Chapter Text
“Where’s Donnie?”
“Lab,” Raph and Mikey responded in unison while they dug through the refrigerator. It was the weekend; oftentimes, the turtles would venture around, searching for an activity. If that weren’t the case, one of their many foes would have shown up, bringing with them a tiring day of fighting. But not this weekend. Usually, Leo wouldn’t have a problem with this. Less work means more fun. Unfortunately, he found himself becoming incredibly bored. So bored, in fact, he had entertained himself for half an hour by just throwing stale potato chips at his dad’s open mouth while he snored loudly in front of the television. Mikey piped up, his voice slightly obscured from the refrigerator door.
“He’s always in his lab, Leo,” Mikey looked up from the refrigerator and dropped some food on the counter; a few tomatoes, a bag of shredded cheese, and dough that had been rising for a few days. He then kicked the door shut.
“Ah… why did I ask,” Leo muttered to himself.
“Actually.” Raph stood up, holding a couple of sausages in his hand. “I haven’t seen him all weekend. He’s just been in his lab all day and night… seems strange.” His mask wrinkled slightly as his expression changed to that of thought. And after a few moments, he straightened up and chomped off the end of a sausage. “I’ll go check on him.”
He quickly exited the room, leaving Mikey and Leo to exchange glances, before they both followed. As they moved down the sewer hall in the direction of the lab, Leo promptly caught a whiff of something weird. It tickled his nose at first, almost beckoning him to come closer. Distracted by trying to find an explanation for the smell, he slammed right into Raphael’s stiff, hulking form and fell backwards. His brother let out a small snerk from above him.
“You ok?” Mikey giggled. Leo grunted, rubbing the back of his head and getting up with a huff.
“Yeah, yeah… Raph, what the hell?” He narrowed his eyes at Raphael, who turned around, nervously clasping his hands together.
“Haha… uh, sorry Leo… I was distracted… uhm,” He ran his hand against his head, seemingly embarrassed. “Let’s leave Donnie alone.”
“He’s okay… right?” Mikey asked, slightly confused by Raph’s sudden reluctance to check on his brother.
“Yep, I just think.. he needs time to himself…”
“But how do you kn-”
“I texted him just now and… he said he’s good.” Raphael smoothly cut across Mikey’s words. And while it was very uncharacteristic for Raphael to lie, well. However, Leo, master of deceit, could easily see through the fib. Mikey, seemed like he was buying it. “Anyway, let's make that pizza. You said you would show me how to deck out a pizza.” At the mention of cooking, Mikey’s face split into a wide grin and leapt onto Raphael’s shell, balancing on it easily.
“Yes! So, seasoning is the key to anything tasting good. That and quality ingredients. I bought a ball of mozzarella and fresh basil and-“
As Raphael walked off, Leo stood still. He looked in the directions of the lab, still sniffing the air.
“You know, I think I’m gonna read one of my new comics.” He said loudly, tapping his foot on the ground. He waited until he couldn’t hear the large list of ingredients Mikey was listing off and then he trotted toward the lab. Raphael’s behavior had him even more curious about Donnie. Usually, it’s hard to stop his eldest brother in his tracks like that. As he got closer to the doors of the lab, that sweetish and strange scent got stronger, becoming more pungent. It wasn’t off-putting but more dizzying. Almost pushing in his head, pounding with his breath. He stopped at the door and inhaled deeply, Leo could almost feel the scent wafting around him and he could tell that it was coming from the lab. He was almost drunk with the aroma. What cool shit is he working on? He thought as he jiggled the door. As he was expecting, it was locked, and with Leo’s security system, he knew he wouldn’t be able to manipulate it open. That being said, he smirked.
“Bro… ya really think you can keep me, Leo , out? Please.” He searched for the vent he often used to break into Donatello's lab and crammed his body into it, following the path he memorized. Unfortunately for him, because of past incidents of him breaking in, Donatello had taken precautions. A spider-like robot was waiting for him, hidden in a dark corner and springing to life as he passed it. He felt it pounce on him and an immediate electric shock coursed through him, while mechanical, slightly familiar laugh issued from the thing. He shrieked and slammed into the vent walls, struggling to get away from the shock spider and with all his haphazard body slamming, he fell right through a grate. He fell onto a desk and then crashed to the floor onto his face.
