For Rmaster

Okay, this was it. He'd finally gathered up enough courage for it. James carefully popped the lid of the pill bottle, his paw shaking slightly. If he was caught.. no. He wouldn't be. There's no way she'd find out..
He carefully took out 2 of the pills, before putting the lid back on and hiding the bottle in the medicine cabinet. Then, he crushed them in his paw, and poured the remains into the glass of water. Quickly grabbing a spoon, he whirled the water around, making sure that the pill dust was no longer visible. The water didn't even change colour, the pills he got really were invisible in water. Hopefully their effects weren't overstated either. 
The instructions on the bottle said to only take one to make you fall into a deep slumber. He was risking it by putting two in. Although if they worked, his sister wouldn't wake up no matter how hard he pushed her tonight. God, he couldn't wait. His mind hadn't stopped thinking about that night a week ago. It was the most arousing experience he had ever done.. and so he kept it up. Every night since then, he had snuck into his sisters room to use her for his pleasures. And she didn't wake up, not once!
But he wanted more. And he was sure, if he tried it, she'd wake up. And he didn't want to lose his new favourite toy. So, he managed to acquire a bottle of extra-strength sleeping pills. He knew some guys, who managed to get him what he wanted off of a shady dark-web site. These weren't regular prescription pills. 
He quickly composed himself. His cock was already straining his shorts, likely very noticable. Hopefully, his sister was young enough not to realise what the large outline in his shorts was exactly..
He grabbed the glass in his paw, and walked as calm as he could into the living room. His sister was sprawled out on the couch, watching TV. Some teen show with some famous child-actresses. He actually didn't mind this show, as the producers or costume designers or whoever made sure that the show was.. good for male audiences.
 He really enjoyed the show actually, as the girls are always clad in such arousing attire. Super short skirts were common, and basically anytime the girls moved, there was a flash of their panties. And, the directors made sure to make them bend over very frequently. And the camera crew definitely knew what to focus on..
James couldn't help himself, a lot of the time he'd look up the show on his computer and go to town with it. The show had hundreds of episodes, all of them pure spankbank material. Swimming episodes were very popular, and the girl cast were given such tight, sexy swimsuits. He really wished that the channel they were hosted on allowed nudity, as he was sure the show would just become a porno disguised as a kids show. Although, at its current state, it already was a porno, just without nudity. That certainly didn't stop the cameras getting thousands of hours worth of great footage.. the camel toes being plentiful. 
Just as he was thinking about the comments he'd left on many video sharing sites that hosted the show, a voice called out. "James? Are you okay?". He'd been standing there, thinking and getting horny over this kids show, water in his paw. He quickly snapped back to reality to focus on his main mission.
"Oh, I'm sorry sis. Here, I got you a glass of water, I'm sure your thirsty. Make sure to drink up!" He handed over the glass to his sister, his bulge throbbing hard, but thankfully she didn't seem to notice. He was nervous. What if she didn't drink it? What if she did, but noticed it tasted funny? He tried to act cool, but couldn't help watching her.
She glanced at the water in his paw, before taking it and gulping it down fast. She was very thirsty. She downed the glass in record time, setting it down on the floor. She licked her lips slightly. "That tasted really good Jamie, thank you." 
James cringed at the nickname, but kept his cool. "Well it was just a glass of water, nothing special. Mind if I watch with you?" He asked, gesturing towards the TV. His sister looked at him in surprise. "Why would you be interested in a kids show? Isn't it too young for you?" she asked him. He shrugged. "Well It's still good.." he said, trailing off. She shrugged back, and he sat down. 
He did his best to focus on the TV. He had no idea how long it would take for the pills to kick in. He tried not to check on her too much, thankfully the show was always a good distraction. The storyline on todays episode was something about the young girl cast heading to their public pool again, getting many great views with them in swimsuits. He could already imagine the amount of comments perving on them on the internet..
A lot of the background characters were girls too, but James spotted a couple guys among them. They were rocking massive hard ons, very obvious in the flimsy swimming shorts they wore. They also seemed to be having a great time, and he counted numerous ass slaps and gropes as the show went on. It culminated with one of the lead characters going into the wrong changing room. As the rest waited and wondered where she went, she eventually stumbled out of the swimming complex, absolutely covered in cum.
