Rated: M for Sexual things - Don't like, don't read.

Word Count: 3,606

Warnings: Lemon. Dub-con? Master/Slave. AU

Pairings: Master!Leo/Slave!Donnie

A/N: This is officially the longest one-shot I've ever written, as well as my first full-length sex scene and I wrote it all in one sitting. Please bear in mind that my beta reader will not beta Mature content, so I won't be offended by constructive criticism ^^

At the moment this is only a one shot, but I may continue this later so feel free to follow if you like it.

A loud bang echoed throughout the building, alerting Donatello that his so called master was back from his mission.

He had no idea how long he had been a prisoner to the clan leader, but it was long enough for him to give up any hope of rescue. His hands were bound tightly behind a support beam in one of Leonardo's offices, allowing them to slide up and down as he stood or knelt on the floor. His ankles were secured behind the beam by a length of chain, only restricting him from moving more than two steps in front of the poll.

He and his brothers were a part of a smaller clan that had broken away from Leonardo's, choosing to live among the humans instead of fighting against them. He didn't know what had become of the others.

Donatello had never learnt the original language of the clan; growing up with the humans he could speak their language fluently, but he could speak very little of the Kame clans'. It was clear that Leonardo couldn't understand a lot of English, and when he had asked about his brothers his questions had fallen on deaf ears.

Leonardo had chosen his targets well. All three prisoners were the best of the three main skills that the smaller clan prized it's self upon: brains, brawn and agility.

Donatello was the greatest intelligence of his clan, without him the rest would struggle to maintain and create new equipment and weapons, as well as calculate the odds of winning a battle, or rationing out their limited food supply.

Raphael was the muscle of the clan; even outnumbered his great strength and dexterity made him a dangerous enemy to the Kame clan. Even Leonardo carried scars from crossing blades with the larger warrior.

His third hostage was one of the smaller males in their clan. Michelangelo was easily the fastest and most agile; his smaller size made him ideal for sneaking behind enemy lines to steal food and weapons from Leonardo's subjects.

The sound of footsteps approached the room; heavy footfalls sped up as they got closer to the door. Donatello tested his restraints, more out of habit than anything; he already knew that they were impossible for him to break. He was weak and inexperienced compared to the others of his clan.

Donnie flinched as the door was thrown open but he didn't move from his position on the floor; his shell pushed as tightly to the support beam as possible, head lowered to the floor in the vain hope that Leonardo wouldn't notice him.

He knew as soon as Leonardo stepped into the room that he would have no such luck, the mixed scent that flooded the room spoke volumes of what lay in store for the reluctant slave.

Without waiting for the order he got to his feet, lifting his head just enough to confirm his suspicions.

Leonardo had fresh bandages wrapped around his arm, fresh blood stains only just starting to dry. His whole body showed signs of a tough battle, and the look on his face told Donatello that it had not gone as Leonardo had planned.

Leonardo growled something that Donatello couldn't translate, roughly grabbing his chin to force him to look in his eyes.

Donnie didn't have to understand what he said to know what was coming; after an intense battle Leonardo always redirected his anger towards him, sometimes he would be beaten for his clan's actions, and sometimes the punishments were sexual. The way Leonardo's hand travelled down his neck to the top of his plastron, and how he had positioned himself almost flush against his plastron betrayed the treatment he was about to receive.

Taking a deep breath Donatello spread his legs as much as the chain would allow him; giving his master better access for when he decided to take him.

Leonardo's eyes narrowed suspiciously at Donatello, the olive coloured turtle never willingly submitted to him. Every time he would try to delay the inevitable, forcing Leonardo to pry his legs apart and leave deep bruises on his skin as he was forced to punish him further for his disobedience.

"Eager?" Leonardo sneered, his hands firmly pressing into Donnie's thighs preventing him from closing them again, spitting out the English word in a way that let Donatello know how much he hated to speak the language of the humans.

"Obedience." Donnie said slowly and quietly, using the little Kame language he knew in an attempt to appease his master.

Leonardo still looked sceptical; he gave Donnie a warning growl as he pushed up closer to him, his eyes threatening punishment if he was trying to deceive him.

"I'm Tired." Donnie sighed, his eyes quickly widening as realised he had spoken in English. "I tired, tired to fighting." He added in Kame. He knew his Kame wasn't perfect but he hoped that Leonardo would understand that he was trying desperately to please him; he truly was too tired to fight him anymore. He knew it was weak to submit to his enemy, but if it would make his life easier, then he was willing to accept his weakness.

