Work Text:
“Hey, Ichimatsu... Ichimatsu!”
No. It was too late for this.
“I... chi... ma... tsu...!”
No. He refused—He refused . Ichimatsu continued breathing nice and evenly to trick the oldest of the Matsuno siblings into thinking that he was deeply asleep, praying that would be enough for him to go away and let him sleep after a long day of...
... Well, a long day of doing nothing, to be completely honest.
Yet his brother, who Ichimatsu was starting to believe was the incarnation of Satan, was having absolutely none of it. He felt a finger sneak around his neck and when he ran his fingers over his ticklish spot, Ichimatsu jumped away from the other’s touch reflexively.
“Tch...!”
“Hoho! So, you’re awake.”
“... Hrg...” Ichimatsu growled again, but refused to open his eyes nor turn around. “What do you want, Osomatsu nii-san? I’m not going to go play pachinko with you, it’s way too late. Ask Totty.”
“No, no, it’s not that... I can’t ask Totty for help with this.”
“Oh.” Huh. That was usually the only thing that motivated his older sibling enough to be up so late. “... Then? What is it?”
“Well... I’m horny.”
“...”
“Like really, really horny.”
... He... He sure didn’t beat around the bush. Ichimatsu felt his face warm up a little and frowned, refusing to acknowledge the secondhand embarrassment Osomatsu’s overly honest confession made him feel.
“... Good for you, I guess. Let me go back to sleep.”
“No way!” He grabbed his shoulder and forcibly turned his sibling around to face him. With a sigh, Ichimatsu finally opened his eyes to glare knives at his brother, only to receive a conceited pout. “C’mon, help me out!”
“‘Help you out’? How?”
“... You know how.”
“... I don’t.” The other frowned.
“C’mon! You know what I mean—Let’s have sex!”
Ichimatsu tsked. He had feigned ignorance hoping that his older brother wouldn’t be so shameless to outright ask for it, stupidly forgetting that Osomatsu was the very definition of ‘shameless’.
“No. I said go away.”
“Aw, c’mon, don’t be so cold!”
“I’m not in the mood.”
“Eeeh~? Why?”
“Because I just woke up!” Ichimatsu hissed between gritted teeth. He looked behind him for a second to check if his outburst had woken up Karamatsu, but his brother was still sleeping soundly.
“So? That’s no excuse. I just woke up too, and here I am with a stiffy.”
“T-That’s different. It’s not like you wanted that, that just happens.”
“C’mon, Ichimatsu~” He begged again, poking his cheek. “Help me out here. If I wake up next to Choromatsu like this he’s going to beat me up again! C’mon, lil’ brother~”
“I said no. Go jack off to the bathroom or something.”
“But that’s boring~...”
“Not my problem.”
Ichimatsu turned around, determined to ignore anything else he said, hoping he’d give up and let him go back to sleep. Unfortunately, Osomatsu was far from discouraged, instead leaning down on his ear and whispering with an evil grin pressed against the younger’s skin:
“You should be glad anyone wants to fuck trash like you, y’know.”
Ichimatsu’s breath faltered for the slightest second, and his brother’s grin widened.
“That... that won’t work.”
Osomatsu snickered maliciously, though, laying down by his side and sticking to his back. Ichimatsu felt his bulge poking his behind and tried to shift away, only to realize that if he moved any further, he’d wake up Karamatsu.
He was trapped.
His sibling’s smiling lips were on his ear again, hot puffs of air gracing his skin gently as he ground his erection against his ass, and Ichimatsu had to close his eyes when he felt his heart beat faster and his own cock twitch in anticipation.
... Shit.
“Man, I wish you weren’t so difficult.” Osomatsu whispered. “I know exactly what you like, after all, you hopeless piece of shit~”
“Ha—!”
A small, pained yelp managed to escape Ichimatsu when his brother pulled his hair, but it was quickly muffled by another hand covering his mouth.
“They’re gonna hear you.”
‘And it will be your fault, you asshole!’ He wanted to protest, but with Osomatsu’s hand in the way he couldn’t do much more than growl unhappily. His belly-aching didn’t last long, as his sibling yanked his hair harder until his back arched, his ass rubbing against the older’s crotch.
