon after Leonardo had left my room.

The next day Leonardo had acted like usual, though the effect mating season had on him seemed to have lifted a bit, he seemed more relaxed. He didn’t act strange towards me so I figured that his consciousness had blacked out as his instincts to mate had taken over the night before and so he could not remember what he had done to me.
I had treated the bites before breakfast as much as I could so they were hardly visible by the time I met up with my family, save for the one that had bled. I had covered it with some gauze and told the others I had rolled out of bed and landed on a screwdriver, injuring my shoulder. I lied to keep what Leonardo had done to me in his hormonal induced state a secret, deciding that would be for the better since no one besides me knew what happened anyway. Also Master Splinter had decided that from now on the three of us without Leonardo were to stay together the whole time during mating season so no one would have to fear to have to face a horny Leonardo on their own (kind of ironic, I might add here) and he asked us to lock our rooms when we went to bed.
This worked out very well for the rest of that years mating season, even as Leonardo’s state worsened again and the last few days it seemed as though he didn’t snap out of it at all.

Conclusion:
- very clingy; tight grip
- bites a lot and hard (leaves deep bite-marks, can eventually draw blood)
- starts slow and careful
-> Control Freak

Raphael:

17 years, mating season.
Leonardo acted just like the previous year, so Raphael, Michelangelo and I took on the strategy we had developed in response to Leonardo’s mating instincts. It worked very well and we went about one and a half weeks into mating season without any incidents.
I had noticed Raphael acting kind of odd this year as well, though he didn’t seem to change as drastically as Leonardo had the year before, that is why I had not thought much of it as Raphael became quieter than usual, started to watch Michelangelo and me closer and even began to sniff us from time to time.

