Warning: Splintercest.

Splinter caught Leo’s attention during practice. The slight incline of his head was all his master had to do to signal his desires. It didn’t happen often so when it did, it was all Leo could do to contain his excitement. 

It was an arrangement that had started years ago. Splinter had given Leo some literature about ancient Japan. Among them, there were stories about wakashu, students of master samurai who were intimate with their masters. 

Though he had his doubts that maybe he was reading more into the gesture than was there, Leonardo took a chance and visited his father one night. There was a rule that none of them were allowed to enter their master’s bedroom but, instead of being reprimanded, he was met with a smile. 

It was a night Leo would never forget. 

Splinter might have been older, but he was still young. Young enough to experience desires of the flesh. Leonardo was more than happy to help satisfy those needs and it brought him a great sense of pride that he was the one chosen for the task.  

He waited in his room to give his brothers enough time to fall asleep. He wasn’t sure they would understand or worse, get jealous. Being the one Splinter turned to made Leo feel special, he didn’t want to lose it or share it with anyone else. This time was just for him.

Looking at his clock, Leo decided that enough time had passed. He carefully opened his well-oiled door and listened just to make sure. 

Though his heart was pounding in his ears, he could hear the rumbling snores coming from Raph’s room. There were no lights coming from either Donnie or Mikey’s room, indicating that neither of them were still up. Satisfied that he brothers were asleep, Leo carefully made his way to the dojo in the dark.

There was a dim, flickering light coming from his father’s room. Leo silently made his way across the dojo, wondering if he was skilled enough to surprise his master. It was doubtful but he liked to try.

His lower plastron was already starting to bulge in anticipation, making it difficult to walk. Taking a few deep breaths, Leo slid the door to Splinter’s room open. 

Splinter was sitting on his tatami, meditating while he waited. Looking up, he said nothing while Leo closed the door behind him. 

There was a hunger in Splinter’s eyes as he watched Leo. It was a look that was never seen outside of this room. A look that only Leo knew and it excited him, practically stopping his breath. 

The room smelled of sandalwood and lemongrass. It was cooler than the rest of the lair. Splinter’s thick fur kept him warmer than the others. Everything was tidy and purposely placed. Weapons and photos adorned the walls along with other keepsakes Splinter had managed to carry over from him humanity. 

Leo knelt down on the tatami, in front of his father and waited for his silent instructions. 

Splinter affectionately traced his fingers along Leo’s jaw line. The simple gesture ignited Leo’s senses, forcing him to release his erection before it became too painful to contain. Internally he chided himself for not being able to maintain control. It was embarrassing how easily he was to arouse. 

With a soft smile, Splinter kept his eyes fixed on Leo’s while he drew his fingers down Leo’s neck and across his collarbone. As his fingers followed down the center line of Leo’s plastron, Splinter leaned in for a kiss. 

Leo whimpered in painful anticipation of his father’s touch. By the time Splinter’s fingers reached the place where his plastron parted, Leo could feel the tip of Splinter’s tail sliding along the underside of his. 

The thin cord like tip was already slick with lubricant. It passed easily into Leo’s rectum to play with is prostate. 

Breaking the kiss, Splinter gently sucked on Leo’s neck. 

Tilting his head back, Leo dug his fingers into the sheets of his father’s bed. All it took was a few strokes of Splinter’s hand to set Leo off. Once again, Leo felt the heat of embarrassment but it was nothing compared to his excitement. 

He wanted to cry out, but he knew he had to stay quiet so he covered his mouth. His body trembled with each stroke of Splinter’s experienced hand, each flick of his tail. 

When Leo started to calm down, Splinter removed his hand and licked it clean. He then stood and removed his kimono, allowing it to pool on the floor behind him. 

He was wearing nothing underneath it. His erection standing proud, level with Leo’s mouth. The musk of his arousal permeated Leo’s senses. With a deep breath, Leo breathed it in. 

Without hesitation, Leo leaned in and wrapped his lips around Splinters pink cock. With one hand gently caressing Splinter’s balls, Leo relaxed his throat and took all of his master into his mouth. 

Splinter caressed the back of Leo’s head while his tail placed the bottle of lubricant in Leo’s free hand. When Leo moved to prep himself, Splinter’s tail wrapped around his wrist. Unsure of what his master wanted, Leo relaxed his muscles and allowed the tail pulled Leo’s lubed finger up between Splinter’s legs. 

