Chapter Text
Don’t get him wrong — Donatello loved his brothers. Even if Leo annoyed him to no end, Mikey clinged to him ceaselessly, and Raph enjoyed throwing team building curveballs now and then, Donnie still loved his brothers. But he really could’ve done without Raph’s latest team building exercise.
Reorganizing their teams was normally fine, he could give Raph that. But there was a reason that Raph and Donnie were usually not paired together, and it was the same reason why Mikey and Leo should never be left alone together for more than an hour.
Things tended to go awry when one of the two eldest brothers wasn’t watching, and likewise, Raph and Donnie were a less than efficient duo in battle without their energetic teammates.
“Now do you regret rushing in?” Donnie groused, back to back with Raph’s spiked shell. “This whole thing could have been avoided if you had just listened—”
“We don’t have time to fight, Donnie!” Raph huffed. “Can you spot ‘im yet?”
Donnie rolled his eyes beneath his goggles, but scanned their surroundings nonetheless. “I don’t see anything yet. You know, splitting up to spy on a villain with cloaking magic probably wasn’t the best idea—”
“I told you to can it,” Raph growled, and Donnie gave up the argument with a displeased hum. “‘m just glad we ended up finding ‘im before the others.”
“I can agree with you there.” Donnie shuddered. “I don’t want to think about Leo accidentally portalling him into the lair.”
“Or Mikey gettin’ the three of them wrapped up together,” Raph chuckled.
Donnie continued to scan the area for mystic signatures, hands flexing on his bo until—
“There he is— On your left, Raph!”
The snapper shifted just in time, raising an arm to block an invisible strike. The sharp impact of their assailant’s staff hitting Raph’s tonfa rang out, green sparks raining on them in its wake. Donnie winced, raising his guard as he watched the mystic signature begin to circle around them now. Raph was stiff against his back, and Donnie noted the scorch mark against his tonfa with a gulp.
“Where’s he at, Don?”
“He’s—”
Donnie’s words cut off as the figure rushed forward with a flare of mystic energy. Donnie had only a moment to prepare before green sparks were blinding him, a sharp impact against his bo forcing him into Raph’s shell. Donnie blinked quickly to clear his vision, but spots still filled his peripheral as he looked around, and of course the villain would think to blind him, he was the only one who could see—
A sharp cackling filled his ears, and Donnie had no time to react before he was clubbed right in the stomach.
“Donnie!”
Pain flared hot beneath his plastron and Donnie gasped, falling to one knee. By the time he managed to pinch one eye open, the yokai was long gone. Frustration flared, and Donnie growled as he realized there was no way they’d be tracking the guy down again tonight, perhaps even this week.
Raph had positioned himself protectively over Donnie, one large hand cupping his battle shell. It made him feel so small and useless and weak, and Donnie pushed his brother off with a huff as he got back on his feet.
“He’s gone, Raph,” Donnie sighed, pushing his goggles up. “I lost him.”
Raph huffed, shooting the alley one last scathing look, before turning tired eyes on him. “It wasn’t yer fault, Dee. He knew you were the only one who could see ‘im.”
“Then it’s my fault for not finding a way to make goggles for everyone.” Donnie kicked a pebble, crossing his arms over his sore plastron. “Come on, let’s go home.”
Raph stuck to Donnie’s side as they began the slow trek to the lair, hovering while trying to look like he wasn’t. Raph knew the mother hen routine would only piss him off more, but Donnie didn’t have the energy to shoo his brother off further.
The burn of the yokai’s strike hadn’t lessened over time, crawling up his chest and heating his face. Donnie shivered, the heat beneath his scales contrasting uncomfortably with the cool night air, and he hugged his sore stomach in the hopes it would go away.
“You alright, Dee? That was a pretty hard hit—”
“I’m fine, Raph.”
Raph grumbled, but kept out of it.
God, how could he have been such an idiot? Sure, he had warned Raph against splitting up due to the villain’s cloaking powers. And yes, he had told the snapper not to rush into an attack the moment they had spotted the guy, but… Had he really just let the yokai clobber him in the solar plexus and get away for nothing?
Donnie blinked, trying to rid the remaining spots from his vision. His feet dragged on the asphalt and he stumbled, Raph catching him by the back of the shell before he could fall.