I regretted not being more careful about these warning signals one time, while Leonardo had been in the dojo with Master Splinter to meditate and try to keep his instincts under control and while Michelangelo had been in the bathroom to take a shower. Raphael and I waited together in the living room and watched the bathroom door to make sure Leonardo couldn’t surprise our little brother in case Master Splinter dismissed him before Michelangelo was done showering.
I was sitting in the armchair while Raphael was by his punching bag to relieve some stress. Suddenly the sound of his fists hitting the bag stopped and I heard him walking over towards the living room area where I was. I hadn’t looked up since I thought he just wanted to sit down for a bit as well, so I kept my gaze on the bathroom door, sitting sideways in the armchair with my legs pulled up. I didn’t notice that Raphael had walked behind me and stood there until I felt his breath against the back of my neck as he sniffed me. This caused a shudder to run through my spine and as I turned my head to look up at Raphael he churred and grabbed the sides of my shell. The churr made me realize that Raphael was indeed in the same hormonal state Leonardo had first experienced the previous year, so I tried to get away from him before he could fully pin me down, but his grip on the edges of my carapace proved to be too strong, he just wouldn’t let go and growled at me as I struggled, baring his teeth in a warning matter.
I automatically stopped squirming for just a moment at the warning, thus giving him the chance to move me. He lifted me up a bit and got around the corner of the armchair before pushing me down, positioning my body so that my plastron was pressed onto the seat of the armchair while my legs hung off of it so I was pretty much kneeling and bend over the armchair. I tried to straighten up to attempt another escape, but Raphael kept me down with one arm on my carapace and one hand on the back of my head, my face pressed against the cushions so that my pleas for him to snap out of it and let go were too muffled for even myself to understand.
He leaned down, lying down on top of my shell and sniffing my neck again before giving it a lick. The hand on the back of my head stayed in place and prevented me from turning my head to the side to call out for help, the cushions of the armchair muffling my cries too much to let my voice actually alert anyone. Raphael’s other arm reached down between my legs and caused my body to jerk in surprise as he grabbed and squeezed my tail between two fingers. He tugged and rubbed at it until it moved out of the way on its own account and I moaned involuntarily as he kept stroking and tugging my tail for a bit longer, the stimulation naturally arousing. Still I had not been even nearly aroused enough to accept the situation and willingly let another one of my brothers have intercourse with me just because their instincts told them to try and breed even though there was no female of our kind around. I squirmed again and whimpered to try and tell Raphael without words that I didn’t want this, hoping his animalistic state of mind would realize forcing himself onto another male wouldn’t be worth the trouble. Raphael didn’t react the way I hoped though, instead he just growled and tightened his grip on my head and tail, causing me to hiss in pain and stop squirming, my tail feeling as though the small bones in the sensitive appendage would break any moment. When I didn’t try to squirm again, Raphael loosened his grip on me a little, still not giving me a chance to get free though.
He churred and bucked his hips against me while leaning down more again and nuzzling and licking the crook of my neck. Then he bit onto the rim of my shell and let go of my tail before pressing the tip of his penis against the ring of muscles at my cloaca. He ignored the fact that the tense muscles wouldn’t give way and let him enter me and just kept pushing harder with a growl. I whimpered again in pain as he forced himself against my entrance, slowly succeeding in pushing in despite the resistance. Raphael grunted, giving a particularly hard shove and managing to push halfway in, causing me to cry out in pain against the cushions. I whimpered as he churred and gave another harsh shove, hilting himself deep inside me.
He stayed buried to the hilt for a moment while focusing on nibbling and biting at the back and side of my neck until my rectum adjusted and relaxed a little, still being very tight around his big member though.
He started to pull out, going until only the tip was still inside before thrusting forward in one jerky motion, causing me to yelp against the cushions as he hit my prostrate so suddenly. Without hesitation he pulled out to the tip again and thrust back in, hitting my prostrate again. He repeated this over and over, causing my body to jerk every time he pound against the sensitive cluster of nerves inside me and drawing yelps and moans from me.
Raphael churred as his pacing increased, thrusting faster and also seemingly harder even though it didn’t seem possible that his pounding could get even harder. He managed to strike my prostrate with each and every thrust, even as his thrusting became frantic after some time.
He let out a long churr as his frantic thrusts got as quick as possible, the churr drowning out my muffled whimpering completely. While keeping up his quick-paced rough pounding he again nibbled and bit along my shoulders and neck, biting harder than before, hard enough to leave marks, but not enough to break skin.
With a grunt he bit onto the rim of my shell again and thrust even deeper than before, still keeping up his frantic pace as he came. I could feel his hot sperm shoot into me while he pounded out his release and even while he filled me with his seed his thick, throbbing cock kept colliding with the sensitive bundle of nerves. This would have probably stimulated my body enough to drop down, if it hadn’t been for the roughness that made the pain overpower the arousal. When he was finally done spending his load his thrusts slowed down and eased up, not striking my sore prostate anymore. Even though he was done I could feel that he was still thick and erect inside me, though it started to soften a moment later and soon he was soft enough to pull out without causing further harm. He let go of my shell and head with a satisfied sigh as he was finished and churred once more before sliding backwards and letting his flaccid penis slip out of me.
I turned my head to the side since I was finally able to do so and panted in exhaustion and pain while watching Raphael get up and make his way over to the couch where he flopped down and leaned back with closed eyes and a smile. He had seemed more relaxed and happier than I had ever seen him before. I just worried how drastically that would change as soon as his consciousness took over again, saw me and realized what he had done, so I pushed myself up and sat down in the armchair again as soon as I could, hissing in pain and sitting down carefully since my gluteus and prostrate and anything in between was awfully sore.
I kept my eyes on Raphael until hearing the bathroom door open as Mikey came back from showering. Raphael looked over towards the bathroom, he seemed a little surprised and said something about Mikey having been quick, so I’m sure he had blacked out when his instincts took over, the same issue as with Leonardo (and to be honest, I’m thankful for that, it’s sparing me of some awkward moments that would be sure to happen if my brothers knew they had forced me into intercourse with them).
I heard Mikey mention we (or rather I) looked pretty spent and that he asked why that was. I hadn’t answered him, instead I just excused myself to the shower and hurried over into the bathroom, locking the door behind me and collapsing. My behind hurt so bad, I was sure Raphael and Michelangelo noticed me walking strangely while I hurried to the bathroom. When I could get myself to get up again I got over to the tub and prepared myself a hot bath to let it sooth my aching muscles and nerves.
Later I avoided any questions about what had happened and soon they seemed to have forgotten all about it anyway.
I also approached Master Splinter about Raphael, only telling him that I observed the same symptoms Leonardo was having in Raphael’s behavior, not that he had actually forced himself onto me. Ever since then Splinter took to watch over both Leonardo and Raphael and train them to keep their instincts under control.

Conclusion:
- very dominating
- seems to favor ‘doggy-style’
- loves to bite (doesn’t hold on with his teeth like Leonardo does though; leaves more marks than Leo, though none as deep)
- goes rough very soon (sore prostate)
-> Feral

Michelangelo:

18 years, mating season.
I expected this year to be my own first mature mating season, but even after one week of monitoring myself and running tests on my blood and urine to check for any hormonal misbalance, there was nothing out of the ordinary, for mating season that is.
Master Splinter kept watch over Leonardo and Raphael again to make sure they wouldn’t lose control while Michelangelo and I stayed together with the warning to watch each other closely and come to Master Splinter as soon as there were any signs of one of us maturing the way our two older brothers had.
Due to the tests I was constantly running to keep checking on my own state, Michelangelo and me spent most of the time in my lab.