“F—uck” Leonardo sat up, vaguely frustrated that this was the second time he tumbled to the floor today. Wasn’t he a god damn ninja? He rubbed his forehead as he basically had fallen on his beautiful face and a dull pain thumped in his forehead.
“Why are you here?” A familiar, dead-pan voice spoke up behind him. Those words caused him to shoot up and spin around to see Donatello just behind the table he had fallen on. He was currently wearing his goggles and a blowtorch in hand, currently smoking. Leonardo cracked his neck, trying to work the pain. He grinned at the vaguely annoyed scowl on his brother’s face about to respond but was interrupted by the vent spider jumping down and lunging for his face, laughing maniacally. He yelped and barely was able to dodge it. It continued on its assault, skittering around him, trying to get a better angle to throw itself on him.
“Call it off! Call it off!” His panicked yelps cause Donatello’s lips to twitch into a smirk. It seemed to be working as intended. He pulled up his googles and folded his arms. Watching Leonardo leap over the table and duck as the spider jumped at him once again.
“Hm… should I though? I wanna see if the tranquilizer mechanism works.”
“What!? Donnie!”
“Alright.” He lazily pressed a button on his wrist cuff and immediately the spider stopped giggling and curled up. Leo hunched down, panting and putting his hands on his thighs. “So…” Donnie continued. “Why are you here? Do you know what a locked door means, or…?”
Leo huffed softly. Now that he wasn’t being attacked by that taser spider, he focused on the room he was actually in. Standing up straight he could see the place was uncharacteristically a mess. Mechanical bits were everywhere, on the floor and not just because of his face smashing into them. There were crumpled up bits of paper with blue pencil markings on them. Nuts and bolts were littered all over the floor. He raised his eyebrows as he surveyed the mess. It reminded him of his room. Not only was the room a mess, but the scent he had been following was also intense, and aggressively so.
“Ya know, seeing if you are alive and all. We haven’t seen you in days.” He heard his twin sigh deeply.
“I’m fine, see?” He waved his hand over his body and then pointed to the door. “You can leave now.”
“Wait, though! What are you making?” Donnie frowned at him and then turned to what he probably was hovering over before Leo fell through the vent. Honestly, to Leo, it looked like a bunch of scrap metal and wires. He couldn’t imagine the scent was coming from there.
“Nothing… I can’t focus on anything at all…” The last part of his sentence he muttered more to himself than to Leo.
“Naw man, you have to be up to something.” He stood on his toes to try and see if there was anything on the other side of the table that Donatello was blocking. “What’s making that smell? Are you hiding a stash or something?”
“Smell?” For a brief moment, shock flitted across Donatello’s face before smoothly replaced with indifference. “I am not working on anything that would produce an odor. Vamoose!” He waved his hand in a shoo-ing manner and turned his back on him, leaning over his clump of trash.
“You’re lying, it reeks in here.” He began looking around picking things up and sniffing it curiously. “Did you find some mutant weed? Or is this what uranium smells like?”
“If you smelled uranium you would be dead, Leo.” He didn’t pay attention to his brother's snappy retort. His full attention was on finding out what that smell was. He was starting to pick up another note to this scent, sweat. He shook his head slightly as the smell got stronger and stronger. It was so overpowering, at the same time not gross… just strong and.. addicting?
“Leo..”
He ignored Donatello again, moving his head back and forth, looking around as he sniffed the air like a dog searching for a treat.
Thunk !
He knocked against Donnie and looked up to see him glaring at him. There was a moment where they just stared at each other and Leo made a loud sniffing noise and then slowly a wolfish smirk spread across his face, while Donatello’s exasperation became more pronounced.
“Holy shit, really?”
“Stop.”
Now that he was able to take in Donatello’s full appearance, he was now able to see the full picture. While from far away his brother seemed normal enough, up close he was a disaster. He had bags over his eyes like he hadn’t slept at all. He seemed to be sweating profusely, and even now Leonardo watched a bead of sweat run down his neck into his chest and shell. His breath was ragged and his eyebrows were knitted in frustration.
“This is so good!” Leo cackled, making Donatello’s glower deepen and he rolled his eyes. “Man… your rut isn’t going well is it?”
“Urg, Leo can you please just leave me to fester in the agony Mother Nature has bestowed on me?”
“Stop being a drama queen. We all go through it. This just seems like a lot right? Must be worse this year.” Leo picked up unfinished machinery laying about and began tossing it up and down in the air. Donnie’s eyes followed the motion. “I don’t ever remember smelling you.. like this. Take a shower, dude.”