“Don—”
“I said I’m fine,” Donnie snapped, pushing away with a flare of annoyance. Which quickly gave way to vertigo as the world slanted on its side, and Donnie collided with the wall as his head spun. “I’m fine, I just…”
Raph caught him again as Donnie began to slide down the wall, his brother’s worried face becoming a smear as his vision blurred.
“Donnie, what’s wrong? Did he get you with a spell?” Raph’s voice rose as he began to panic, and Donnie knew he should assure his brother quickly before he spiraled, but he found his tongue stuck to the roof of his mouth. “Come on, Dee, talk to me!”
Donnie fumbled, reaching for his goggles as Raph lowered him to sit on the ground. The lenses slid down, and Donnie looked over himself for some kind of answer— only for his breath to catch in his throat at the sight of green magic glowing from his midsection. Readouts filled his vision, and as Donnie forced his eyes to focus, dread filled him at the verdict.
“What? What is it?” Raph urged.
“It… seems I’ve been cursed,” Donnie managed, words slightly slurred as his body refused to cooperate.
“Cursed?!” Raph was definitely panicking now, but Donnie didn’t know how he could help when his own panic had begun to set in too. “Do— Do ya know what kind? Can we break it?”
Wordlessly, Donnie removed his goggles and held them out to Raph. His vision was fuzzy, but Raph was close enough now that he could see the deep chasm of his forehead as he gingerly went to peer through the lenses. Donnie felt the heat of the spell travel further with each breath, curling in his fingers and toes as Raph stiffened in front of him.
“This… this can’t be right,” Raph laughed humorlessly. “I mean, we can’t— I can’t… Fuck, Donnie.”
Donnie let his head thunk back into the wall as the pain in his gut began to pulse with the beat of his heart, coiling tighter as dread churned his stomach in tandem. Raph removed the goggles, staring down at him in horror, and all Donnie could manage was a weak smirk.
“Do you think he knew we were brothers when he cast it?” Donnie lilted, gravity beginning to pull him to the side.
Raph caught him again, the warmth of his calloused palm shooting through Donnie in a way that, if he were in his right mind, would have made him sick to feel. All he could do now was shiver as his mind drifted to thoughts of how large and strong Raph was, how easily it would be for him to pin Donnie down and—
“I can’t have sex with you, Dee,” Raph choked out, tears in his eyes. “I can’t, it’s just so…”
“Wrong?” Donnie laughed, his breaths coming shorter and shorter now. “‘s alright. I wouldn’t want to do this either.”
“But— But you’ll die if I don’t, right?” Raph’s hand was shaking where it still held Donnie upright. “There’s nothing else we can do? You couldn’t, I dunno, just—”
“Masturbation would not be sufficient, no.” Donnie struggled to gather his thoughts and put them into words, fighting against the heavy pull of the spell’s effects. “I should have… about thirty minutes before…” Donnie felt a bit like he was drowning, each breath harder to pull in, his lungs seeming to fill less each time, his heart hammering painfully beneath his plastron. He got lost to the sensation, then to the curling of an almost painful pressure in his gut, and next to the way Raph was staring at him, as if he were the most important thing in the world… “What… were we talking about?”
“Oh, Donnie,” Raph murmured. His other hand came to cup Donnie’s head, and wow, how had Donnie never appreciated just how gentle Raph could be? He had seen his brother punch through concrete walls before, and yet those same hands were now cradling him with such care. “I… I can’t lose you like this.”
“You can’t…” Donnie blinked, fighting off the spell’s heavy hold. “Raph wait, don’t… I don’t want…”
Raph’s tears spilled over, but he only smiled. “It’ll be okay, little bro. Raph’ll take good care of ya, promise.”
Donnie hummed, nervousness buzzing through him as Raph gently lowered him to the ground. Briefly, Donnie felt disgust at the feeling of dirty asphalt against his scales, disgust that they were still in a dark alley somewhere in Brooklyn so late at night that not even the drunks were stumbling around. He knew they wouldn’t make it back to the lair in time, he knew there was no point calling Leo to help and dragging the others into this mess. But as one of Raph’s hands dragged from Donnie’s shoulder down the length of his plastron, all other thoughts fled Donnie’s mind.
“‘s this okay?” Raph asked, clearly nervous, but trying to keep a calm facade.
“Y-Yes,” Donnie managed, heat burning in his cheeks as he watched Raph’s hand dip lower.
