hiii thanks so much!! i'm rly happy to hear that.. idiosyncrasy is one of my favorites too! i hope this one's to your liking too ^_^

They were only supposed to go to the beach. Minako promised they’d just go to the beach with the rest of their friends.

Well— her friends, really. They were mostly girls whom Minako befriended during their first year of middle school. Because they were friends with Minako, that made them Minato’s friends by extension. That’s what she insisted, anyway. Minato didn’t really care. He had his sister and that was all he needed at thirteen years old.

Except she liked to say one thing when she really meant the other, at times. He wouldn’t go so far as to call it lying, because he should really be smart enough to realize when his sister is up to something. Minako had a knack for getting into trouble and dragging her brother into it, too. That’s how they’d always been, since they were little and their parents were still around up until now, being passed on from auntie to uncle to auntie.

Earlier that week, she said they’d go to the beach.

“It’ll be fun!” said Minako, tugging at his sleeve as he tried to focus on his homework, “C’mon, all you do is stay inside and play games all day.”

“I like staying inside and playing games all day,” said Minato, “besides, I can’t go into the water.”
His sister frowned. “You can still come with us. Just stay on the shore with our stuff.”

“I don’t wanna babysit your stuff.” He was half-way through writing an equation down before scribbling off the page, Minako’s hands tickling at his sides. Minato’s attempt to push her away was weak as he giggled, “Hey, don’t!”

She had him pinned to the floor and in tears by the time he pried her hands away. He was still gasping for breath as she asked, “Please come with me, Mina?”

Minato sighed, and loosened his grip on her wrists. Minako slid her hands down until they were palm to palm, fingers threading through his like silk. His heart did a little flip as he watched, cheeks flushing as warmth bloomed through his chest. These odd sensations and feelings were commonplace to him ever since they entered middle school and Minako had begun growing into herself and Minato had begun falling behind.

“I’ll go with you,” he acquiesced, “but I’m staying on the shore. And I’m wearing a shirt.”
Minako dipped down to kiss the tip of his nose. “Yay! It’ll be so much more fun with you there, Mina. I promise!”

Fun wound up involving a sneaky trip to the showers. Fun wound up to be what they typically got up to at night under the covers, except Minako had to make it so much worse.

The bikini she brought for him was, unsurprisingly, a perfect fit. She knew his body as well as her own, by now. Of course she would know what size would fit him best.

His hands itched to rip it off. The bow she tied on his back was too tight and the bikini bottom hung too low on his hips. It accentuated the dip of his bones, how skinny his thighs were and the curve of his waist towards the small swell of his chest. It pointed out his lack of flesh in comparison to his sister, who filled out her own swimsuit nicely.

He didn’t have any time to appreciate it, though. Minako pulled him into one of the shower stalls just to have him try this pink, frilly thing on while her friends continued to play at the beach.
“Oh, you look so cute,” she giggled, pulling him close by the waistband of his bikini bottom, “you really should wear this out.”

Minato pushed at her wandering hands as he turned his head away. Minako had tried for a kiss but ended up pressing her lips to his cheek, instead.

“I wore it,” he said, “I wore it, so… let’s go back, please?”

“Why are you in such a rush? They won’t miss you.” Minako shifted from his cheek to his jaw, pressing kisses against his flushed skin until he shuddered under her. With a little push, his back met the wall of the shower stall and he was caged in place. “I told you we’d have fun. I know this is your favorite thing to do.”

Her hands were too hot on his body. They traveled the expanse of his torso, tracing over his ribcage and down towards his navel. One of her hands brushed over his belly button and he sucked in a breath. Fingers teased at his waistband while her lips found his collarbone.

“You’re wrong,” Minato’s voice came out too shaky and too uncertain, “I don’t like this.”

Her laughter was candied. Sweet as it filled the empty shower room. Minato typically loved the sound— when it wasn’t being directed at him.

Minako's nails closed around his nipple and rolled it between her fingers. He willed himself to stay still, to ignore the brief sparks of pleasure from the pain and swallow back his moans. Minako couldn’t get her way this time. He would deny whatever reaction she wanted to pull from him for as long as it took.

