“I said don't come in!”
“Mikey... It's my room.”

Donnie was glad that the others had gone to bed by now. He felt a little ridiculous talking to his brother, his mate, through the door of his own room.
He had been here for a few minutes already and it seemed his orange banded mate wouldn't be swayed so easily into opening the door.
“Please, talk to me Mikey.”
Donnie could only hear the erratic sound of someone pacing the floor on the other side. His brows furrowed in worry. Mikey must be pretty worked up if he bypassed his usual dramatics to instead pace in silence.
“You said you had a surprise for tonight. I take it things aren't going as well as you had planned?” Donnie tried to get him to open up.

The pacing stopped. After a beat, a thud resonated from the other side of the door. He heard the muffled, uncharacteristically gloomy voice of his young brother.
“No...”
He was answering at least, that was good. He heard the noise of a shell scraping on the other side of the door, most likely Mikey letting himself drop to the floor. But he didn't hear anything else after that.
Donnie combed through his memory of the evening, trying to figure out what he was missing that had caused his mate to get dispirited seemingly out of nowhere.

Mikey had planned a whole thing for the evening. It was their five-month anniversary and Mikey had been celebrating each milestone of their relationship.
He had been gone a good chunk of the afternoon to buy groceries for dinner. Then he had taken over the kitchen to make Donnie’s favourite recipes and together, they had made themselves comfortable with everybody in front of the TV to enjoy the meal. Or they had tried. The two of them had been more interested in making out on the couch once everyone had called quits. Or was it what had caused the others to leave? Donnie couldn't quite remember, he had been justifiably distracted at the time.
The memory of soft, plump skin beneath his fingers snaked its way into Donnie's mind, causing a pleasurable shiver to run down his spine. Don exhaled slowly, trying to ground himself and focus.
Before things had gotten too heated on the couch, Mikey had stopped him, a glint in his eyes. He had told Donnie he had a special surprise planned and had asked his older mate to come to his room in ten minutes. He had then kissed him soundly on the lips one last time and bolted out of the living room. Those had to have been the longest ten minutes of Donnie's life.

And now here they were. The important thing was, whatever Mikey had planned had him really eager. Donnie's chest tightened knowing his lover was now feeling so dejected, and he was locked on the other side of this stupid door. How was he supposed to help?
"Mikey, sweetheart. I'm sure that between you and me, we can figure out a way to fix whatever is bothering you. But I can't help from here." Donnie said softly. "Can you let me in, please?"
Silence stretched for a few uncomfortable seconds. Donnie was getting increasingly worried until he heard shifting and the sound of the door being unlocked. Donnie fumbled with the handle, took a deep breath, and gently pushed the door open before closing it behind him.

As he locked the door from behind his back, Donnie's eyes quickly scanned the space, searching for anything that could have caused his mate such sudden distress.
He noticed nice scented candles peppered around the room, enveloping the space in a warm, fuzzy glow. There was a lovely nest on the floor made of all their favourite pillows and blankets. It was a cozy, romantic sight. Mikey had clearly put effort into all this, and the genius was confused but glad to note that nothing seemed destroyed or ruined.
His eyes finally found his mate, standing in a corner with his back to the room, facing the salvaged mirror Donnie had set up there.

Donnie had to do a double take when Mikey turned around, his mouth had to be gaping but his own body felt too foreign to be certain. He considered pinching himself but he wasn't sure his hands would have responded.
In front of him, a few feet away, stood Michelangelo, draped in the most delicate silk and lace he had ever seen in his sewer-bound life.
The lingerie looked brand new, a deep plum colour. An intricate pattern of straps wrapped itself tightly around his body, curving around his chest and seamlessly cascading down to his hips, nestling itself in between his strong legs in a teasing dash of flowery lace. The view was only enhanced by two ribbons of silk, one on each side of a matching garter belt that held sheer, dark, patterned stockings that shimmered from the candlelight.
The set was well crafted, and beautifully worn, Donatello thought. It looked leagues above the cheap, dirty underwears that would find their way into the sewers.
With impossible difficulty, Donatello found the strength to close his mouth. The fire that had begun dancing on his face, and making its way down south, subsided when he took notice of the way his mate was holding himself. Michelangelo was hunched over, his arms stiff at his sides with his hands balled up. He looked about ready to cry, if from frustration or sadness Donnie couldn't say. Seeing from Mikey's slightly red eyes, he already had earlier.