“Does it hurt? I bet it hurts; and I bet you like it, too.” He pulled again, hard, and a small mewl came from his victim. “Ha~, what did I do to deserve such perverted, shitty brothers, I wonder?”
‘You’re one to fucking talk!’ Ichimatsu thought, ashamed of the way his body was reacting. ‘I’ll kill you! I’ll kill...!”
“Nn—!”
Oh god. His eyes rolled to the back of his head when his neck was attacked, teeth burying themselves in vulnerable skin. Osomatsu left a long string of bruises all the way down to his shoulder, and one big bite mark that hurt so good, it made Ichimatsu’s hips twitch slightly when his brother let go, licking and kissing the spot before returning to his ear.
“You’re gonna have to cover those up somehow.”
“Mh...”
He was so damn weak. His mind was going blank, lost in the pain his body was suffering, the satisfying itch of his wounds, his brother’s bulge burying itself slightly between his ass cheeks.
Fuck. Fuck.
Two fingers went into his mouth then, and forced him to open it. Osomatsu played with his tongue between his fingers, humming happily while drool dirtied his hand and the pillow Ichimatsu’s cheek was resting on.
“Look at you. You’re really disgusting, drooling all over yourself like that.” He cooed mockingly.
Ichimatsu didn’t even manage to think anything to retort to that, his cock throbbing to the belittling words that fueled his lust.
Yeah... yeah.
He was a piece of shit. A waste of fucking space, nothing but worthless vermin that got off to being insulted and humiliated by his brother, out of all people. As he continued playing with his lips, using his fingers to eventually fuck his mouth over and over, Osomatsu whispered mean-spirited words that made his younger sibling forget why he was mad at all, his cock hard and painful and his ass flush against the other’s crotch, rubbing against his erection as if begging to get fucked.
“Oso... Oso... mah... hu... nii-han...”
“Shh...”
He took his fingers out of Ichimatsu’s mouth, a long trail of spit following right after. The younger man looked at them in a daze, blinking lazily, then followed them as they went lower, lower, and then, inside his pants. Wet, warm digits wrapped around his cock, and Ichimatsu thrust into them, closing his eyes.
“Hnn...”
A chuckle.
“Pervert.”
He said that awfully lovingly, and Ichimatsu didn’t need to turn around to know that Osomatsu was sporting his usual big, mischievous smile. After massaging the head with his thumb, his older sibling tried pumping his cock, burying his nose in his hair and taking in the flowery smell of the shampoo Ichimatsu had borrowed from Totty during their bath earlier that night.
The next few minutes their only form of communication was the speed of their breathing and their bodies’ movements. Ichimatsu grabbed onto his brother’s arm, tightening his hold whenever he felt good, then thrusting his butt backwards to make him gasp. His own precum started staining his pajamas and their sheets, making a warm mess in his pants that he was sure would become a problem later.
Whatever. He’d take care of it somehow. All he wanted to focus on was the fingers tightening around his shaft and the teeth caressing his ear.
“Haa...”
... Minutes were starting to feel like hours.
“Nn—”
He needed to come.
He needed... He needed...
“More...”
“Hm?”
“More... I want more.”
Osomatsu snickered. “Eeh~ That’s kinda presumptuous of you. I mean, what makes you think garbage like you deserves more than this?”
“Shut up...”
“Hehe, what if I make you beg like you made us beg when we were sick, huh? That looked like fun. Maybe I’ll make you call me Osomatsu-sama and refuse to jack you off ‘till you cry, heh.”
But he wasn’t in the mood of being teased anymore. Ichimatsu turned around to look at him with half-lidded eyes and his face flushed, frowning irritably.
“Osomatsu nii-san.”
“What?” Ichimatsu’s face darkened, and in contrast, his brother’s grin widened. “... Snrk. Oh, fine.” Finally, he ruffled the younger’s already messy hair. “You can be unexpectedly cute sometimes, you damn doll of darkness. On your back.”
Ichimatsu obeyed, thinking for a second about how ridiculous it was that he had ended up begging for sex himself when Osomatsu was the one who had woken up with a stiffy. Then again, his older brother did have a way to rope them all into his antics one way or the other, so he should’ve expected it.