“I shouldn’t leave this room… I—I can’t focus enough to take a shower…”
“You can’t focus enough… to take a shower.” He repeated with a raised eyebrow. Donatello’s groaned, his form sunk in on itself. Leonardo chuckled softly.
Cute .
Shit eating grin firmly in place, he turned around, throwing the ball of scrap and wires over his shoulder. He heard Donatello catch it.
“Just go and jack it, bro. I thought you were the smart one…”
“Don’t you think I’ve tried that?” Donatello’s voice was low and when Leo looked over his shoulder, he saw him with his hand on his head, scowling at the ground. “Nothing works.”
“Maybe go harder then?”
“What? What does that even mean?”
“I mean like, do more stuff to yourself. Stick a finger down there. It gets me off.”
“The fuck…?” Donatello stared slack-jawed at him, mouth slightly open. He didn’t seem to register what Leo had just said. So, he spun around, grinning.
“You know what I mean! Stick a finger in while you're jacking off.” To illustrate what he met, he twirled his finger in the air. Almost immediately… maybe in direct response to what had left his mouth, Donatello rut scent intensified. Leonardo narrowed his eyes as it hit him stronger than ever before. He blinked a couple of times, focusing on Donatello, who had a funny expression on his face. It was interesting to see Donatello like this… He was normally so good at keeping his haughty, indifferent persona. It was almost nice to see his eyes flash with desperation.
“I cannot believe… you said that...when I’m like this.”
“Look.” Leonardo shrugged, deciding to tease him just a bit more. “I’m just trying to help you out.” He said this as if his brother had simply asked him out to beat a video game. Donnie continued to look at Leo in dismay. Leonardo foolhardily pushed the subject. “Take your finger and play with your slit, it makes you cum fountains. Trust me.”
Maybe it was the rut scent keeping him from processing the reality of the situation, but just now he just realized what type of conversation he was having with his twin. He didn’t really know how they got to this point. It seemed neither did Donatello. His rut was affecting his judgement too… had to be. He had crossed an unspoken line between them and the scent coaxed him into recklessly pushing those boundaries even more, irresponsibly and vulgarly. Donnie’s face contorted, almost like he was in pain, before relaxing. He let out a breathy sigh, and as Leonardo watched him straighten up he thought he might have gone too far…
“Yeah? I mean I guess… there are probably lots of nerve endings down there, right?”
“Yep.” Leonardo could hear Donatello swallow loudly and, fuck, was the scent really starting to get to him. He felt almost drunk and swayed a little bit. But he shook his head a little bit. Maybe this was why he didn’t notice that Donatello was now in front of him… or maybe it was just his ninja training? Either way, he was standing over him and it was then when he realized his twin had a slight height advantage over and even though it was slight this was the first time he was fully aware of it. Leonardo looked up into his eyes, and his heart throbbed. Donnie was looking at him like a piece of meat. Yep, he’s got rut brain now. He thought, taking a half step back. He jumped when he saw those hungry eyes dart downward, quickly but obviously. He couldn’t have just… “Donnie, you okay, buddy?” He tilted his head as his twin practically began stalking him like prey. A chill ran down his spine, alarm bells playing in his head. This was bad… He fucked up. Even so, he felt the anticipation of what Donatello would do. What was he thinking exactly?
“Yeah, I’m fine… fine. Say, Leo, why don’t you show me?” Leonardo’s mind went blank and he tilted his head in confusion.
“W-wha-?”
“Show me.” This time, it was an order. And now it was his turn to look flustered. He chewed on his lip.
“Like…how to play with your slit?”
“I’m glad you are starting to comprehend my words.”
Leonardo speechlessly stared at him as the alarm bells in his head desperately rang. The line was crossed, no it was destroyed. There was no more fucking line. But the haze of his brother’s rut scent was affecting his better judgement. Even as he stared at Donatello, who was smirking down at him, the alarm bells dulled and he could only hear those words he had said to him. Show him? Show him how hard I can make him cum from it. No… wait… what?
“Are you scared?”
“W-who would ever be afraid of you.” He retorted, but he tripped over his words in his nerves. Donatello licked his lips, and he felt a jolt in his crotch and his tail twitched in his shorts. God, why does he have to look like that… “Don, I-I’m gonna level with you a bit. You got some serious rut brain right now.” He murmured, gently pushing against the other’s chest and Leonardo heard his breath ever so slightly hitch. He gulped. “I was just trying to help you out.”