Then the credits rolled. Another cliffhanger ending. Since the show was targeted for young girls and early teens, roughly 8 - 14, the directors could get away with things like that. After all, the intended viewing audience wasn't supposed to know what cum was, so the hosting channel allowed it. He presumed the girl got gangbanged, or gangraped, off-set to get all that spunk over her.
"Woah, I wonder what that was? I've had that stuff on me when I wake up in the morning.." came his sisters voice. She definitely sounded sleepy now. James looked over at her. "Oh it's nothing.. just natural stuff." He said. He hoped she wouldn't continue to ask questions.
"Oh.. okay. I'm so tired.." she replied back. "Well, go to sleep then silly." He shot back. She glared at him, before nodding. "Okay, fine.." She yawned hard, her tail flicking slightly. Then she got up, before trudging her way up the stairs. James listened to the sound of her flopping into her bed. The time was coming! His plan was working!
He decided to burn two or so hours, just to make sure she was fully asleep. And would remain that way. He had the entire evening, and night with her. Maybe the morning too, depends when the effects wore off. He loaded up a game, Days Gone, and played for a while. Then, he glanced at his watch, turned the game off, and slowly creeped upstairs.
His heart was pounding, and his cock was screaming to be let free. It was so hard, and he needed to unload his churning balls. He was anxious too, but he hoped that since everything had gone well so far, that it would continue to. He came to his sisters room, and dropped his shorts. His fat, throbbing cock was finally free. His balls were full of spunk, and they twitched with every throb of his red rocket. 
He eased her door open a little more, as she hadn't closed it entirely. He crept slowly into her room, laying down his paws carefully so as not to make the floor creak. He saw her, laying on her bed. Asleep. He stealthily made his way to her side, before whispering.
"Connie.. Connie are you awake?"
He nudged her head. Shook her shoulders slightly. Pulled off her skirt. Nothing. She was completely out of it. He couldn't contain himself anymore, and he quickly yanked down her panties, freeing her pussy to him. He rammed his snout between her legs, smelling her sweet pussy scent, which just drove him wilder. He started licking, hard and fast between her legs, smooshing her pussy lips up and down with every stroke of his tongue. His cock throbbed harder, and he almost came right there. He was so horny. But he managed to stop just enough, as he wanted to unload inside her. That was his goal. He never fucked her pussy before, at any night, but now was his chance and he would not miss it.
He slid her legs across her bed, making her lay sideways, her legs dangling off the edge. Then, he quickly opening them up, and started rubbing his tip on her pussy. Oh god it was sooo good...
He hesitated, but started slowly pushing in. He went further than he had ever before, and decided to speed up. Then, he hit a barrier, which quickly broke. Shit. He forgot, she was still a virgin..
But there was no reaction. He knew that losing your virginity as a girl hurt a bit, but even with that, the pills still kept her under. They were good. He quickly resumed pushing his way inside her. He got up to his knot, before deciding that he wouldn't push that in just yet. She was so tight.. so warm inside. It felt utterly incredible. He managed to do a couple thrusts before he couldn't hold back anymore, and his balls unleashed his first load. Her womb quickly filled up with her brothers warm seed, as his balls twitched and ached to get it all out. He couldn't help but moan out, as the pleasure was like nothing he'd ever experienced before. He thought that he'd hit the wall with how good pleasure had felt over the last couple nights but this was so much better.
After a minute or so of non-stop cumming, he finally stopped. He was still completely rock solid. Thank god he was able to produce a lot, otherwise his fun might have been cut short before he'd even began.
He resumed thrusting, in and out, slow at first. He wouldn't be able to describe the feeling if he tried, it was just perfect. His sister felt so good, so perfect, like she was made to take his cock. He planted his paws on her legs, and thrust forward hard. A loud slap echoed about the room. He did it again. And again. His thrusting became hard, and random, with no rythm. After a little, he found a groove, and his tip punished her womb with every thrust. He pounded his sisters young, tight little pussy, and could already feel another orgasm building. This time, he was going to push the knot in.