"I am a merciful Master. Obedience will always be rewarded, just as disobedience is punished." Leonardo smirked, he knew that Donatello was not fluent in their rightful language, but if he didn't understand his words then he would surely understand his actions.

Donatello concentrated on trying to translate the unfamiliar words as the anger in his Masters eyes started to fade into lust, Donnie's train of though was quickly shut down as Leonardo's mouth attacked his own.

Leonardo had never kissed Donatello before; his slave was only there to bring him pleasure, not to have any emotional attachments, and certainly not to receive pleasure in return.

The suddenness of the action made Donnie gasp in shock, unknowingly inviting Leonardo's tongue to invade him. Leonardo seemed to pour all of his lust into the dominating kiss, one of his hands coming up to hold Donatello in place.

Donnie was panting lightly, feeling his master's tongue slip inside, claiming his mouth and hitting a sensitive spot on the top of his pallet that made him moan into the kiss. His own tongue accidently brushed against Leonardo's, causing a pleased sounding churr to erupt from the dominating turtle.

Leonardo pulled away when it became clear that the younger turtle needed to breathe, a smug smirk settling on his features as he watched his slave lean his head back onto the support beam, gasping for breath with a confused look on his flushed face as he tried to work out what had happened.

Leonardo once again let his hand slip down his slave's neck, continuing down his plastron until his fingertips brushed across a slight bulge, applying a bit of pressure as he stroked his thumb across the hidden arousal. Donatello's head tilted backwards as he let out a high pitched churr, his eyes closed in pleasure as his hips arched slightly into the touch, his fingers digging into the wooden pole that he was bound to.

Leonardo couldn't help the small chuckle at causing his slave to react so positively to his touch, it was clear that he had been going the wrong way about breaking Donatello; he reacted so much better to rewards than to punishments.

Donnie slowly brought his head back down to look at his Masters face, still panting slightly, his wide brown eyes looking questioningly at Leonardo.

"Obedient?" Leonardo smirked, his hand slipping back to rest on his slaves thigh, gently massaging the skin as he moved his lower body closer.

Donnie bit his lip nervously, not looking forward to the pain that always came when he was penetrated, but he nodded his head. Taking a deep breath and closing his eyes, he waited for the inevitable pain.

Leonardo surprised him by grinding their lower bodies together; twin churr's filled the room as the bulges in their plastrons grew with the friction, Donnie rocked his hips in time with Leo's, adding to their pleasure as they set into a rhythm.

With a full body shiver Donatello's cock dropped down, already half hard, and unable to stay hidden inside its protective pocket any longer. For a few moments Donnie could only gasp and churr as the friction caused him to become fully erect.

Leonardo stopped grinding against him to grasp his slave's penis in his hand, watching Donnie face as he moaned out something about his deity over and over again that Leo didn't understand.

It was clear to Leonardo that Donatello had been a virgin when he had been captured, and even though Leo had taken him plenty of times before now, he still came to think of him as sexually innocent. Every other time had been brutal, he'd had to fight him the whole time and the pain was too great for him to think of it as anything other than torture. This was the first time he'd ever felt any pleasure from any sexual activity, Leonardo doubted if he had even masturbated before.

Almost painfully slow, Leonardo rubbed his hand up the full length, only to run his palm over the sensitive head and stroke back down to the base. Donnie let out a loud moaning churr as his hips automatically bucked forward into his Master's hand.

"I am your master. You only receive pleasure when I wish to give it to you." Leonardo growled suddenly, gripping the penis painfully tight, ripping a pained cry from his slave who looked at him with tearful, confused eyes. "I also decide when you feel pain."

"Do you understand?" The fire in his eyes made Donnie whimper even as his penis was released from the tight grip. He didn't understand all of what was said to him, but his quick mind guessed that Leonardo was angered when he'd automatically thrust into his hand. Realising that he hadn't answered him Donnie quickly nodded his head, showing that he understood.

"Do you realise that you have to be punished?"

Donatello whimpered as he picked up on the word 'punished' but nodded again, his tears started to run down his cheeks making his eyes shine, silently apologising and begging for mercy with his punishment.

"Make it up to me." Leonardo growled, roughly pushing down on Donnie's shoulders, making him fall to his knees suddenly.