“I want you to help me.” Donatello grabbed his hand roughly from his chest. “So show me.” He shoved Leo’s hand into his crotch and Leo suppressed a gasp. Donatello was wet, utterly soaked through his shorts… and he was touching him. He heard Donnie let out a low shaky sigh and the tail in his hand squirm in his pants with delight. His own brother was now grinding against his palm. He swallowed thickly as his rut scent curled around his nose, so tantalizing, almost inviting him to continue, and deep within him, he felt his last shreds of restraint disintegrate.
He exhaled softly, then looked up at Donatello, meeting his eyes and squeezed his dripping tail through his shorts. His heart stopped as Donnie’s expression melted, his mouth hanging open ever so slightly and the little whimper he made, made him dizzy. All his senses now focused on getting his brother to cum. He pushed against him, making Donatello’s step back until his butt hit a nearby table and he grabbed his head pulling him into a rough kiss. He thrusted his tongue against Donatello’s lips and accepted him hungrily. Soft smacking noises and little sweet sighs left them and Leo's hand, still firmly grasping Donatello’s crotch, ran his fingers against Donatello’s writhing tail, pressing his palm firmly against and moved it in slow tantalizing circles. He could hear Donatello grunt in delight and pulled him closer by grabbing his ass. Leonardo smirked into the kiss and he dipped his hands into Donatello’s shorts.
His tail was soaking wet and he could feel it was swollen as well. He ran the pads of his fingers against the underside of it, feeling for a slight change in scales and when he found it, gently pushed his fingers against the slit, only slightly dipping his finger inside. Donatello broke the kiss as his head jerked back and he hissed as he withstood a ripple of pleasure. He could feel the slit twitching furiously against his finger and when he added more force, pushing completely through. The heat that was radiating from it was indescribable. Leonardo swore softly under his breath, gently moving his fingers in and out, allowing the other to grow use to his fingers. And then he felt something hard push against his finger…
Was that Donnies dick?
The knowledge that his cock was so close to his entrance let Leonardo know his brother was close to letting it loose. He smiled into the yellow eyes looking down at him and forcefully added another finger, pumping them unceremoniously and in the loudest way possible. His two fingers stroking the tip of his manhood. He could feel it quivering excitedly against his fingers, pushing forward against his second knuckle. The hot walls around him squeezed and twitched around with glee and gushed more pre-cum causing those lewd noises get louder.
“Hn… W-what the f-fuck.” Donatello’s eyes were glazed over with lust as he looked down to watch Leo’s hands play with him. He had now scooted himself onto the edge of the table rocking his hips slightly and his legs now loosely wrapped around his waist.
“Yeah, it’s awesome, isn’t it?”
“Haha… fuck… go faster.” That low growl sent a shot of pleasure through his spin and in his groin.
“Yes, sir.” He murmured and began pumping his finger. Through long exaggerated movements, Donatello’s voice hitched and he titled his head to the side and chewed his lip. I want to see.
With that thought, he pulled his fingers out and yanked down his shorts. Donatello’s tail was pushed forward while the slit throbbed and twitched from his earlier stimulation. He smirked when he heard a groan of frustration in his ear.
“I’m literally going to kill you.” He panted softly.
“Hehe, yeah…”
“What are you doing? Finish it.” To illustrate his impatience, he hit Leonardo’s ass with the back of his foot.
“Be patient.” He heard his brother click his tongue in annoyance. He leaned closer, his finger’s running down the glistening slit. “I wanna see you drop.”
“Fu-ah!” Was all Donatello could choke out before he plunged his fingers into him again, aggressively thrusting them in an out. He could feel the other’s shutter and watched his muscles twitch as Donnie endured the onslaught of pleasure. His feet curled and he leaned back onto the table. Finally, Leonardo felt the muscles around his slit turn to butter and Donatello’s dick pushed forward, twitching.
Leonardo’s gazed at it transfixed as it stood proudly before him. The scent of it was intoxicating and the size and shape? Whoa.
“Donnie, baby… you're fuck’n hung.” Donatello snorted above him. “Mine doesn’t look anything like yours.” He continued staring down the small twitching ridges that surrounded the head.
