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It was getting way too typical for Natsuo to find his baby brother Shoto playing with himself. He understood that Shoto was a hormonal teenager, hell he himself was in his prime fucking years, but there was something so jarring about finding your brother three fingers deep in his pussy on the couch every other day. Things would be different if Shoto was in his room doing this shit, but he was just doing this out in the open in various places around the house when he thought no one was around.
Except Natsuo was always around and he always seemed to get front row seats to his baby brother fucking himself stupid. He was starting to wonder if it was on purpose.
The next time that he walked into the living room after coming home from class he yet again finds Shoto on the couch, touching himself. At the very least Shoto still had his pants on, but his hand was very obviously rubbing at his clit and he was making soft little moans with his head tilted back and eyes closed and lip bitten. It was a much too casual display of his younger brothers slutty behavior and disregard for literally anyone else in their house that Natsuo just couldn’t take it.
“That’s it!” he growled, stomping over to where Shoto was on the couch he ripped his arm out of his pants by the wrist. The teen startled and looked up at Natsuo wide eyed like he had never expected to get caught. “Stop touching yourself all over the goddamn house Shoto,”
Shoto’s cheeks flush a little, “I didn’t–”
“Don’t give me that shit. You already know that you shouldn’t be masturbating out in the open like this but you keep doing it anyways and I always end up seeing it!”
“O-Oh …”
“Yeah, oh,” Natsuo sighed and dropped Shoto’s hand, pointedly ignoring how wet and sticky his little brother’s fingers were.
“Sorry Natsuo-nii,” Shoto apologizes.
“It’s fine. I get it, just … please keep it to your room,”
“Right, okay,”
After their talk things started to get better. Natsuo doesn’t have to brace himself before going into the house or leaving his room anymore. The couch and the dinning room and the kitchen and pretty much everywhere else is devoid of a masturbating little brother and for once Natsuo can breathe. However, it does feel a bit strange.
He still sees Shoto regularly in the house, they still make small talk and every now and then Natsuo helps him with his homework. But the unconscious normality of seeing Shoto mid pleasure seeking had disappeared and Natsuo finds himself thinking about those times more often. Almost as if he missed finding his little brother in compromising positions. But that couldn’t be right.
It took two weeks for the new change to be broken though.
Natsuo had finished an class assignment and really needed to refill his glass of water. He stood up from his desk, did a little stretch, and then headed towards the kitchen. Only, upon setting foot in the kitchen he found Shoto with one hand on the counter to help him balance himself and one hand shoved in his panties.
His fingers were working furiously inside him, wet slick noises and the light smack of his palm against his clit filling the room as he panted. Shoto’s cheeks and ears were flushed red and his bottom lip bitten between his teeth as his head drooped downwards towards the counter. He wasn’t even paying attention to his surroundings, just fucking himself like a bitch in heat.
Natsuo stands there for a minute – in shock or taking in the view, he’s not too sure which. He thinks about clearing his throat or making some sort of noise but before he can do that Shoto makes a noise and softly curses under his breath. Apparently, Shoto had hit a particularly sensitive spot that had him drooling and moaning. His head picks up and while his eyes are fluttering from pleasure he sees Natsuo.
Where the elder sibling had expected Shoto to stop what he was doing and be embarrassed or shy away from his brother, what actually happens is much different. No, Shoto keeps going. His sloppy little cunt seems to be making more noise as Shoto’s fingers plunge in and out of himself.
“I’m sorry! I’m sorry Nii-chan! I just, ngh … I couldn’t help it!” Shoto whines.
It takes a moment for Natsuo to figure out how to respond to that. Especially when Shoto was still fucking touching himself. But seeing this display again after two weeks of subtly craving it makes something snap inside of Natsuo.
He doesn’t respond. Natsuo just walks over to the fridge and starts to refill his glass.
Shoto squirms, glancing at his brother and the ignoring seemed to get the teen to actually stop fucking himself, “Natsuo-nii?”
Natsuo finishes filling his glass and then turns to look at his little brother.
“Come on,” is all he says before starting to leave the kitchen.
“… What?”
“I said, come. on. Shoto,”
The teen quickly follows after him and they enter Natsuo’s room. He closes the door behind them and makes Shoto sit on the bed before he sits in his desk chair. Natsuo faces his brother and takes in his disheveled look. All he was wearing was a large shirt and a pair of lacy panties that flashed Natsuo when he shuffles nervously. Those pretty cheeks were still slightly red and though his eyes stayed straight and focused Natsuo could see the slight waver in them.
With a heavy sigh Natsuo pinches the bridge of his nose.