The hand came to rest at Donnie’s hip, but really, Raph’s palm was spread from his waist down to the top of his thigh from its size. Donnie swallowed, throat dry as he realized what was happening. The coil in his gut pulsed as Raph’s thumb rubbed against his plastron, and Donnie felt his leg fall open of its own accord.
Raph froze and Donnie shuddered, biting his lip as foreign sensations washed over him. His mind was clouded with the haze of his sudden want — no, need — for Raph to touch him. He felt as if his very atoms may shake apart if Raph didn’t, and as the seconds stretched on with Raph simply staring, horrified and pale, Donnie couldn’t stop the pained whine that rose from him at being denied.
The sound seemed to snap Raph back into action, and his hand continued its shaky descent to cup Donnie’s thigh. His hand was so large it could almost circle Donnie’s leg, and Donnie’s hips shifted weakly at the thought of Raph touching him more, of his fingers and tongue and—
Donnie stiffened as foreign images filled his mind, making his stomach churn sharply, and he gagged as his own sharp panic filled him again.
“Donnie? What’s wrong?”
Raph stiffened between his legs, hand freezing on his thigh. Hot tears blurred Donnie’s vision as lucidity briefly returned, and he covered his eyes in a desperate attempt to keep his dignity.
“I don’t want this!” Donnie sobbed. “I don’t want to d-die, but I—”
“I know, I know Donnie,” Raph shushed him, voice trembling. “I don’t wanna do this either, but I can’t let ya die. I’m not gonna let you die.”
Donnie nodded, sucking in shaking breaths. “I trust you. I j-just—” Donnie shuddered, heat rolling through him as the spell began to dull his thoughts again. “Don’t hurt me… more than you have to.”
“I won’t hurt you, Dee,” Raph sighed, his thumb rubbing circles into his thigh. “Raph’ll make this as painless as he can.”
Donnie hummed his acknowledgement, panic already subsiding as Raph began to move once more. Not seeing was somewhat better, but it amplified every brush of Raph’s hand as it finally dipped between his legs.
“Can I take these off?” Raph asked, his voice so soft it rumbled.
The sound of it sent another wave of heat rippling through Donnie, and he nodded sharply as he lifted his hips. Raph carefully removed both of their shorts, and Donnie bit back a whine while he waited for his hand to return. When it did, Donnie squeaked at the sudden feeling of a finger against his slit.
“Sorry! Sorry…” Raph sighed. “I’m, um, just gonna help stretch ya first, okay?”
Donnie nodded, and a moment later, he felt Raph begin to stroke against his slit. The sensation was strange, Raph’s callouses dragging against the scales and coaxing, until slowly, Donnie relaxed. The burn in his gut pulsed in time with the motion of Raph’s hand, and Donnie bit his lip in embarrassment as he heard how wet he was becoming.
“Yer doing great, Donnie,” Raph soothed.
Donnie’s breath caught in his throat as his arousal spiked at the praise. He couldn’t stop himself from rolling his hips into Raph’s next stroke, even as the snapper’s motions faltered with nerves after.
Suddenly, Donnie felt empty. Achingly so. It was such a strange sensation, and the swiftness of it made him whine, legs spreading further on their own as Raph continued his brutally slow pace.
It wasn’t enough. Donnie’s hands balled into fists, feet kicking as he tried and failed to find more stimulation. It wasn’t until Raph’s other hand pressed against his plastron that he stilled, only for the coil in his gut to tighten further at the action.
“Raph—” Donnie whined, lowering his arms to fix Raph with a desperate look. “I-I need more, Raph, please.”
“I…” Raph swallowed, fear flashing in his eyes. “I don’t know if your body can take it, Dee.”
“It needs to,” Donnie groaned, heat tearing through him with the intensity of a fever, sizzling his nerve endings with the threat of worse. “I-I give you permission. You have my consent.”
“Donnie, you can’t give consent right now!” Raph snapped, panicking. “When all this is over, how are you— how are we gonna even…” Raph teared up again, then quickly shook his head. “No, yer right. We have to do this. I have to— to give you what the spell wants. Right?”
Donnie licked his lips, having heard maybe half of Raph’s words. He was too busy staring at the snapper’s teeth, wondering how they might feel sinking into him. “R-Right, yeah…”
“I’m gonna, um, put my finger inside now,” Raph managed, averting his gaze. “Tell me if ya need me to stop.”