“Well, we are different species.” Leonardo stroked his shaft, electing a grateful sigh from Donatello. He ran his thumb against the tip and the ridges and saw beads of pre-cum dribble out from the tip, and almost in response to his touch, the ridges twitched toward his fingers.
“It’s weirder than mine.”
“Hey! I’m proud of my anatomy, thank you very much.” He said haughtily. Leonardo shrugged, and leaned forward to pull him into another deep kiss, playfully nipping at lips, while he slowly began to stroke his dick. Donatello groaned and huffed against him, his hips bucking forward. However, he was impatient. He wiggled his hips back and forth impatiently. Leonardo couldn’t help but smirk against him. He pumped his dick lightly, twisting his wrist back and slowly pushed fingers under his dick and pushed through the now very loose muscles. His walls squirmed around him delightfully while seemingly pulling him in deeper. His hips shook wantonly with each thrust of Leonardo’s fingers. “Yesss…. yesss.” Donatello’s low hiss was muffled as they continued to kiss and Leonardo in his excitement and satisfaction sped up his movements. Even though he was his brother… or maybe because it was his brother, seeing his face break into sheer ecstasy was insanely addicting.
He pulled his lips away from Donnie and as they separated a trail of saliva extended and broke between them. He purposely pressed the tip of Donatello’s dick with his nail, while pushing his fingers deeper searching for a small bundle of nerves that he knew would drive him crazy. He exaggerated his movements while watching Donatello’s face intently and listening to the keening gasps and excited breathy sighs. It seemed that he was completely out of it. Everytime Leo would pull his fingers out, Donnie would chase them, bucking his hips desperately. He was now leaning back completely on the table, propping himself up with his arms. He watched as his brother’s face slackened, his hooded eyes watching his fingers work. When he slightly changed his angle toward Donatello’s stomach he felt his whole body jump and he almost lost his balance.
“You liked that?” He chuckled, now that he found what he was looking for, and gently manipulated his sweet spot. It seemed that Donnie wasn’t able to respond, his voice had gotten more desperate and he closed his eyes tightly as if bracing himself.
“Ha! Aah….! Fuck.” He gritted his teeth and began to tremble. The muscles around his finger clenched hard around him. He came hard, hot milky fluid scattering across his chest, up his breastplate. Leonardo groaned quietly to himself as he felt his own arousal shutter inside him. The realization that he desperately wanted to fuck Donatello hitting him like a ton of bricks. He thrusted his fingers forward, letting Donatello ride out his orgasm. After Donatello rolled his hips eagerly against his thrusting fingers, he slumped back onto his shell, panting hard.
Leo let out a low whistle and pulled his fingers out with a soft squelch. He watched as his brother tried to regain his breath and felt another desperate and painful pang inside himself. He was so hard, his dick hurt. Fuck.
“Ah well,” His voice was lower than normal. “I think I should—“
“Finish what you started.” Leo flinched and watched as Donnie sat up. The glazed hunger still hadn’t left his eyes. He pushed himself into a sitting positioned, and his still very erect dick leaned against his thighs. He wrapped his long legs around Leonardo's body, giving him a pointed look.
“Yeah… but… this…”
“You started this, so finish it, Leonardo.” He twitched at hearing Donatello use his full name, spoken like that... Spoken so luridly by his fucking twin.
“There… is no coming back from this, Donnie.” His voice shook slightly as he spoke. He struggled to hold back his lust and desire to ravish him and leaned forward, looking down at his cum drenched torso. He heard a drunken chuckle.
“There was no coming back from this, at all…” He felt hand’s grab his chin and force his face upward. He looked back into the hooded hungry eyes. “We are never coming back from this… It’s already happened. So, let’s just enjoy it.”
“Yeah…”
“Yeah.”
Leonardo pushed himself up on the table and hovered over him. He glanced over Donatello’s dick, his eyebrows raised. “This rut has really got you.” Donnie gave him a bleary smile.
“Yeah… it’s pretty rough this year.” He said this almost casually, through soft pants. He grabbed Leo’s shorts and pulled them down, revealing Leonardo’s tail pushed forward and twitching. All Leo could do was grunt and chew his lip as fresh air hit his slit. His dick gave another painful throb. He knew he was harder than he had ever been before… and this situation was so…
“We’re so fucked.”
“Yeah…” Donatello began stroking and teasing his slit while it shuttered. He could feel the muscles loosening rappedily, and Leo to suck his teeth in and buck his hips. It did not take long, when Donatello pushed his finger against him he almost felt his dick surge forward, violently.