I hadn’t expected Michelangelo to mature before I did so as I focused on my own state I missed the warning signs of Michelangelo maturing. I never realized that he was too quiet or that he was watching me instead of reading the comics he had brought into my lab or even that he would walk over to me occasionally and take in my scent.
It wasn’t until the day I heard him churr right by my ear that I noticed the red flags. I jumped up from my chair immediately and turned around to face Michelangelo while moving along my desk to try and get some space between the two of us.
Michelangelo was faster than me though, so before I could get to the door of my lab or even away from my desk he jumped at me and wrapped his arms around my neck in a hug before churring at me again with a smile. It wasn’t his usual smile though, it was hard to describe, it was like he was high on the hormones that made him like this.
I tried to push him away, but as I pushed against his plastron his arms moved down from around my neck to around my middle and held on tightly while he whined in protest at my attempt to push him away. I tried to tell him to let go, hoping he wasn’t too far gone into this state yet to hear and realize what I’m saying, but it fell to deaf ears, as expected.
Michelangelo tightened his hold around me and got closer so that we were plastron-to-plastron before leaning up and sniffing and nuzzling my neck with a churr. I grabbed his shoulders and tried again to push him off me, but it was as though his arms were locked around me.
He started to nibble at my skin and lifted a leg to rub his thigh against my tail, churring again as he felt me shudder. I squirmed and kept trying to push him away or struggle out of his tight hug somehow, but nothing worked. When I tried to call out for Master Splinter, Michelangelo’s mouth flew to mine and shut me up with a kiss. I whimpered and tried to turn away but he’d always follow, or at least until I was too out of breath from the kiss to call out when it broke.

This supports a major theory I had developed over time about my brothers’ mating behavior: Even though their consciousness seems to be shut off during these moments and they hardly react to outside non-sexual stimuli, they can still think in some way and make decisions, in this case the decisions are to ensure their breeding attempts are not interrupted by anyone, that is why their instincts took over whenever one of them was alone with me, why they made sure I couldn’t get away before they started and why Raphael and now Michelangelo prevented me from calling out, Leonardo on the other hand was an exception in two cases:  1. His first attempt at mating was while we all were in the same room, this might be because his and also the instincts of my other two brothers and probably also my own had to learn first that any witnesses would interfere and interrupt the attempt at intercourse and 2. He hadn’t muffled my cries in any way, so either Leonardo was just less thoughtful while mating or he had simply been sure that no one would hear us since everyone else had already been far asleep.