His sister pouted as she looked up at him, pretty eyes narrowed. “Don’t be like that. I like hearing you.”

“We shouldn’t be doing this, Minako,” he tried, “We could get caught.”

“Duh. That’s what makes this even more fun.” Her hand slipped under his bikini bottom, diving right for her goal. The pad of her finger found his clit and he couldn’t smother the whine from his mouth fast enough. She simpered at his reaction. “See? You still want this. You always want this.”

“I don’t, I—” She pressed hard against him, delighting in the broken moan that left his throat. Minato pushed at her shoulder, nails digging into the smooth skin. “Minako, please—”

“You don’t have to beg,” His sister kissed him at the same time her middle finger slipped into his cunt, swallowing the moan that spilled from his mouth like water, “I’ll give it to you.”

It really was awful. She was awful, and Minato knew he couldn’t keep coming up with excuses for her behavior forever. He couldn’t keep scrambling for reasons as to why his sister should be allowed to play with his body like this, pushing him hard against the wall to get a better grip so she could move her wrist faster, harder. His head hit the back of the wall hard as he grit his teeth to smother the whines and keens that left his throat, pulled out from deep within his diaphragm.

Minako knew his body as well as her own by this point. She had the same parts as he did, after all, she just knew how to play with them better than he ever could. Being twins, their body types were considerably similar. Identical down to the beauty mark on their hip.
So of course her pleasure points would be his. It only made sense.

“We can’t,” he gasped, pushing against Minako’s shoulder, “We should stop— we should stop doing this, Minak-oh— please—!”

Minako spoke as if reprimanding a disobedient pet. “You keep saying ‘no,’ but you’re this wet. You’re even more wet than usual.”

He shook his head, refusing to look down and acknowledge the slick running down his thighs straight towards the floor. Something just felt— different. A strange sensation as if something were building, coiling tight inside of his belly alongside the pleasure. It was going to come out if she did this any longer, whatever it was. Fear suddenly spread through his body like a virus.

Minato really did try to push her hand away and out of his bikini. She would laugh at him if that happened. He’d never hear the end of it. “Stop, don’t do that, something’s…”

“What?” asked Minako, innocently enough, “Here?”

She went straight for the spongy spot inside of him, someplace Minato hadn’t really been able to reach himself because he could barely stand having his own fingers inside of him. A sob broke from his throat, tears beginning to gather and blur his vision. “Stop!”

“What happens when I do this?”

Minako had no trouble flexing her fingers, rubbing and rubbing and rubbing until he had to scramble to push her hand away. His hips went taut and the pressure building in his belly seemed to burst, hitting the shower floor in streams.

It was the worst kind of release, worse than cumming, worse than anything Minako could have done to him. His sister yanked her hand back with a gasp, leaving Minato to cling to her as his hips twitched and legs shook. It left him dripping and more foggy-headed than before, panting for breath against her neck.

“You— did you—?” Minako seemed to struggle to find the words to say, caught between laughter, “Did you just pee? From that?”

Had he? He wanted to deny it. He couldn’t have. That couldn’t have made him— was that even possible? That hadn’t happened before when they did this, it felt just as visceral and raw as it usually did, only worse. So much worse. He could hardly keep himself up with the amount of pleasure drowning his senses out, robbing his ability to speak. He wanted to say no.

But Minato’s mind had run away from him at the same time that mess burst out of him and he didn’t have the energy to chase it back. His sister sounded so amused, like Minato just showed her a neat party trick. Her laughter rumbled in her chest, vibrating against his cheek and he wanted to hide away in the sound. Burrow deep inside her chest so she wouldn’t be able to touch him again but he could still be safe and sound. Minako always kept him safe and sound, didn’t she?
Even when she was being mean, like now. Minako’s laughter dissolved into giggles as she held Minato close. Her lips found his cheek with a loud smack.

“You’re so much fun to play with, Mina,” his sister said, “I wanna see what else I can get you to do.”

Distantly, he thought of her friends still back at the beach. He wondered if they even noticed the two of them were gone. They were supposed to be there with them. Minato said he’d watch their stuff.