“Ah, shit!” He unsheathed immediately and it almost took his breath away. He was dizzy from the intense burst of pleasure and need and he had to shake his head to clear it a little. He looked down to see Donatello staring down at his dick, almost as if appraising it with a raised eyebrow and a smile playing around his lips.
“That didn’t take long.”
“Yeah, well… I’ve had a boner for a while, trying to get you off.” He sniffed. In response Donatello traced the slit, now stretched by his dick and his breath hitched and his hips bucked.
“It’s different from mine.” He purred, ignoring Leonardo's retort, running his fingers up and down the base. While he wasn’t as long as Donatello’s, Leonardo was thicker and his head was in the shape of a spade. Donatello licked his lips.
“Donnie, babe.” Donatello raised his eyes up gazed into Leo’s. “Driving fuck’n crazy.” He pressed his fingers into Donnie once more, causing him to groan and spread his legs a little more. “God, why are you so sexy.” He began working his fingers, focusing this time on spreading and scissoring him enough to fit inside. Donatello definitely didn’t seem to be feeling any pain. He gazed at Leonardo, his mouth slightly open.
“Leo.”
“Yeah.” He looked up and felt a hand grab his chin again, his eyes widened a bit. Donatello was surveying him calmly. His tongue in between his teeth.
“I really need you to hurry up and fuck me.” Leonardo could have cum at the moment. His mouth hung open as he gazed into his eyes. He pulled his fingers out and positioned himself at his entrance. Wordlessly, he pushed through the ring of muscles and pushed into his depths. The heat enveloping him left him breathless. Not leaving Donatello much time to adjust to him, he did what he was told, advancing roughly into the welcoming heat.
“Ahhhh! Yesss!” He could barely register Donnie’s crying out in sheer bliss. He sank his dick deeper and deeper. He could feel the walls squirming greedily around him and he grabbed Donatello’s hips pulling him closer. He leaned over against Donatello’s shoulder and pushed the last couple of inches in. The scent that had bought him here filled his nose as he buried his face into his neck. He inhaled it deeply, like he was smoking a good blunt and pulled all the way out and slammed back in. He pushed Donatello down into the table, groaning with each thrust. It made his head spin as he listened to the sighs and gasps of his partner and felt the legs around him fall off, giving him more room to thrust. He angled himself, aiming for the same bundle of nerves he had found earlier and was rewarded a loud gasp.
“Hnhg!” Abruptly he felt Donnie’s body clench around him with almost unbearable tightness. Was he coming again? He shifted so he could look down his chest and saw fluid dribbling down onto his belly. He felt his head being grabbed and he looked up to see Donatello’s face, split in intense throws of ecstasy, his mouth hanging open wordless from the tremors in his body. He held his hips down and purposely aimed for his prostate. Whimpers leaked from Leonardo’s mouth and he squirmed his hips as though trying to get away from an unmerciful assault, but Leonardo kept him pinned.
“Ahhh…. fuck-Leo… intense!”
“You wanted this.” He chewed on his neck. Donnie pushed his head into his throat and craned his neck to give him more access. Leonardo growled excitedly and sucked and licked across his neck and collarbone. The orgasmic shudders rocking Donatello’s body slowly settled to twitches and Leonardo loosened his grip on his waist. He nibbled up Donatello’s neck and jaw and he felt a sharp tongue on his head and lips crush against him. Their teeth clacked together violently and their tongues twisted against each other hungrily. Even though Donnie had cum two times already, he still seemed frantic in his lust. Fuck’n amazing… He felt Donatello pull his head away from the kiss and angle his head to expose his neck completely.
“You smell so good.” He murmured against Leonardo’s damp skin. “I can’t get enough of it.” He dragged his tongue over Leonardo’s pulsing skin.
“F—uck” Leo felt the urge to come welling up inside of him. He lifted one of Donatello’s legs over his shoulder and shifted him onto his side. He looked back at him with tired, smoldering eyes, biting his lip. Leonardo then pulled nearly all the way out and slammed back in. He was panting now. Each thrust sent him higher. Donatello’s moans turned into little whimpers, almost like he was pleading. Fuck, he looks so good like this. He thought, watching him claw at the table and drool dribbling down his chin.
“Argh…..f—uck! Ah… Leo… please, mph… c-coming.”