Donnie nodded, and then all he could focus on was the feeling of being stretched open wide. He keened, legs spreading further as Raph pushed his finger inside in a slow, deliberate press. God, Raph was so much bigger than Donnie. He had never been much for penetration, but suddenly, Donnie wondered why he had never given it much of a try. The burn was indescribable, a mix of pain and pleasure that had him jerking his hips. He wasn’t sure if he was trying to force Raph deeper or escape the intense sensation, but either way, the snapper didn’t let up.
It felt like forever until Raph’s knuckles met his slit, and Donnie struggled to catch his breath as his heart raced. Then Raph bent his finger up, and Donnie couldn’t stop the moan that tumbled from his lips. Raph stilled, and Donnie sunk his teeth into his lip, muffling the pathetic whine that followed.
“Does it feel good?” Raph asked nervously.
“Yes— No?” Donnie shuddered, heat rising once more as they paused. “It’s— Hard to say. The spell makes it good.”
Raph nodded, forcing a weak smile. “I’m glad it doesn’t hurt.”
“M-Me too,” Donnie gasped, rolling his hips as Raph remained still within him. “But if you don’t start moving, it will hurt.”
Raph’s eyes widened, and slowly, he began to flex his finger again. The tension melted from Donnie’s muscles as the spell was appeased, giving way to the pressure and odd pleasure of being filled. He couldn’t stop the soft sounds that came from him as Raph worked up a rhythm, steadily working Donnie until his finger could slip in and out with ease.
“What do ya think the spell wants?” Raph asked.
“F-Full consummation, I’d assume,” Donnie hummed. When Raph gave him a confused look, Donnie sighed. “Penetrative sex, Raph.”
“O-Oh,” Raph flushed, turning his gaze back to Donnie’s slit. Raph winced at the sight, averting his gaze back to Donnie’s face. “I, uh, hate to say this Dee, but I really don’t think that can happen.”
Donnie felt panic rise in him, and he couldn’t tell if it was his or the spell’s doing this time. “You have to, please, i-it won’t work if you don’t and I-I’ll die for nothing and—”
“Donnie, hey, it’s alright,” Raph quickly assured, his free hand shifting to cup Donnie’s cheek. He melted into the caress, panic fading just as fast as it came. “Guess we’ll find out if you can handle it together…”
Raph’s second finger nudged against his slit, and Donnie groaned as the burn of the stretch returned. This time it wasn’t nearly as pleasant, and Donnie whined at the feeling of being stretched far beyond his normal limits. Raph’s preparations had helped, but Donnie wasn’t nearly wet enough, his body just not welcoming the stimulation with his mind torn between disgust and spell-induced need.
The longer Raph touched him, the more intimate the act became and the easier it was to watch, Donnie found. His fear was ebbing, giving way to the trust he had for his older brother — trust he knew was being tested as Raph began to finger fuck him in earnest.
“Ah— Raph!” Donnie moaned, the sharp coil in his gut tensing, pressing down. “S-Stop! I’m—”
Raph’s eyes widened, and he quickly pulled out. Donnie shuddered as his dick dropped, following Raph’s fingers and twitching in the cold air. Donnie’s hips stuttered, the spell screaming as Raph’s fingers disappeared — only for the rising heat to quell as Raph’s hand wrapped around his length.
“Ohh fuck,” Donnie slurred, turning to hide his face in Raph’s palm. “R-Raph…”
“I’ve got you, Dee. Don’t worry,” Raph rumbled, the sound soothing him in an instant. “Wow, ya sure look different than I do.”
Donnie peeked out, finding Raph staring at his cock with surprise. The snapper hesitantly rubbed a thumb over Donnie’s glans, and he shuddered, flexing them in response. Raph let out a stilted laugh as Donnie wrapped his glans around his thumb. The firm pressure and warmth of Raph’s hand around his length was wonderful, helping soothe the ache in his core with ease, and Donnie let out a whimper as his dick disappeared in Raph’s fist.
If Donnie was that much smaller than Raph, he wondered just how huge the snapper’s dick was. The thought was foreign and unwelcome, and it sent a shiver down his spine as Donnie realized he was likely going to find out.
Raph gave Donnie’s dick a few experimental tugs, and Donnie’s eyes rolled back as pleasure spiked through him. The coil in his gut was tensing again, an insistent burn that Raph’s touches only fueled. But even as the snapper worked up a steady pace, Donnie realized that coil was never going to reach its apex like this. He was shuddering with stimulation, bordering on being too much, and yet he couldn’t ignore the yawning emptiness inside him that demanded attention far more.