“Na–”
Natsuo holds up a hand to stop whatever excuse that was about to come out of Shoto’s mouth, “Are you really that fucking desperate Shoto? Is that why you’re acting like a slut?”
Shoto shrinks in on himself a little, “I’m not a slut,”
“Are you sure? Because you sure as hell looked like one a few minutes ago when you kept fucking masturbating after being walked in on by your brother,” That time Shoto doesn’t have a come back. “Can you even go an hour without touching yourself at this point!?”
“I can! I’m not that bad Natsuo-nii!” Shoto huffs out.
Natsuo leans back in his chair, “Alright then, prove it.”
“Huh?”
“Prove. It.” Natsuo repeats, “For the next hour you’re gonna be in here with me and if I find your hand trying to touch your slutty whore cunt I will remove it and the hour will start over. If I have to stop you more than three times you can go back to your room and fuck yourself stupid like the fucking slut you are. Sound good?”
It takes a second before Shoto softly replies, “I– okay…”
Shoto seemed a bit reluctant but he still wanted to prove his older brother wrong so he stayed. Natsuo watches him for a while, watches the way that Shoto squirms under his gaze, before he rolls his eyes and turns around. The action confuses Shoto for a second before Natsuo taps the small mirror on his desk with his pen.
He meets Shoto’s eyes in the mirror, “If you try anything, I'll know,”
With that, Natsuo returns his attention to his class work. Shoto sits stiffly on the bed as the minutes tick by. They make it a whole five minutes before Shoto starts fidgeting. His legs squeeze together, hips rocking side to side lightly, and Natsuo looks at his hands digging into the sheets. The poor teen was trying to not let his hands reach for his panties.
Another ten minutes and Shoto had tucked his hands underneath himself, legs still shifting and squirming and his face was turning increasingly pink. When they hit the twenty minute mark Shoto had changed his seated position to sitting on his knees and hands with his legs spread slightly.
Shoto was starting to make more noise. Little gasps and whines as he rocked his hips into the air. Natsuo clears his throat and Shoto stops moving, body going still as he tried to be good. He makes it another five minutes before his hips start to shift again. Natsuo can just barely see Shoto’s fingers dig into the bedsheets underneath him and his eyes get a hazy distant look in them.
Five more minutes, just as they hit the halfway mark, Shoto breaks. He'd been squirming and humping into the air like a stupid bitch in heat but Natsuo made no move to stop him because he had been able to keep his hands off. But slowly, Shoto’s mind was drifting off and the heat building and throbbing between his legs was becoming too much to ignore.
Natsuo waits silently, watching Shoto in the mirror as his hand slides from under his ass and he leans back on the bed, legs spreading as he goes to touch himself. The first contact of his fingers brushing his panties makes Shoto moan softly and Natsuo chooses that moment to turn around in his chair and yank Shoto’s hand away by the wrist. The teen gasps and then looks up at Natsuo with wide eyes.
“N-No, wait! I'm sorry! I didn't mean to–”
“Time is starting over,” Natsuo said coldly.
Shoto whines, “Please Natsuo-nii, I'm sorry. I'm not a slut I just … got distracted. I'll be good, I promise,”
Natsuo just turns back around in his desk chair. A frustrated whine comes from behind him as Shoto falls back onto the bed. They go through the same procedure, Natsuo continues with his classwork while Shoto fidgets on the bed trying not to touch himself.
The teen tries to get cleaver this time and they make it forty-five minutes before Natsuo finds Shoto rolled over on his stomach with his finger tips placed just below his cunt so he could grind down onto it. This time Natsuo rips his hands away and makes him sit up again. It's almost cute how Shoto pouts and whines. Natsuo ignores all of it and has Shoto tuck his hands under his knees.
“Natsuo-nii, please! It's not fair!! I was so close earlier and now you're making me wait,” he cries.
“It's not fair,” Natsuo mocks, “You're sounding like a brat Shoto. I thought you wanted to be good, hmm?”
Pink colors Shoto’s cheeks, “I do … But–”
“No buts. If I see your hands move from under your legs this time you lose. Be careful, you're already at two strikes,”
Again Natsuo turns away, but this time he's finished with his classwork so he simply watches Shoto in the mirror. The minutes tick by, Shoto still squirms and squeezes his thighs together, rocks his hips every now and then, but he otherwise stays still. Finally they make it to an hour and Shoto looks like he's about to hurt himself with how hard he's restraining himself.
The soft chime of Natsuo’s alarm goes off and Shoto breathes out a sigh of relief.
“Pleasepleaseplease can I touch myself?” Shoto begs.