I hardly noticed when my tail moved away from my opening due to the stimuli of Michelangelo’s thigh rubbing against it, nor did I notice when my brother had dropped down and started bucking against me. His churring had pulled me out of my thoughts and I glanced down to see him nibbling along the crook of my shoulder while I felt more than saw his phallus seek out my entrance. It bumped against pretty much everywhere around my crotch area and I felt something wet and sticky on my skin where it had touched me, this something, I soon realized, being pre-ejaculate from Michelangelo’s excitement.
He churred again as his tip found my hole and he started pushing against it. Even though it had earned me a bleeding cloaca when I had tried it with Raphael, I once again clenched shut in hopes Michelangelo wouldn’t be as persistent as Raphael had been and would rather give up than force himself in anyway. I was right that he wouldn’t force himself in, but he found another way to get what he wanted. Michelangelo licked up my neck and nibbled along my jawline before finding my mouth and kissing me again, it was a rough and long kiss, one that had me gasping for breath very soon and while my body was busy regaining my breath as soon as the kiss broke, my muscles relaxed enough for Michelangelo to push in.
I grunted and pressed my eyes shut at the feeling of Michelangelo’s penis entering me. Other than our other two brothers though, Michelangelo didn’t hilt himself right away, instead he churred and began to move in and out at a relatively quick pace, leaning his upper body against me. He held a rhythm of quick yet short thrusts for a while, churring and licking and nibbling at me the whole time. A small moan escaped me as my body was stimulated even though Michelangelo had yet to touch my prostate or other especially sensitive spots.
The churring increased as Michelangelo’s already quick thrusts got even faster. With the speed the depth and force increased as well, Michelangelo’s cock thrusting deeper and harder into me proportionally to the speed. After some time it seemed as though his churring wouldn’t stop anymore while he kept licking and suckling on my neck and shoulders. He leaned against me more as well, pushing my shell against the edge of my desk and nearly bending me over its top. I had put my hands to the desks edge to prevent that to happen, afraid I would knock something off my desk if Michelangelo actually attempted to push me onto it.
Another kind of moan escaped me when Michelangelo’s pounding had become hard and deep enough to hit my prostate, the speed of his thrusting causing the bundle of nerves to feel as though it wasn’t getting a break, feeling like a button that was constantly being pushed (like when Michelangelo was flipping through the TV channels just for the heck of it). His nibbling and churring against my neck was interrupted only by his panting.
A whine signaled the approach of Michelangelo’s climax before he clamped down against the side of my neck with a churr and attempted to shove in deeper, going as deep as possible with his still inhumanly quick thrusts. With a louder and longer churr he then came, his pounding becoming awfully unfocused and frantic while his seed was shooting into me and filling my rectum. I tensed and whimpered a little at the sensation, holding onto the edge of my desk tightly.
When all of his sperm was spent, Michelangelo’s thrusting slowed down and finally stopped. He churred once more and licked and nuzzled the hickey he had caused on my neck since he had clamped down on it by sucking and not by biting onto me as Leonardo and Raphael had done. After a moment of Michelangelo not making a move to remove himself even though he had finished completely and was only leaning against me I tried to move and push him away, but he still held tightly, whining in protest at my shove and tightening his hug even more. He nuzzled my shoulder and churred lightly under his breath. I feared that he was keeping me in place because he might have still been horny and wanted to go for another round, but still I didn’t struggle, my mind telling me that the attempt to get free would be in vain anyway and might only aggravate the turtle currently dominating me, so I held still.
Fortunately Michelangelo didn’t seem to plan to mate with me again right away, he had only snuggled up to me for a few minutes before finally letting go of me and taking a few steps backwards, his flaccid penis slipping out of me and slowly retracting back into his tail. Then with a hardly audible churr he made his way back over to the cot where he had put all the comics, laying down on top of the cot and curling up. He seemed very happy and satisfied as he fell asleep with a smile plastered on his face.
After making sure Michelangelo was really asleep I checked to see if Master Splinter and my two older brothers were still meditating before I went to the bathroom and took a hot shower. Later I put some gauze on the most noticeable hickey’s Michelangelo had left on my neck and shoulders and thought up some excuse about an accident with acid in my lab while Michelangelo had been sleeping to explain the gauze.

I had waited until the next day before telling Master Splinter that Michelangelo had developed the same symptoms as Leonardo and Raphael. He decided to keep all of us together and under his watch during mating season from then on, training us in keeping our instincts under control (even though I still hadn’t experienced my own instincts acting up), watching over us to make sure none of us would lose control and try to get at one of their brothers and bringing us to bed every night, locking our doors from outside to protect us from each other during the night. It was very awkward to go through all of this with my brothers after what happened those three mating seasons and honestly, I was very nervous letting anyone of them anywhere near me while they were in that hormonal state, but I tried to hide my uncomfortable feelings from them as well as I could, not wanting anyone to find out that even one of them had forced themselves onto me at some point.

Conclusion:
- clinging with a hug
- churrs a lot
- goes pretty quick (doesn’t finish any quicker than the others though)
- loves to lick, kiss and suck (leaves hickey’s rather than bite-marks)
- cuddly
-> love-struck Puppy

19 years, mating season:

This year’s season went pretty smooth.
There was no intercourse and I could actually be a little more relaxed around my brothers while Master Splinter watched over us and trained us together. The pain of the past few years was still there but dull, not nearly as fresh as it had been the previous year when I was included into training right after the incident with Michelangelo.

I still didn’t mature.
I started to doubt that I ever will. There could be many explanations as to why that could be:
1. There’s the theory of a higher IQ leading to less instinctual development, meaning the smarter you are, the less of an animal you are, this would lead to a higher IQ giving you more control over your actions while also giving your more responsibility since you have to learn everything on your own and can’t depend on for example the survival instinct to keep you alive.
2. I could somehow have inherited more human DNA than my brothers for some reason, leading to my sexual instincts not being bound to a specific season but rather to the right amount of stimulation, that means I don’t get horny when it’s “time to breed” but rather whenever I find something “suited for breeding” or “sexy” as people would put it.
To be honest, I hope my theories are true, no matter which one exactly, I just don’t want to fear to slip into the same hormonal state as my brothers and risk forcing myself onto them as they had with me.
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