He pushed forward. And pushed more. Slowly, her pussy started stretching to take his knot. It felt so wonderful, so incredible. Finally he got it in, and the pleasure immediatly brought him to orgasm. More warm, fertile cum flooded into her pussy, filling her womb with fresh cum, already full of his first load. He didn't think about the potential consequences of filling his sisters young womb with his cum. He just did it. His balls produced more and more, until they ran dry again.
He pushed her back onto the bed, completely, before climbing on top of her. There, he used to his weight to thrust downwards hard. He fucked her senseless, if she was able to sense anything. Her bed bounced and creaked with every thrust, his balls hitting her hard each time. He kept it up until he came again, more cum flooding her. He pulled out slightly at the end, and a large spurt covered her front.
That night was like no other. No matter what he did to her, the pills kept her deeply asleep. James tried many positions. He pounded her with utter wild ferocity. Her bed creaked and squeaked with every thrust, the noise easily audible throughout the entire house. Thank god his parents were away for a while, some business thing.
He tried missionary. Cowgirl. Doggystyle. Positions he didn't know the names of. He unloaded so much cum into her throughout the night. Her pussy got the brunt of it, but her mouth and body took its fair share too. He used his sister like the breedable fucktoy she was to him. His balls managed to keep up production throughout the night, hours upon hours of pure breeding. 
He fucked her beyond belief. The slaps echoed loudly in his ears everytime he made contact with her. Her pussy was stretched and punished by his cock, her womb filled beyond its limit with his cum. He spanked her fat, juicy ass all night. He groped it hard, squeezing and massaging the flesh. He shoved his cock down her throat and forced her to drink it all. He was so horny, and continued all night long.
Hours went by. Then more hours. Finally, he did one final breeding session. He had her bent over her bed, his cock sliding easily inside her pussy now. The combination of brutal fucking and the amount of cum inside her made it much easier to thrust inside her this time. She was still incredibly tight though. He spanked her ass, loving the jiggle it caused, as he bent over with pleasure as his final load came. He pushed in hard, knot and all, the tip of his cock penetrating his womb as he came. His last flood of cum pushed her womb to even further limits. He pulled out, and more dribbled out of her wrecked pussy. 
By the end of it, she was completely soaked in cum. Her womb had taken dozens of fresh, fertile loads. Her belly had swollen from the sheer amount of it. And her bed was coated in fresh cum, along with all of her clothes. James had used her panties and skirts and swimsuits to try and wipe some of the cum off the floor. Then he put them back, sodden with his seed, before kissing her goodnight and collapsing onto his own bed.
And he couldn't wait for tomorrow night.
___________________________________________________________________________
A week or so later, the pills had finally run out. James had used them every night, and used her every night too. He couldn't begin to count the amount of loads he'd pumped into her. It must have been into the hundreds, surely. He tried as many positions he could think of. He looked up more positions on the web. If there was a position to have sex, James had found it in his week from heaven.
His balls ached, but they still kept producing more. He really put his cock through a lot, but, he was sure it had grown slightly. Maybe the non-stop pounding had actually improved his length and girth. He was sure his balls had changed, they seemed to be much larger than before. Probably from the amount of cum he had to unleash every night into, and onto, his sister. 
He took videos and pictures of her, and comparing the before and after shots made him so horny he almost decided to fuck her while she was awake. Or brutally rape would be more apt of a description. Luckily he managed to abstain by jerking to the hundreds of other pictures and videos of her. Some of which he posted online, which quickly got very popular.
She was none the wiser at all to his night time antics. Of course, there's no way she couldn't notice the fact that her and her clothes were sodden with cum. But when she asked him, he brushed it off and engineered some excuse of it being natural, which she bought. He was so glad she was so oblivious. 
He had just gone to the corner shop for some extra juice. There, he saw one of his friends, one who had managed to supply him with the pills. He smirked, and his friend noticed.
"Hey dude! Guess you used up those pills huh? Whoever the lucky girl was, I hope you used protection. I forgot to mention, but as well as causing deep sleep, they raise the fertility of the subject by a lot. And I mean a LOT. Like so much that even a single drop of pre-cum will probably get them pregnant. Anyway, you want some more right?"