Michelangelo wasn't looking at him, and that snapped Donatello out of the rest of his trance. He approached Mikey, slowly rubbing his arms up and down in a comforting manner, leaving him some room so he didn't feel cornered.
“Hey, Mikey... What's wrong, sweetheart?”. Donnie said, trying to catch Mikey's eyes.
Mikey huffed and rubbed his eyes frantically before finally looking at him, his frustration now evident.
“What’s wrong is, I’ve been planning this whole thing for days. I even recruited April to help, and I still managed to mess things up! Of course the delivery man had trouble finding the address.
“Sure, maybe I hadn’t thought things through with having the package delivered straight to the sewers to gain time, and maybe I should have gotten it delivered to April's place first as usual. But I mean, it always works for pizza, right?”
Was he... supposed to answer?
“I know, right! Unbelievable.” Mikey continued, unstoppable. “So I had to reschedule the delivery for today and clear some time this afternoon to not only get my package from April's, but also to grab some groceries for tonight. And with everything, I had zero time to try it on. And guess what, it doesn’t fit. I went through all this planning and it still doesn’t fit!”

Mikey was fuming with tears in his eyes, face red. He looked straight at Donnie’s confused but sympathetic face, his breathing laboured. As quick as his bout of anger had appeared, it fizzled out, leaving him deflated.
“The matching lingerie set. None of it fits and now I ruined the end of our evening.”
Donnie noted that Mikey's dramatic flair was back, which was a good sign, but he didn’t mention it because his young mate looked genuinely upset.

He took in the ensemble one more time and noticed for the first time how the panties looked oh so small and barely covered Mikey’s slit, the way they hugged his tantalizing hips. Same for the stockings and the lacy bra's various straps, squeezing his generous flesh. Donnie’s mouth was watering.
It took a herculean effort for Donnie to unglue his eyes from the expenses of skin tempting him. He took Mikey's hands in his and made sure to catch his baby brother’s gaze.
“Sweetheart, baby. You didn’t ruin anything. Believe me when I say that I’ve never seen anything being worn more perfectly.” Donnie accentuated his sentence with a chaste, almost reverent kiss to the top of Mikey’s hands.
He slowly spun Mikey around, never letting go of his hands, like they were dancing to a silent melody. A low chuckle escaped Mikey when they were turned around to face the mirror, Donnie pressing himself against his shell, holding him close and rocking them slowly in place.
“I love how it accentuates your curves” Donnie continued, peppering Mikey’s face with kisses, spying the beginning of a smile on his lover’s face. Not good enough. "And the colours complement your skin so well. You obviously spent a lot of time searching for the best one for you.”
“ … I did.” Mikey said, unusually bashful at the attention he was getting.
“See?” Donnie moved his lips down to Mikey's collarbone, resuming his butterfly kisses. “And you made an excellent choice. Look at you, so gorgeous. I know I can’t look away.”

He continued his compliments, wanting to show his mate how utterly breathtaking he was to him. Mikey was starting to relax under Donnie’s careful touch and earnest praise, so Donnie continued his ministrations, squeezing as much of the soft green skin as he could, getting lower and lower.
Mikey mewled Donnie's name when his fingers found their ways to the lace of his panties. Donnie looked up, interrupting his little monologue, and the already warm skin of his cheeks felt on fire when he caught in the mirror how affected Mikey was getting. His little brother was short of breath and flushed, looking at the genius’ reflection with half hooded eyes. He looked downright irresistible dressed like this.
Donnie couldn't resist any longer and captured Mikey’s mouth with an urgency he had rarely felt before. He gathered Mikey in his arms so he could face him again, but caught his foot on the edge of the blanket pile and they tumbled side by side on the nest Mikey had made, limbs entangled, drowning in soft fabric and fluffy pillows. They both froze for a second with eyes wide open, looking at each other, before erupting into uncontrollable laughter.

They stayed like that for a while, laughing harder every time they tried to stop. When they both got their breathing under control, Mikey flipped them sideways so he was straddling Donnie’s hips. He leaned forward, his hands and eyes glued to Donnie’s chest.
“You like it that much, huh?” Mikey hesitated, from his position, his questioning eyes shifting to find Donnie's.
Donnie gulped, his eyes caught between Mikey’s baby blues and his tantalizingly close hips. He could only utter a breathless “yeah” as his own hands seemed to have a life of their own. They rested on Mikey's full hips, playing with the lacy fabric of his panties. His right hand teased its way closer to the gap between his small mate’s thighs, before resting fully on his barely covered slit.
Donnie marveled at the shudder that coursed through Mikey’s body at the bold touch. He felt the supple mound press against his hand, beckoning him closer. The heat radiating from it caused a small gurgled whine to escape from Donnie’s dry throat, echoed by Mikey. Encouraged in his actions, Donnie ran his hand along the slit, steadily applying more pressure, curling his fingers at random intervals to further explore the parting folds over the damp fabric, but never fully penetrating.
Donnie could feel the tip of his lover’s cock starting to peek through his slit. He inwardly smirked and swirled his thumb over the exposed nub until he felt it push against his finger. Mikey dropped down with Donnie’s name on his lips, his erect cock tenting his panties in an erotic display before it slipped on the now soaked fabric, leaving it halfway exposed from the top of the underwear, flat against Mikey’s stomach.