Donatello stared up at his Master with wide eyes as Leo started rubbing at the bulge in his plastron. Donnie had made it very clear when Leo started raping him that he would bite, he couldn't help it if Leonardo took pleasure from his body, but his mouth was one of the only things he still had complete control over.

Donatello stubbornly turned his head away from Leonardo as his Master dropped down into his own waiting hand, Donnie's tears slowly streamed down his face but his features were suddenly defiant.

"Prove your obedience to earn yourself some lube, and I promise I will make it pleasant for you."

It was rare for Leonardo to use lube, when he did it still hurt, but the pain was substantially less then when he went in dry.

Donatello hesitated as his masters hand gently ran across the top of his head, slipping down the side of his face to tilt his head up to look at him. The fire he expected to see was gone; instead Leonardo's eyes seemed softer, promising a reward instead of punishment.

Donnie averted his eyes as he let himself be gently lifted so that his mouth was level with the other turtles cock. Leonardo's hands left his slave as he felt the breathe ghost over his tip.

Donnie took a deep breath, trying to shut his mind off what he was about to do. Slowly he licked a little at the head, gaining a small gasp from his Master. He closed his eyes, as if it could shut out the reality of what Leonardo was forcing him to do, just because he hoped that it would save him some pain when he was raped.

"Open wide." Leonardo chuckled, guiding his penis to run pre-cum against Donnie's lips.

Donnie groaned but opened his mouth; he had hoped that he could get away with just licking Leonardo instead of having to give him a blowjob, but apparently that wasn't an option.

"Wider."

Donnie was quick to obey as Leonardo started to sound angry again; he kept telling himself that he had chosen to make his life easier, and for his life to be easier he had to keep his Master happy.

Leonardo moaned loudly as his penis was encased in the wet warm heat of his slave's mouth. Donnie closed his lips around his Masters member, hoping his apparent eagerness would make up for his attempted disobedience. He sucked lightly on the swollen organ, bringing his tongue up to massage the sensitive flesh and earning a high pitched churr for his efforts.

He couldn't help the small whimper as Leonardo brought his hands up to rest on the back of his head, preventing him from pulling away. But the action seemed to send a jolt of pleasure though his Master.

Donnie lifted his eyes to watch Leo's face curiously, as he moaned around his cock, Leonardo's eyes were hooded with lust and his face was flushed, his mouth hung open slightly as his breathes came in short gasps. As soon as the vibrations from Donnie moan hit him his head lifted up, his eyes shutting tightly as he loudly churred out his pleasure.

Donnie could feel himself harden as he watched, answering his Master's churr with one of his own. Leonardo looked down at Donnie, surprised to hear his slave churring; their eyes locked sending a new wave of lust through them.

Leo started thrusting into Donnie's mouth, keeping his hands on the back of his head to stop him from pulling away. Donnie gagged as Leo thrust deeper, pulling out completely as Donnie started choking. As soon as Donnie stopped coughing he thrust back in, careful not to thrust too deeply.

"Relax your throat." He ordered, waiting until he felt Donnie obey before he started slowly pushing in further. Donnie's eyes were wide as they once again locked with Leo's, but Leo was careful as he felt his cock touch the back of his slave's throat. He stopped to make sure that Donnie was prepared to take him. "Take a deep breath." He instructed, waiting till he felt the throat widen before pushing inside.

Donnie whimpered as best as he could with his Master's member lodged into his throat, Leo started moving slowly, loudly expressing how good it felt.

The uncomfortable feeling didn't last long before Leo started thrusting into his mouth again; his movements suddenly erratic as his penis pulsated, coating Donnie's mouth with his seed. He kept thrusting shallowly as he rode out his orgasm until he'd emptied his load into his slave.

Panting as he came down from his high, Leo pulled out of the wet warmth of Donnie's mouth, petting his slaves head as he tried to string his thoughts back together.

Donnie gathered up all of the fluid in his mouth and spat it out to the side, not waiting to see if it was optional. Luckily Leonardo was too lost in his pleasure to mind what his slave was doing.

Leo bent down to place a passionate kiss on his slave's lips, moaning slightly as he tasted himself on the other's tongue. Unlike the last kiss, this one wasn't just a display of dominance, Leonardo actually seem to take his time in exploring the other turtles mouth. He hesitated as he pulled away, tilting his head as he studied Donnie's face, as if he was seeing him for the first time.