“R-Raph, stop…” Donnie groaned. “It’s not enough.”
“Oh.” Raph stilled, guilty and fearful all over again. “So I really have to…”
“Yes,” Donnie sighed. “I-I’m sorry.”
“It’s not yer fault, Dee,” Raph assured, removing his hand from Donnie’s aching length. “I just… I don’t know if I can drop like this.”
Something in Donnie stirred at that, and his vision sharpened as he found the strength to bolt upright. His body moved far faster than Donnie could keep up with, and Raph was likewise stunned as he climbed into the snapper’s lap. Before Donnie could get a reign on his limbs, he was dragging Raph down by the jaw, pressing feverish lips against the snapper’s own.
Startled, Raph began to pull away, and Donnie let out a panicked chirp that made the snapper freeze. Slowly, Raph’s arms came to circle Donnie, gently pulling him closer as he allowed the kiss. It was awkward and tense and Donnie felt like he was watching his body move from the outside — until Raph’s hand cupped his head and tilted it, slotting into the kiss with gentle precision. All at once, Donnie was rocked back into his body, melting against Raph’s plastron as he was kissed deep in return.
Raph’s tongue was hot as it pressed into his mouth, and Donnie moaned around it as Raph’s hold on him grew tighter. The snapper held him close with one arm while the other trailed down, fingers dipping back into Donnie’s dripping slit. Donnie groaned at the feeling of being filled again, shifting his hips and bouncing on Raph’s fingers as they worked him open.
Donnie had no idea how any of this worked, truth be told. Outside of porn, which he rarely found appealing to watch, he had no experience with sex. Somehow, none of that mattered as the spell guided his hands down, rubbing against Raph’s plastron as his knee slotted between massive thighs. Raph groaned into the kiss as Donnie’s body positioned itself just right, and Donnie felt an excited shiver roll through him as he succeeded in making Raph feel good.
Their kiss turned desperate as Raph bucked his hips into Donnie’s touch, even as his brows pinched in distress. Donnie pushed his own panic and discomfort down, focusing on the one thing he now had control over — making this horrific experience as good as possible for his brother.
“P-Please,” Donnie gasped between kisses. “I need you inside me.”
“Oh fuck, Donnie,” Raph groaned, shuddering against him. “A-Are you sure?”
“Yes, yes,” Donnie nodded frantically, desperately palming against Raph’s slit. “Please, Raphie!”
Raph churred, the deep rumble making Donnie’s arousal throb insistently, and Donnie felt something pressing against his fingertips. He drew his hand back, watching with aroused fascination as Raph dropped between them. But as the seconds ticked by and Raph just kept dropping, Donnie’s arousal was drowned out by fear.
There was no fucking way that would fit inside him.
Raph shuddered as his dick brushed against Donnie’s plastron, curving up to press against Donnie’s own twitching cock. Donnie swallowed, throat painfully dry, and Raph finally met his eyes with the same mix of pained arousal Donnie was feeling now.
“We can find another way—”
“No.” Donnie sucked in a deep breath, bracing himself as the heat began to build within him again. “This is the only way.”
Raph nodded, crooking his fingers inside Donnie before slowly pulling out. Donnie braced himself against Raph’s shoulders, shivering with equal measures fear and arousal as he watched his brother stroke himself between them. Raph’s fist couldn’t fully circle his own length at its base, and Donnie couldn’t help but compare its size to his own leg. Raph’s dick was undeniably large, with a spade head and ridges along its underside. He had no idea how much of it the spell would expect him to take, but Donnie wasn’t sure he could even manage the head of it. He didn’t normally have penetrative sex, his body wasn’t accustomed to it, and his hips were already hurting from just Raph’s fingers.
If he didn’t die from the curse, he might very well die from Raph fucking him, and that was almost worse. Almost.
“Ready?” Raph murmured, and Donnie could only nod in response.
Raph helped him shift so he was straddling his lap, knees braced on Raph’s thighs, barely enough space for Donnie to lift himself over Raph’s cock. And then its head was pressing against Donnie’s slit, and it was all he could do to hold in a whimper as he lowered onto it.
The stretch was nothing but painful. It felt like he was being torn in two, and Donnie squeezed his eyes shut as Raph’s shaking hands guided him down. He shifted his legs, trembling almost too hard to support his weight already, struggling to find a position that would allow Raph to fit.