“Lift your hips up a bit.”
His brother pulled his stained pants down to his thighs, looking at the other 4 sextuplets to make sure they were still asleep. If they were to wake up, then it would be easy enough to pull his pants right up before any of them realized what was going on. It was a tactic they had to come up with after having to give their siblings absolutely ridiculous excuses as to why they were half-naked and ‘hugging’ in bed several nights in the past.
As Osomatsu straddled him, Ichimatsu held his breath in anticipation, jumping slightly when he took hold of his cock with a hungry look on his face.
But then, he leaned down.
“Huh...” Ichimatsu exhaled, disappointed. “Just a blowjob?”
The oldest rose his head, confused. “W-What’s wrong with a blowjob? What were you expecting?”
Ichimatsu lifted his left hand, pressing his thumb and index finger together and then sticking his right hand’s index finger in the circle they formed. Osomatsu sputtered.
“Are you kidding!? We can’t do that with everyone here!” He whispered, looking at their other brothers nervously.
“Why not?”
“Because we would be too noisy!”
“... You’re the one that’s noisy. I manage just fine.”
“Am not.”
“You are, though. You always get too excited and end up moaning like a dog in heat, Osomatsu nii-san.”
“... Sh-Shut up.”
Ichimatsu smiled smugly as he pinched his belly in reprimand—It was nice to be able to give his brother a hard time for a change. It wasn’t like he was lying, either; Osomatsu did get too riled up and loud for his own good. Taking that into consideration, Ichimatsu finally accepted his offer, placing a hand on his head and guiding him to his cock until his lips touched the tip.
“Go ahead.”
His sibling looked up at him, making sure he was watching, then opened his mouth and swallowed him whole. He winked impishly then, and when he closed his eyes, Ichimatsu allowed himself a little smile of endearment.
Long gone were the days of embarrassing, awkward sexual experimenting that sometimes ended with one of them hurt badly. Osomatsu knew exactly what he was doing now and exactly what Ichimatsu liked, too, sucking long and hard, then pulling up and lapping the head of his cock with dedication before swallowing him again in one swift moment. The soft, slurping sounds and almost imperceptible moans coming from his throat were like music to the younger’s ears and he let out small gasps of approval, his hips soon lifting up to try and go deeper into the warmth and wetness that was driving him closer to the edge with every movement.
Every once in awhile, Osomatsu’s teeth would gently caress his cock. It wasn’t due to carelessness, but because it was the one thing that made Ichimatsu arch his back in bliss, his mouth opening in a quiet, breathless moan every time. That little oddity of his was something they had discovered accidentally, really, though it didn’t really surprise either of them when even pain like that would turn him on—If anything, it was one of the least weird things in Ichimatsu’s repertoire of eccentric fetishes. So Osomatsu made sure to let his teeth join the action from time to time, nearly laughing every time his brother’s hips jumped and twitched and the grip on his hair got tighter.
His orgasm was only announced by his cock hardening and another short gasp. Osomatsu had no choice but to swallow what pretty much poured directly into his throat, his eyes tearing up when the taste of semen overwhelmed him. In spite of his best effort he still choked, and ended up pulling away while coughing violently and a little too loudly, then looking at Karamatsu and the rest worriedly.
“You... You asshole, you gotta tell me... when you come...!” He whispered when he managed to regain his breath. Ichimatsu snickered wickedly, cocking his head to the side before muttering:
“I like seeing you choke, nii-san.”
“You little... how about I make you choke, huh!? Would you like that!?”
Ichimatsu shrugged listlessly, much to Osomatsu’s frustration. “Sure. It’s your turn, right? Do whatever you want.”
“Tch.” He pouted childishly, crossing his arms on his chest. “I can never win with you, can I? Sometimes I can’t tell if you’re an M or an S, Ichimatsu.”
A yawn. “Why do I have to be one or the other?”
“... As expected from the most twisted, perverted sextuplet—Ow!”
“C’mon.” Ichimatsu grumbled, retrieving his foot from his brother’s face. “I’m getting sleepy.”