Instead, he let Minako kiss him again, weak against her eager lips and tongue. All of him was weak for her.When her hands found his hips to pull his bikini bottom off, he didn’t even flinch. She was saying something about returning the favor, guiding his hand to between her legs, and he dropped to his knees in response. Her pleasure was his.

hope this is to ur liking anon.. i'd been meaning to get back to office au ^_^

“Hey, you’re trembling.”

Souji peeked up at Minato from under his fringe with his pretty round eyes, bottom eyelashes curled against his ruddy cheeks. The glasses perched on his nose had only fogged up a bit from the heat generating between them. He wasn’t even that flustered, and had he been anywhere else he may have even looked normal.

But he wasn’t anywhere else. He was on his knees under Minato’s desk with his lips shiny and swollen with spit, a loose grip around Minato’s dick in his hand that was beginning to drive him a little crazy. He pulled off right when Minato was about to finish and his body was mourning the loss of contact with his mouth.

Souji’s hand moved towards the tip, rubbing his palm against the flushed head gently. Too gently. Minato needed it a little harder, a little faster, but he knew that wasn’t Souji’s way of doing things. Especially— unfortunately— when it came to sex.

“Does it feel that good?” he asked, and the question was innocuous enough. Souji had admitted at some point that he hadn’t done this very often, so he looked for reassurance. Minato won’t lie: it was attractive. Cute, even. Learning how timorous this perfect guy was when it came to simple pleasures like this was a genuine, delightful surprise.

He was a quick learner, though. Absurdly quick.

Souji’s other hand left his thigh to wrap around the base, still keeping that loose grip. He was playing with him with two hands in two different places, top and bottom and all of it was just too soft. Minato gripped one of the arm rests to his chair tight.

“Yeah, can you just—” he sucked in a breath when Souji’s lips touched the head of his cock, hips twitching against the touch to entice him to actually suck, “yeah, c’mon, just…”

His tongue flattened against the underside, leaving his mouth open just a little wider but so much more obscene. His dick gave an involuntary twitch and pre leaked down onto Souji’s tongue.
Minato spoke as if he’d just taken a punch to the gut. “Stop being a tease, Seta.”

His junior licked his lips as he pulled away for a moment. “What happened to using first names when we’re alone?” He scooched closer against Minato’s lap to mouth along the length of him while the hand around the base drifted further south. The same featherlight touch splayed over his balls, drawing another choked gasp out of the man’s mouth. As if emboldened by his reaction, his hand set to massaging the coarse skin.

Minato would call him any name he wanted at that moment. Souji had him right where he wanted him, alone in his department, melted down to putty at his desk where no one can see but him.

“We’re still in the office, senpai,” murmured Souji, “we need to be quiet.”

Minato was halfway through a smart quip he barely had the mind to say when Souji’s mouth finally wrapped around him, pushing him down into his throat in one go and his voice deliquesced into a shameless moan. Had anyone been in the office, they would have turned their heads at the sound of it. Wanton and debauched and it was all because of the perfect, hot mouth swallowing him whole.

He scrambled to cover his own mouth, reaching for Souji’s head to grip. Soft strands made way for his nails to dig into his scalp, but Minato made no move to force his head in any direction. Souji had already begun to move and he was just trying to hang on to the last shred of coherency in his pleasure soaked brain.

Souji set both of his hands onto Minato’s thighs to spread him that much further, lewd wet noises making up for the space Minato’s voice couldn’t reach. Sloppy, Minato would say if he could properly string together a sentence. Souji was taking him so wonderfully but he was making such a mess, drinking down the combination of spit and pre just to help Minato along a little faster. Pretty, perfect Souji on his knees, between his senior’s legs, trying his hardest to make sure his cock hit the back of his throat with every bob of his head.

Minato whimpered his name between his fingers over and over, stuck on the two little syllables the more he went on. He wouldn’t last much longer like this. The hand buried in his hair smoothed over towards the side of head, eyes following his every move. His glasses sat uneven on his face, knocked out of place from where his nose bumped into his lap while fat tears gathered at the corners of his eyes. He was trying so hard.