The young genius then slipped his fingers inside the garment, finally breaching Mikey with his finger, giving him a taste of what he’d been wanting. Donnie marvelled at how slippery his slit was, hypnotized by the way his probing finger caused more clear fluid to seep through the fabric of the panties, how it trickled down Mikey’s thighs and pooled on his own painfully bulging lower plastron.

Suddenly Mikey chased Donnie's hand away and brought his backside down flush against Donnie's lower regions, grinding against him, spreading his slick juices all over his bulge.
“Ah, Mikey…” Donnie trailed off. The wonderful feeling of silk and wet, soft warmth; the look of Mikey's chest bouncing slightly in his bra, that was all it took for Donnie to drop down, trapped right against Mikey's slit and his own plastron, making them both gasp.
“Yes. God, you’re so warm against me.” Mikey continued to rub his slit against Donnie's member with more desperation until they were both panting.
Donnie's hands got busy kneading Mikey's ass, bringing his own hips up to be as close as he could to Mikey's core.
Mikey felt tiny shivers run along his body each time Donnie’s cock caught on the edge of his entrance, not quite going in because of the now suddenly annoying lingerie. He made a move to remove the offending garter belt and panties that were in the way but Donnie had captured his wrist before he could blink, startling them both. They looked at one other, Donnie as dumbfounded as Mikey because he hadn’t consciously made a move. It had just happened. All he knew was that the lingerie was really turning him on. Donnie felt his cheeks grow even more red.
“I… kinda, really want you to keep wearing it.” God he was such a pervert. “Please.”

Mikey snorted in good humour but complied anyway, happy that his little surprise hit the mark in the end. He lifted his hips and Donnie watched as a string of moisture still connecting him to his brother snapped. His eyes followed Mikey’s hand as he brought his fingers to his open mouth, rolling them over and under his tongue, coating them with saliva in a sinful dance. The fire in his eyes was captivating, he knew the effect he had on the genius and he was making the most of it.
When his fingers were dripping with saliva, Mikey then made a show of leisurely travelling his hand back down, leaning back. Donnie felt as if he was under a spell as he watched those fingers graze the part at the centre of Mikey’s plastron, tantalizingly slow, before settling on his engorged, flushed slit. He moved the soaking wet panties aside and finally grabbed Donnie's rigid member, giving it a few good squeezes.
Donnie’s head went flying up as Mikey played with his cock, stroking it in ways that made it harder to breathe for the turtle. It took Donnie all his willpower to open his eyes once more when he felt that expert hand guide the tip of his member to slowly breach Mikey's heat. He couldn't detach his eyes from his cock disappearing inside his younger brother’s slit like this, finally easing the aching they both felt.
The feeling was indescribable, Donnie could never get tired of it. He vaguely wondered why they didn’t play with their slits like that more often. The way Mikey's insides were burning, hugging him so tightly; it was like he never wanted to let go. It lit a fire in his heart, and in his groin if he felt particularly crude. His hips slammed up of their own volition until Mikey swallowed the last few inches of his hard member.
“Donnie!” Mikey gasped breathlessly. He leaned forward at the uncharacteristically rough treatment.

Mikey didn’t lose any time as he set up a slow rhythm, up and down Donnie's shaft. He was trying to go faster but it was clearly not enough for any of them. The slapping noises echoed through the room as Mikey’s thighs twitched and trembled underneath Donnie's fingers.
Donnie didn't know if it was the rapt expression on Mikey's face, the fabric hugging his plump flesh, or the little frustrated moans that escaped Mikey's mouth at not being able to hit the spot he so desperately wanted - probably a mix of everything - but Donnie felt a deep animalistic hunger take over himself. He flipped them until Mikey was underneath him and locked Mikey in a bruising kiss, invading his mouth with his starving tongue. Mikey automatically brought his arms around Donnie's neck and Donnie set a more punishing rhythm, making Mikey scream in his mouth, his eyes rolling back in his head before shutting tightly.
Donnie leaned back to admire how his cock forced more juices to flow out of Mikey's hole, the view so erotic a deep churr ripped through his throat as Mikey's head was trashing side to side and he held on the blanket beneath him for dear life.
He was holding Mikey's legs so tight as he fucked into his baby brother, mesmerized by the way the stockings squeezed his legs, and how the way he rammed into him caused Mikey's chest to continuously bounce in the confines of his bra. He had those thick thighs in a vice and it was sure to leave marks, and that too was arousing in Donnie's pleasure fogged mind.
Mikey’s blissful chirps and churrs pushed him to go faster until he hit that special place that made Mikey's eyes cross and his whole body spasm. He continued stabbing the sensitive walls that made Mikey - his mate - cry out his name and his alone.