With an indignant huff, Osomatsu climbed up his body until he was sitting on his chest, pulling his pants down to his thighs to finally free his erection. Instinctively, the younger brother licked his lips, salivating profusely when the head of his cock touched his cheek. Osomatsu rubbed his shaft against his face, sighing and closing his eyes gladly.
“Oh man...”
Ichimatsu snorted and reached for his brother’s ass, forcing him to sit closer, on his neck, and kissed his prick before taking it in his mouth. A small “Oh” escaped Osomatsu, his eyes fluttering close, and he started thrusting, slowly at first, picking up the pace once Ichimatsu got used to the rhythm.
“You don’t... mind, right?” He breathed, leaning forward and placing his hands on the floor to support his own weight, his back arching slightly as he continued to fuck his mouth. “If I move faster...”
Ichimatsu rolled his eyes—His brother should’ve known better than that. He grabbed his ass again, making him go all the way in, until the tip of his cock reached his throat. Osomatsu let out a shocked gasp, quickly reaching for his head to make sure Ichimatsu was okay as he guided his hips, making him pull back and then thrust in hard again, and again, and again.
“Fuck, fuck, fffuck...”
“Nn...”
Soon enough Osomatsu got the message and didn’t need any more guidance, completely letting loose and thrusting in and out without regarding his brother’s condition, panting like an animal in heat. Losing himself to the lack of air and the exquisite feeling of having his mouth and throat violated so roughly, Ichimatsu’s eyes rolled to the back of his head, his fingernails digging themselves into the supple skin of his sibling’s ass cheeks and thrust his hips up in the air, feeling himself get hard again.
“Ichimah... tsu~...!”
He answered with a low, throaty groan, sucking on his brother’s cock so hard Osomatsu had to cover his mouth to muffle a loud moan, his cock twitching against the younger’s tongue. He was close, very close, his thighs trembling with every thrust.
“Coming... coming, coming...!”
So loud. Ichimatsu didn’t even have time to check if their siblings had heard him, his mouth full of his brother’s thickness and taste, swallowing every last drop of semen and sucking him dry afterwards until Osomatsu lightly tapped his head, whimpering.
“Stop, stop, stop, oww...”
His younger brother gave him a twisted little smile when he pulled out, licking his lips gracefully.
“Sorry. Got carried away.”
“You totally did that on purpose though! You’re the worst, you monster...”
Osomatsu wasn’t mad, though; In fact, even as he complained, he looked positively spent. He offered him a happy, satisfied smile as he sat by his side, pulling his pants back up and yawning.
“Phew, I really needed that! Thanks a lot, Ichimatsu!”
“Yeah... But...”
There was still... one little problem.
“I think I can finally go to sleep now! So I’ll leave you alone too, okay?”
“Nii-san.”
“What...? Uh... what are you doing?”
Ichimatsu reached for the hem of his pajama shirt, and then...
Pulled upwards to take it off.
“Hey—whoa—! Hmmf!” His protests were silenced with a quick hand, just like he had done to his little brother a while ago, and he gave him a look of confusion. “Hmm!?”
“I’m hard again.”
“A-Again!?” He muttered in between his fingers. Ichimatsu nodded, taking his hand and placing it over his crotch. “Whoa.”
“Yeah. Couldn’t help it.”
“Uh, well... I uh, could do something about it, but... ” Osomatsu smiled nervously at his brother’s sudden interest, then scratched his head. “... It’s just that, I’m kinda tired...”
A snarl. “ You got me into this. Take responsibility.”
“Eeh...” Osomatsu backed away slightly, scared of Ichimatsu’s trademark glare. “I just... don’t think I’m in the mood anymore...”
His younger brother smiled darkly, grabbing his arm in an iron grip. “Don’t worry. I’ll get you in the mood. You’ll see.”
“Huh!? Why does that somehow make me more worried—? Hey, wait—”
“C’mon. To the bathroom. No one is going to hear us there.”
Osomatsu gulped, realizing his destiny was inevitable, and let himself be dragged outside the bedroom. While he insistently whined about how cold he was without his pajama shirt, Ichimatsu smirked.
Screw sleeping. The night was still so young, after all.