Excitement bubbled inside Leo, bringing his erection back to life. He didn’t want to assume how far he was going to be allowed to go but the promise was there. 

He continued to suck Splinter’s cock while he teased the tight ring of muscles hidden under his master’s tail. When Leo’s finger penetrated him, Splinter moaned and his penis hardened. His muscles tightened around Leo’s finger and his penis demanded to know what it was like. 

It was a lesson of patience and there was no guarantee that it was going to happen. 

Probing deeper, Leo swirled his finger around Splinter’s prostate. He was rewarded with a deep moan and a gentle caress on his cheek. His head bobbed along his master’s length. Using his lips, tongue, and oh so delicately his teeth, lavishing the appendage with attention.  

A sharp intake of breath was his only warning before Splinter blew his load into Leo’s mouth. His legs trembled and he held onto Leo as he struggled to remain standing. 

Leo swallowed every drop, reveling in the fact that it was a taste that only he would know. 

Panting, Splinter pulled away and Leo did nothing to stop him. He eagerly watched Splinter lie down on his back, legs parted. 

Not wanting to assume anything, he looked up at his father’s face to wait for confirmation. Splinter smiled and nodded his head, giving Leo permission. With trembling hands, Leo coated his finger with more lubricant before he continued his prep work. 

He wanted to show that he was able to control himself, so he took his time and focused on what he was doing instead of what he was about to do. His efforts were rewarded. It wasn’t long before the muscles stopped resisting him and easily stretched to allow his thick finger. 

Leo moved over Splinter, the whole time watching his master’s face as he settled between his legs. Splinter parted his legs further and lifted his hips slightly, inviting Leo in. 

Leo coated his cock with lubricant, knowing that, even with the muscles stretched, it would be needed to help ease the passage. His stomach was in knots and his penis threatened to explode on contact. Leo bit his inner cheek and willed himself to calm down.  

Lifting Splinter’s balls gently with one hand, Leo lined his tip up with Splinter’s rectum with the other. Splinter let out a deep, steady breath while Leo pressed inside. The silky warmth of his father’s ass felt amazing around his needy cock, causing him to tremble with exhilaration. 

Knowing what it was like to be on the receiving end, Leo took his time working himself deeper. If there was any discomfort on Splinter’s end, he wasn’t showing it. 

Holding back his impending orgasm, Leo was determined to last longer than a few seconds. He had to prove that he was ready for this step up, that he wouldn’t lose it after a few thrusts. This was about satisfying Splinter’s needs, not his own. 

Focus, Leo told himself. He used the hand that was still slick with lubricant to jerk Splinter off while the other one played with his nut sack. It was Splinter’s turn to grip the sheets, moaning deeply as his head rolled back. 

There was one more thing Leo knew his father liked. He leaned forward and used his nose to reveal the pink nipple hidden under the fur. His tongue shot out to lick it before he captured it with his lips and began to suck. 

Arching his back, Splinter stifled a cry as he climaxed. Splinter’s muscles clamped down around Leo and he could no longer stave off his orgasm. Pressing in as deep as he could go, the young turtle came. Leo felt a great swell of pride knowing that he had succeeded. He would sleep well tonight knowing that he had left Splinter satisfied. 

Part of him didn’t want to pull out. It was all over too soon and he didn’t know when he would be able to experience it again. Why couldn’t things like this last a little longer? 

Neither of them moved while they caught their breath. Closing his eyes, Leo buried his face in the fur on Splinter’s chest. Eventually, Leo’s spent penis fell out of Splinter, followed by most of the cum. Leo sat up and saw streaks of white across Splinter’s stomach. Sex was messy. 

Getting up on shaky legs, Leo walked over to the small wash room in the corner. Once the water was warm, he quickly cleaned himself before tucking his penis back into its protective pouch. 

After a few moments, Splinter joined him and Leo gently cleaned the mess he had made, the lavender soap hiding their scents. Leo then removed the soiled sheets and replaced them with clean ones. He scrubbed all evidence of their encounter away by hand and then set the sheets on a line to dry. 

Using a special brush, Leo helped groom his father by removing the loose fur from his coat. The process also helped to dry him faster. It was a task Leo did often in full view of his brothers but in this setting, it felt more intimate and less like a chore. 

Splinter drew Leo in for one more kiss and Leo knew he was done for the night. He didn’t know when his father would call on him again but, when he did, he would be ready, eager to help.