It was more than enough. Minato tapped his head frantically, a signal between them for him to stop, and grabbed himself to position just where he wanted. Souji’s chest heaved as he looked up at him, a gorgeous little mess right under his desk, pink and porcelain and silver. He was gasping for breath but nodded when Minato pulled him closer by the hair, hardly flinching when he spilled all over his face. Thick and milky and white landed on his lips, across his nose and onto his glasses until it was dripping off of the frames.

They both physically slumped, Minato against his chair and Souji against his senior’s thigh. Minato carded his hand through Souji’s hair as they caught their breath, brushing it up and out of his eyes to avoid the sticky mess on his glasses.

Souji huffed a laugh. “You got it on my glasses.”

Maybe he’d been aiming for them subconsciously. There was just something about those glasses on him. Made him look so put-together. So tempting to take apart.

He reached to slip them off his face. “Sorry. Bad aim.”

“Yeah. I’m sure.”

Minato set them on his desk with a little grimace before reaching for a few tissues next to his monitor. He cupped Souji’s cheek with one hand as he set about wiping him up. There was just a bit that wound up on his nose and cheek. The rest Souji had licked clean off his lips. “Less mess when you swallow.”

Souji’s cheeks dimpled in his hand as he smiled. “I’ll keep that in mind, senpai.”

“How long are you gonna keep calling me that?” Minato rolled his chair back to let Souji climb out from under his desk. The younger man stretched his arms over his head and rubbed at his knees, undoubtedly sore from where he was on the ground for the past half hour. “We’re not in the same department.”

“You’re still my senior,” said Souji, “Does it bother you?”

Minato hummed, hooking a finger through one of his belt loops to bring closer. He pulled him onto his lap, wrapping his arms around his waist to press his lips to the hollow of his throat. “Nope. I like hearing it from you.”

Souji shivered under his touch. “You— wanna keep going?”

“Yeah,” Minato glanced at the empty space on his desk, knowing Souji would follow, “I think I should spoil my kōhai a little.”

I hope it's too ur liking..!! I took some liberties w the setting ^^'

Ryoji was late.

Which wouldn’t have been so odd had he at least called, but the house phone stayed silent the entire afternoon. Minato tried not to think too much of it as he did homework and reheated leftovers, taking his dinner alone. Time stretched into the evening until he was brushing his teeth alone, and climbing into bed alone. His big brother usually tucked him in, and despite Minato’s insistence that he was too old to be tucked in, he ached for one of Ryoji’s lullabies.

He still set out Ryoji’s futon next to his for whenever he came home. If he came home. Maybe he’d gotten tired of caring for a little brother, of having to work and attend school because their parents weren’t around to take care of them anymore. A boy in college shouldn’t have to take care of a little kid like him.

Evening slowly morphed into night and the darkness had him reaching for the stuffed bear their mother had gifted to him when he was younger. He wasn’t sure how long it was until he faintly heard the front door slide open. Shoes hit the ground soon after, and the door was closed.

Relief flooded Minato, who had worried himself into a fitful sleep. Ryoji hadn’t left him, after all. He was just a little late from school.

Ryoji’s footsteps were a little odd, as if he couldn’t quite keep a straight path, and he reached their shared room after some time. The door clicked open to Minato’s body tucked under the covers, futons perfectly laid out for the night.

He blinked his eyes open when Ryoji stepped into their room, humming something under his breath. Just before he could sit up, Ryoji’s weight joined him on his futon, body pressing against him under the blankets. Minato relished in how warm he was, how his arms wrapped around him in the dark so tight. The same grip Minato had on his stuffed bear just minutes ago. He felt a little like a toy for Ryoji to hug.

But something was different.

“Ryo-nii,” he said, voice laced with sleep, “why do you smell like that?”

The smell was awful. Sour and a little like the rubbing alcohol they kept in the first aid kit. Minato remembered his father smelling like this every so often on the weekends, when he’d come home late just like Ryoji had.