The heat was rising, burning in his cheeks, making him incredibly dizzy. His breath was shallow again, vision swimming. Donnie realized he might pass out if he couldn’t get Raph inside, and the dull panic of that thought finally forced his hand.
He reached down, positioning Raph’s length until, with a sharp gasp, the head slipped inside.
“Ghh—” Raph stiffened over him, gripping Donnie closer.
Donnie could only whimper and groan at the feeling. It was so much more intense than Raph’s fingers — the pressure was firm and unrelenting, pressing against his insides painfully tight. Now that the head was inside, Donnie wasn’t sure he could pull it out, his slit too narrow for its size as it was. The coil in his gut pulsed with need, reminding him he was still empty just a few inches deeper, and Donnie rested his forehead against Raph’s shoulder as his body adjusted to the intrusion.
“H-How’re you holdin’ up?” Raph rumbled.
“Been better,” Donnie managed. He shifted his hips in a small circle, pain spiking again and making him wince. “I apologize for doubting you… when you said I wouldn’t be able to handle it.”
“Yer doin’ a great job, Dee,” Raph hummed tightly, rubbing Donnie’s back. “Takin’ it real good…”
Donnie flushed, the coil in his belly tightening, and oh. That felt… good. Actually good, for once.
“R-Really?” Donnie asked in a bit of a daze. He shifted his hips again, this time finding the pain had lessened, Raph spearing deeper inside him. “Hhh…”
“So good, Donnie,” Raph groaned. One hand trailed down, coming to grip Donnie’s leaking cock once more. “Keep doin’ that, just keep…”
Donnie nodded, breaths coming short as he sank lower, and lower. The first ridge pressed against his slit, and Donnie moaned as he felt that momentary painful stretch give way to a wave of pleasure. With each inch he sank lower, each word of praise from Raph and shift of his hand over Donnie’s flexing glans, he could feel his mind clouding with more of that good feeling. Logically, he knew he should have come a long time ago — probably multiple times by now, given the amount of stimulation. But with every inch closer he got to taking Raph inside him, Donnie could feel the coil of pleasure that promised release growing tighter, in tandem with the promise of the curse breaking.
Raph was so deep inside him now, Donnie swore he could feel his guts rearranging to fit him. The head of Raph’s cock was so deep, it pressed into the underside of Donnie’s plastron with an ache that demanded relief. He whined as the heat flared in warning, scrambling to palm at his plastron until he realized the problem. Raph was so large that Donnie could feel a bulge beneath his scales, the end of which couldn’t press beyond his plastron.
“Dee, what’s up?” Raph urged, his hips stuttering as he shifted. Donnie groaned as Raph’s movement pressed his cock deeper, harder against the edge of his plastron. “Oh, ow, what is that?”
“G-Give me a sec,” Donnie mumbled, fumbling for purchase.
His fingers shook, but he managed to hook them beneath his plastron, pulling up until—
“Fuck!” Donnie gasped, louder than he’d allowed himself before, as Raph sank two inches deeper in one go. “Sweet Galileo, oh my god.”
“Donnie—” Raph shuddered, gripping Donnie even tighter, and he knew he would have bruises to show for it but at this point he didn’t care, he just needed more.
Desperation forced his hips to move, and Donnie found himself muffling moans and sobs into Raph’s chest as the curse finally got what it wanted. Donnie was sick with it, stomach churning even as arousal pulsed sharp in his gut with every thrust. With every lift of his hips, Donnie could feel the burn of his slit stretching further and further, more and more of Raph disappearing into him with each pass.
For his part, Raph looked absolutely pained. His eyes were screwed shut, holding Donnie close and pumping his cock with sharp motions as Donnie rode him. His whole body trembled, every muscle tensed, and Donnie wondered if it was self-control or pleasure causing it.
Donnie kept one hand pressed against his plastron, the other braced against Raph’s shoulder for leverage as he bounced. He could feel both inside and out as Raph sank deeper, his plastron distended from the sheer size of Raph. It wasn’t until Donnie felt Raph’s slit pressed against his that he realized he had succeeded — that despite everything, he had actually managed to take all of Raph’s monstrous length inside him.
Donnie barely had a moment to appreciate just how stuffed he felt before Raph’s grip on him shifted. In a flash, Donnie found his back pressed into the concrete once more, his legs thrown up as Raph settled between them.