“You serious?” He panted. Donatello shook his head painfully and he watched as his eyes rolled back and the howl of ecstasy that left him almost made his heart stop. The muscles around him clenched him hard enough it almost hurt. It was hard to keep him in check as he swung his hips desperately trying to ride out his pleasure. However, as strong as this orgasm seemed to be, Leonardo couldn’t actually see him ejaculating. He could only see his cock jumping fruitlessly. Maybe he has no more jizz left? But it was no matter. Whatever it was he was experiencing, it seemed to rock him so hard that at the end of it he was nearly sobbing while his muscles shivered.
Leo swung his hips eagerly, chasing his own orgasm and it hit him like a shock of electricity.
“Fuck, Donnie!” He groaned as his tail twisted tightly against Donatello’s as he pumped his load into his brother’s twitching hole. When he was finished Leonardo slumped over slightly, feeling the lethargy of his post-orgasmic bliss hit him hard. Donnie was still whimpering softly as he struggled to gain control of himself. He was looking up at Leonardo with exhaustion but the earlier lust from before seemed to be gone. Trying to catch his breath Leonardo pulled out of him and immediately his cum spilled out of the shivering slit. Now that he was finished he could feel his dick getting softer and slowly slipping back into his own slit. He was hunched over slightly, watching as semen seeped out of his brother. His own brother? How did they get here? His eyes darted back and forth as the reality of what had just happened punched him in the gut. Both of them were silent, the only sounds in the room were soft breathing, the humming of computer fans and the soft distant beeping of something. It was Donatello who broke the silence first. He pushed himself up slowly, his eyes focused on Leonardo’s blank face. The impassive, vaguely annoyed expression was back on.
“We really screwed up.” He said hoarsely. Leo processed his words and shrugged, his face still was uncharacteristically blank. He felt a hand tentatively touch his own and Leonardo shook his head, his thousand yard stare breaking. “We need to clean up, Leo.”
“Yeah… yep… right.” He scooted off of the table and Donatello pushed himself off too and grimaced as cum dribbled off his tail. “You okay?”
“I… don’t know, actually.” Donatello answered plainly. He looked up to see Leo watching the steady drip of his cum with a contemplative frown.
“I’m lost too, dude.” Donatello watched him silently for a moment then looked over toward the corner of his lab and pointed.
“It’s not a big one, but I got a shower over there. I wasn’t able to install much, but it should work to clean up quickly.”
Leo nodded and followed his instructions, washing up quickly and thoroughly. Donatello followed as Leonardo sat on the table, waiting for him to finish up. S.H.E.L.L.D.O.N flew around cleaning up their various fluids and spraying the air, making the air smell more sterile and hospital-like. He wasn’t happy about it. He actually thought the dull musky smell of the room was comforting. He kinda liked smelling his and Donatello’s scents mixing together.
“Uh.” Leonardo looked up from the ground to see Donnie drying off. He threw the towel and before it could hit the ground, S.H.E.L.L.D.O.N swooped forward and picked it out of the air..
“Yeah?”
“I was thinking… we should pretend this never happened.”
“Uhm.” Leonardo felt a weird pang in his chest when he said that and frowned. But, it did happen. There was no getting away from that.
“It would be better if,” He continued. “If we just never talked about this ever again...honestly.”
“You sure about that?” He said it without thinking and Donatello’s eye twitched slightly before going back to a deadpan expression.
“Yeah, I’m sure. This can’t be a thing. It never could be a thing.” Feeling like he was punched in the gut, Leonardo looked away. He did not blame him though. Donatello was right. This wasn’t okay, right? It was best that they never did this ever again… right? This hurts… why does it hurt?
“Okay.” It was a simple acknowledgement and he scooted off the table and looked over at Donatello. He could have sworn he saw a hint of sadness in his eyes, even though it was brief.
“Uh… thank you, though… I should be okay now.”
“It’s gone?” Donatello nodded, rubbing his shoulder. Even as he stood near him, the rut scent and dissipated enough where it was hard to smell it over the cleaning chemicals S.H.E.L.L.D.O.N had used. Good… good for him… He clapped his hands together and put on a smile even though it physically hurt to do so.
“Yeah, no problem man. I just wanted to help you out you know.” He turned around and started walking toward the door. “I’ll see you tomorrow, think I’m heading to bed.”
“Yeah, same.”
“Cool, cool… night.”
He heard a little sigh behind him.
“Yeah, night.”