“Are you…” What was that word their mother would use? He racked his sleepy brain for it, combing through memories of his parents that he’d tried to push away. “Drunk? Ryo-nii?”

Ryoji giggled, turning his head to rub his cheek against his hair. “Nooo way. Jus’ had a few drinks with my friends, Mina-chan. I feel really good.”

Minato was only ten but even he knew alcohol had a way of making people feel good in a bad way. Their mother always said their father had a way of chasing that good bad feeling, and had forbidden either of her sons to follow after him. Minato took it to heart. He’d assumed Ryoji had done the same.
Even if Minato wanted to move, he hardly could with how heavy Ryoji’s weight was around him, almost pinning him down to his futon. The most he could do was wriggle against the arms pulling him closer to Ryoji’s chest, frowning when he felt his big brother bury his nose against his hair and inhale.

“Stop moving so much,” his big brother whined, “lemme just hold you for a bit.”

This wouldn’t be such a weird request if Ryoji was in his right mind. But the way his arms were holding him so tight, as if he were scared he would run away and never come back was beginning to scare Minato a bit.

Minato squirmed, trying to push back against Ryoji’s body with his own. “You’re— heavy.”

Ryoji’s breath stuttered behind him as he did so. One of Ryoji’s hands moved to rest on his waist, pulling him down by the hips. Something hard rubbed against his backside the more he did it, startling Minato into staying still. That wasn’t there before, was it?

His big brother hummed again, louder than before and without a melody behind it. It was just a— noise as he continued to grind against Minato’s body, not unlike an animal. Minato’s chest felt tight at the sound of it.

“You’re so soft,” Ryoji said, trapping him with a grip too strong to even wriggle against, “you’re perfect, y’know that? My cute little brother— ah— shit, I shouldn’t do this…”

Minato’s voice left him in a whisper. “Ryo-nii?”

“‘M sorry, Mina-chan, jus’ lemme…” His big brother’s voice broke off into a groan as he shifted to nuzzle into his neck. He was panting, breath hot against Minato’s flushed skin as he jerked his hips against his body. One of Ryoji’s hands clumsily shoved its way under his shirt, groping at the smooth skin with blunt nails. A gasp left his lips when he tried cupping at his chest, squeezing at the slight swell of flesh.

Minato recoiled at the touch, flinching away with nowhere to go. He’d never felt trapped when he was with his brother but right now he felt like an animal in a cage with its back against the wall, confused as to why this was happening and what Ryoji was even doing with his body. Little sounds kept coming out of his mouth, heated and breathy as if he were chasing something. Like their father chasing the good bad feeling at the bottom of a bottle. Was Ryoji chasing after a similar good bad feeling with Minato?

Ryoji’s lips were right against his throat, and Minato had to strain his ears to make out what he was even saying. It was all jumbled, slurring together from whatever he drank with his friends. “Wish you’d stay this small forever, Mina-chan… I could take care of you forever just like this, and you’d never need anyone else. Just me.”

Tears welled in his eyes and he quickly shut them tight to keep them from spilling over. What was Ryoji saying? He didn’t want to leave. Even if he kept doing— whatever this was every night, Minato still wouldn’t be able to bring himself to leave. This was his big brother, who always tucked him in and helped him with his homework.

His lips kissed Minato’s neck, and he shuddered at the contact. They were wet and sticky with spit. Ryoji’s hips grinded against him more roughly and that hard thing in his pants kept brushing against his backside so unpleasantly. Maybe this was all just because of the alcohol he had. This was because he was drunk, like their mother used to say about their father. That’s all this was.

Ryoji whimpered his name again before his hips finally stuttered to a stop. Minato felt something wet rub against him but willed himself to stay in place, for his brother’s sake. Ryoji’s grip began to loosen, breath evening out until he was no longer panting. Even still, Minato did not move.

A few moments passed until he felt Ryoji shift, lips finding Minato’s cheek.

“‘M sorry, Mina-chan,” he murmured, voice heavy with sleep and alcohol, “‘M really sorry. Please don’t be mad.”

Minato clutched his stuffed bear against his chest tight. He could never be mad at his big brother.