His eyes rolled back as pain and pleasure spiked, the new angle so much deeper — and then Raph was fucking into him like his life depended on it. And really, it did.
“Raph! Oh, fuck, Raph!” Donnie screamed himself hoarse, head spinning and ears ringing as his body protested every single thrust. “Don’t— Stop— Agh!”
“I’m sorry, ‘m so sorry,” Raph sobbed, head tucked into Donnie’s shoulder. “Yer doin’ so good Donnie, just a little bit more, come on…”
Donnie could feel it, that pressure coiling deep in him once more. Rising and falling with every thrust in and out, each of Raph’s ridges dragging against a bud of nerves Donnie had never reached before and scrambling his brain. The slide of Raph inside of him felt perfect now, like he had drilled a Raph-shaped hole into Donnie’s being that only he could fill. A space, a yawning emptiness that, once the snapper had finished with him, Donnie knew he would never be able to fill again.
The coil of his arousal reached a fever pitch, sizzling along every nerve ending. His head thrown back, toes curled, eyes pinched shut and every wretched noise forced out of him by Raph’s brutal thrusts. All Donnie could do was throw an arm over his eyes and grip Raph’s mask tails as he was ruthlessly fucked, his walls fluttering with his incoming orgasm, almost afraid of how intense it might be.
Then Raph buried himself to the hilt, teeth catching on Donnie’s battle shell strap and biting hard. Donnie’s eyes flew open as a new heat flooded his insides, burning like liquid fire, heavy and perfect and—
Every inch of him tensed as his orgasm hit like a freight train, and Donnie couldn’t make a sound. He felt every ridge of Raph inside him with new intensity as his muscles clenched, and his vision whited out to nothing as he peaked and peaked and peaked.
“Fuck Donnie!” Raph moaned brokenly.
Donnie reached the precipice, and he felt the bare thread of the curse snap as he hurtled over the other side.
He lasted all of three seconds. Three seconds filled with mind numbing pleasure, his entire body on fire, every nerve ending alight unlike anything he had ever felt before.
The next thing Donnie knew, he was being shaken awake by a frantic, crying Raph.
Donnie groaned, head lolling bonelessly, and Raph stopped shaking him with a relieved churr. Donnie managed a tired one in return, unable to find the strength to do much else as Raph cradled him in his lap.
“Donnie? Are you in there?”
Donnie hummed, and Raph sighed shakily.
“Oh thank god. I thought you might’ve… I thought I…” Raph’s voice choked off, and Donnie blearily opened his eyes to his brother’s distraught expression. “’m so glad you’re not dead.”
“Same,” Donnie croaked, wincing as his throat throbbed.
“Don’t talk,” Raph shushed him. “And… maybe don’t move either.”
Donnie nodded, scanning his body as his mind filtered back to him. He felt like shit, to put it bluntly, but the aftershocks that were shivering through him helped somewhat. His slit and insides were on fire, a burning path marking Raph’s time inside him. His vision and mind were still hazy, but he noted with relief that the unwelcome heat in his gut had long passed, giving way to the dull throb of the original injury that had cursed him.
Crisis averted, Donnie found his adrenaline quickly fading, making it near impossible to stay conscious. Raph was still checking him over gently, guilt written all over his face as his hands ghosted over the bruises he’d left on his arms and thighs. When Raph shifted him up, Donnie felt a wave of disgust as he could see his puffy slit between his legs, leaking a steady stream of cooling fluids and blood. Raph froze as he followed Donnie’s gaze, breath stuttering, and Donnie gathered his strength.
He reached up, guiding Raph’s head away until their eyes met. Donnie’s stomach dropped at the dread and sorrow on his older brother’s face, but he quickly pushed down his own feelings.
“Not your fault,” Donnie signed. Raph’s face crumpled, tears springing to his eyes again as he shook his head, but Donnie quickly reiterated. “Not your fault, Raph. We had to. You saved me. Thank—”
“Don’t—” Raph choked on a sob, placing a hand over Donnie’s. “Don’t thank me. Please.”
Donnie sighed, then nodded.
“Let’s get you home,” Raph murmured after another moment.