Donnie could feel Mikey's orgasm as it hit him, his back arching off of the floor, his eyes closing and mouth opening in a melody of unintelligible, churr broken moans and gasps. He could feel Mikey's juices gushing out as his core spasmed around his thick member, trying to pull him in even deeper so he could stay sheathed and paint him with his semen.
Donnie only resisted for a few more brutal thrusts, drawing out Mikey's orgasm even more as his brother pleaded for whatever he could give him. Donnie buried himself as deep as he could, hitting Mikey's spot dead on one last time and emptying himself deeper than he ever had inside his baby brother. He relished in the slick, hot vice, and in the feeling of his seed flooding his mate's insides until it could fit no more and came gushing out around his deeply embedded cock.
His buried instincts were satisfied by such a coupling, calling for him to ensure all of his semen had been released inside his perfect mate and despite all logic, to breed him until he was heavy with eggs. Donnie unconsciously gave a few more shallow thrusts, making sure to spread his seed deep inside his welcoming mate, until he could feel Mikey quivering underneath him. His tiny broken moans loud in the now silent room.

Donnie’s eyes lazily moved up and he admired the way Mikey's pink penis twitched, trapped under the shiny wet silk of his panties. His cum had splattered all over his plastron, even reaching his bra. It barely registered in a small part of Donnie’s brain that his brother had come without even having his penis touched.
Mikey's face was beet red, with small tears at the corners of his barely opened, unseeing eyes. His arms were weakly grabbing the sheets on either side of his head, his mouth still letting out those delicious little mewls at each of Donnie's movements.

Donnie snapped out of his trance and slipped his now soft cock out of Mikey, setting up a new wave of shivers from his younger brother as his weak fists flinched, barely holding on to the covers. Donnie got momentarily distracted by how flush and wet and delicious looking his slit looked all covered in his cum, watching it leak down between his mate’s legs and over his little tail.
He managed to unglue his hands from Mikey's thighs, bringing them down softly. He worriedly noted how they were already starting to bruise. He brought his fingers up to Mikey's face, catching his unshed tears.
“Mikey, are you okay?” Donnie stuttered.

All that answered him was what could only be described as a gurgle.
Then a tired whine escaped Mikey’s mouth as he closed his eyes tightly, cleared his throat and blinked a couple of times.
“... S’ry.” Mikey managed to say after a few tries. “Brain, not working properly right now…”

Donnie let go of Mikey’s face and sat back on the blankets. What had he been thinking, treating his mate like that? He had let himself get lost in whatever animalistic instincts had been in the far recesses of his brain. It had felt so good… But at what cost? His eyes scanned Mikey’s bruised skin, guilt sinking deep in his stomach. He had even managed to rip the fabric of the stockings with how aggressive he’d been.
Donnie averted his eyes again, balling his fists in his lap until it hurt. He was so lost in his circling thoughts, he didn’t notice that Mikey had crawled over to him and taken his hands into his, until he felt the soft skin of his lips graze his knuckles, echoing what Donnie himself had done earlier to calm his mate down.

“Donnie, dude, love. None of that.” Mikey said, not letting go of his hands.
“And we better do that again, okay. Not right now because fuck I can’t feel my butt, but like, soon. Oh, and I’m keeping the fancy lingerie.” He added quickly with his own brand of blunt honesty and a fiery determination in his eyes. “Heck I’ll even buy more. Plus some new stockings because these ones are ruined.
“Really, if I’d known all it took was some overpriced piece of fabric to make you shut down that big beautiful brain of yours and fuck me into next week,” Mikey added with a playful smile, ”I would have bought some a long time ago.”

That effectively cut through Donnie's growing guilt trip in an instant. The unexpectedly crude lecture making him chuckle with incredulity until he was chortling loudly. He bonelessly fell on the nest now that all of his tension had been drained out of him. Donnie continued laughing as he snuggled close to his love, marvelling at the way he has always been able to diffuse difficult situations and stop him from overthinking.
“Dude,” Mikey whined, “I’m like, so sticky and hot right now. Stop wrapping yourself around me, you giant octopus!”
“Never! Now that I have you, I’m not letting go. I’m gonna drag you down to the bottom of the sea and bury you in kisses!”

All that was heard after that were the playful screams of a captured blue-eyed turtle being smothered in kisses, as promised.