Without a word he got up and moved to one of the desks behind Donnie's back, for a moment Donnie thought that it was over, he started to stand back up before he was stopped by a hand on his shoulder holding him down. "Stop down."

Donnie blinked in surprise at hearing Leo speaking English; even though he assumed that he meant 'stay down' instead of 'Stop down' It was still unexpected. "Okay." Donnie answered, sitting back onto his knees as he listened to his Master shifting through one of the desk draws and wondering what he was looking for.

It only took a few minutes for Leo to return, a tube of lube in his hand as he sat down in front of his slave, gently spreading Donnie's knees apart to allow him better access.

He applied a generous amount of lube onto one of his fingers, pressing another gentle kiss to Donnie's beak to try relaxing him as he started to circle the tight ring of muscle. Donnie's hands were clenched around the beam, and his eyes were closed tightly as he waited for the pain that he associated with penetration.

Leo let his hand slip lower between the olive legs to massage and stroke his tail, earning a slight moan as his body started react. His other hand started to rub against his lower plastron, encouraging him to drop down.

As soon as his cock slide out it was surrounded by a warm hand, making Donnie churr loudly, the pleasure completely masking the finger slipping inside him.

Donatello didn't even realise that he was being prepped until Leo's finger brushed against something that made his back arch as much as his shell would allow him. Panting, Donnie locked eyes with Leo as he pushed a second finger inside him. It didn't take long before Leo deemed him ready.

Leo made sure his member was covered with a thick layer of lube before slipping his legs underneath Donnie, glancing at Donnie to make sure he was ready before guiding his member to his slave's slick hole. He allowed Donnie to slowly lower himself down, helping guide his hips as his hands were still tied behind him.

Donnie whimpered at the feeling of being stretched, but he was surprised at the lack of pain, as soon as he was fully seated onto his Master his cock was stroked back to life making him churr happily.

He gasped as Leo thrust his hips upwards; Donnie got the hint to start moving, using his legs to push himself up before slowly lowering himself back down. His eyes were closed as he concentrated on using his leg muscles, trying to grip onto the wooden beam to help support him as he tried to get used to the uncomfortable feeling.

Leo waited until Donnie was lowering himself down before thrusting upwards, causing Donnie to throw his back with a loud high-pitched churr as Leo hit his pleasure spot. He leant back against the beam for a second as the pleasure spread throughout his body before he started moving again, moving faster and deeper to try and hit that spot again.

Leo moaned loudly, closing his eyes as he drank in the delicious grunts and gasps his slave was making as he willingly bounced on top of his cock. Leo would thrust up randomly; catching Donnie completely by surprise and reminding him that Leo could take control from him at any moment.

Donnie started to slow down, whimpering quietly as his leg muscles started burning. Leo smirked, leaning forward to undo the chains around Donnie's ankles. In one swift movement Leo picked up his slave by the bottom of his carapace, staying embedded in the tight heat as he pushed him up against the beam, lifting his legs to wrap around his shell.

Donnie threw his head back against the beam churring constantly as Leo began to thrust inside him, the new position hitting his prostrate on ever stroke. Leaning forward, Leo engaged him with a passionate kiss, trapping his cock in-between them to rub against his Masters plastron adding to his pleasure even more.

Leo broke the kiss to bury his face into his lovers shoulder, thrusting hard and fast as he tried to bring the younger turtle off.

Donnie was churring and gasping loudly, his fingers digging painfully into the wood as he climbed higher and higher towards his peak with every thrust. Leo brought a hand down between them to stroke Donnie's cock, but as soon as his fingers brushed against it Donnie's world exploded into a blinding white light, dragging Leo with him moments after.

Leonardo undid the restraints around Donatello's wrists before pulling out of him. Donnie was all but asleep and he happily clung to his master as he was carried towards the cot in the corner of the room. The cot was meant to be for when Leo was working late in the office, he couldn't think of a single time he'd used it, but now he was very grateful he'd decided to keep it in here. Leo gently placed his slave in the bed, wiping him over lightly before covering him with a blanket, Donatello was already fast asleep.

Leonardo smiled to himself as he headed off to have a shower, confident that his slave would not be awake enough to try and escape before he got back. He'd tried for months to break Donatello into being an obedient servant, but after tonight he knew that he had been wrong to think that the young genius would serve him willingly. But that hardly mattered now; Leo decided that he had enough servants; Donatello was better suited to serving him another way.

Besides, Donatello will make a great pleasure slave.