Raph gingerly lifted him, holding Donnie bridal style, and he couldn’t find it in himself to complain. He didn’t have the strength to hold onto Raph’s shell for a normal ride, and something about the position just felt better after what they’d been through. It was… intimate. And while Donnie’s stomach churned at the thought, he couldn’t suppress the flutter in his chest at the care Raph was taking with him now.
“I’m sorry,” Donnie signed. “I should’ve had my guard up better.”
“You couldn’t have done anything differently, Dee, so stop apologizing.” Raph held him closer, and Donnie relaxed into Raph’s wide plastron. “I’m just glad you’re alive.”
Donnie nodded, resisting the urge to thank him again. Perhaps later, Raph would be comfortable hearing it, but Donnie could understand why he didn’t want to now. Even if Raph had saved his life, neither of them had wanted the cure.
Donnie felt guilt weigh heavy in his chest as he realized the memory of Raph fucking him wasn’t bringing him the disgust it should. Anxiety began to buzz inside him, only growing as he replayed each second; the kiss, the touches, the way Raph’s praise had made him feel—
“I’m so sorry, Donnie,” Raph murmured, and Donnie looked up to find Raph shedding silent tears as he kept his gaze trained ahead. “I just snapped there for a second and I— I hurt you when I promised I wouldn’t, and—”
Donnie pressed a hand over Raph’s mouth, fixing him with a glare. “Not your fault. You had to. It’s what the curse demanded.”
“B-But I could’ve been gentler—”
“You didn’t hurt me,” Donnie signed, growing frustrated. “I am alive. I am fine. Yes, I am sore, but there was no way you were going to be able to fuck me without hurting me.”
Raph shut up quickly after that, and Donnie felt nothing but guilt for the rest of the trip home. Thankfully, their brothers were still out when they made it back, giving Raph plenty of time to sneak Donnie through the halls and into the bathroom to clean up. After running the bath and settling Donnie into the tub, the snapper had quickly disappeared, leaving Donnie to stew in his horrific feelings.
He knew he should feel disgusted, ashamed, guilty, and a slew of other unpleasant things in the wake of what was undoubtedly a traumatic experience… and yet, all Donnie could find it in himself to feel was relief that it had been Raph who had helped him through it. There was no one Donnie trusted more than his big brother — in fact, he didn’t even want to imagine how badly this could have gone if Leo or Mikey had been the one with him at the time.
For some reason, the thought of having sex with his younger two brothers still disgusted him, but thinking of Raph having done it… didn’t. Where there should have been shame, Donnie only felt embarrassed. He knew Raph hadn’t enjoyed it, but still, the feeling of Raph coming inside of him wouldn’t stop replaying in his mind. Raph had been forced into the situation just like Donnie had been, and yet, both of them had still managed to find pleasure in it.
It should have made him sick, but it didn’t.
When Raph returned a few minutes later with a towel, Donnie had finally worked up the nerve to tell him — but the snapper beat him to it.
“I don’t think we should tell anyone,” Raph sighed, shifting awkwardly by the door. “What happened was wrong, and I don’t want it changing the way any of them see us.”
Donnie nodded — he agreed. And yet…
“I-I know ya won’t be able to forget about it. I know I can’t,” Raph chuckled weakly. “But could we at least try to pretend like it didn’t happen?”
Ah, and there it was. Donnie’s guilt and dread weighed heavy in him, too heavy to name. He couldn’t deny Raph this, he knew what he was feeling was wrong and it was only logical that Raph would rather forget about the whole thing and try to move on. Donnie knew it would be stupid to wish for anything else, and he shoved his own traitorous feelings down as such.
Reluctantly, he nodded.
Raph sighed, offering a sad smile. “I’m real sorry about everything, Dee. But I’m so glad yer alright.”
“Me too,” Donnie signed. Then, “I’ll see you tomorrow.”
“Yeah. Right.” Raph hesitated by the door, sending Donnie one last unreadable look. “Don’t feel like you can’t come talk to me if ya need to, Dee. Alright?”
Hope flared, and Donnie smiled.
“See ya tomorrow, little bro.” Raph waved, and then he was gone.
Donnie sank low in the tub, staring at the ceiling and willing it all to make sense. His body ached with a vengeance, and yet, his heart hurt worse. His hand drifted down, palming between his legs, wincing at his sore slit.
Slowly, Donnie slipped a finger inside. Then another.
It wasn’t enough.
Donnie shuddered as he realized he would never be able to forget the feeling of Raph inside of him
He wouldn’t want to even if he could.