Turning around leisurely, Natsuo finds his poor baby brother with tears in his eyes and his hands still tucked under his legs. He stands up from his chair and takes the small step to get closer towards his brother. Natsuo runs his hand through red and white strands softly, petting the teen and noticing the way Shoto’s eyes flutter at the touch.
“Good boy. You can touch,”
Quicker than Natsuo’s ever seen Shoto move before the boy's legs open up wide, feet coming up to rest on the bed before he leans back slightly and his fingers are sinking deep into his cunt within seconds. Shoto moans loudly, racing towards making himself cum. It was amazing how easily Shoto lost himself to pleasure, the sound of his soaked drooling cunt getting stirred up with his fingers rang throughout the room.
“T-Thank you! Thank you!” Shoto slurs out, nearly going cross-eyed.
Natsuo’s hand goes from gently petting Shoto’s hair to cupping his jaw, forcing the younger to look up at him. Those pretty mismatched eyes were glossed over, only focused on fucking his pussy. With a small hum, Natsuo opens his mouth again.
“Stop.”
Shoto blinks, tears falling down his cheeks as he lets out a sob, “Nonononono why!? I was a good boy!! Why!?” Despite his protests, Shoto's fingers stop.
“I don't recall saying you could cum,”
Another sob bubbles out from Shoto's throat, “Natsuo-nii please!! Please I'm so close, please!! Wanna cum, wanna cum, I'm almost there just please,”
Natsuo pushes Shoto down onto his bed, his little brother clinging to him, and crawls over top of him. He listens to Shoto’s string of pleads and begging before returning his hand to Shoto's hair and tugging harshly.
“Continue,”
Shoto immediately starts up his fingers again. The loud sound of slick rings in Natsuo’s ears, as well as the slutty moans and breathless pants Shoto makes while keeping eye contact with his brother.
“Please can I cum? Nii-chan, please!” Shoto whines, tears still flowing as he fucked himself with a desperation.
“Mhm … do you think you deserve to cum, slut? You failed twice before you could keep your fingers off your whore cunt. I would think that a well adjusted boy such as yourself shouldn’t have even gotten horny in the first place. I mean, really Shoto? Still getting horny in your big brother’s room? Don’t you have shame?” Natsuo makes sure Shoto keeps looking at him, tugs his hair when his eyes start to glaze over and go distant. The little slut was barely even paying attention to him.
A shiver goes through Shoto’s body as he hits a good spot deep in his pussy and has to hiss out a breath as he tries not to cum. His eyes roll and flutter slightly, mouth dropping open in a silent moan and his hands slows down for a second – not fully stopping but curbing the amount of pleasure he was giving himself.
“Please, fuck … ah, need to cum! Nii-chan,”
Natsuo sighs, “Not even listening. Stop. Take your fingers out of your cunt,”
Shoto follows instructions reluctantly, more tears spilling down his cheeks as he whimpers.
But that disappointment is very quickly replaced as Natsuo’s own fingers violently shove themselves into Shoto’s dripping pussy. Shoto’s eyes roll back into his skull, a debauched moan coming out of his lips and his hips immediately start to bounce on those thick fingers.
It was so fucking warm and tight inside of Shoto’s pussy. Natsuo couldn’t stop his cock from throbbing thinking about being inside of his baby brother. The sounds could never have fully prepared him for how tight and wet Shoto was either. His brother was fucking soaked. Drooled slick all over his fingers like a faucet and gushed more when his fingers reached deep within him. Shoto’s hands were grabbing and clawing at Natsuo’s arms as he used them to anchor himself and work his hips down on those fingers even harder.
Natsuo barely had to do any work. Shoto was fucking himself stupid on his fingers without him having to say anything. He was just chasing after the high of the orgasm he had been denied for the last two hours.
“Yes, yes, yes! Please! Please gimme! Cum! Need to cum!” Shoto babbles out.
Natsuo gives a dark laugh, “And you don’t think you’re a slut, Shoto? Moaning and begging with both mouths like a first class whore. Where did you learn this, huh? You’ve been fooling around with your little classmates or something?”
For some reason the thought of Natsuo’s sweet little brother messing around with other people made him angry – jealous. It made something possessive well up inside him. No one else should be touching Shoto but him.
“No … just … l-lots, ngh, of videos,”
The answer calms him a little but Natsuo still grips Shoto by the jaw again and presses their faces closer together. He’d be lying if he said he hadn’t been taking glances at Shoto soft little mouth. He wondered what it tasted like. But before that he needed to instill some rules. A few light slaps against Shoto’s cheek gets the teens attention.
“You come to me from now on, understand? You don’t get to touch yourself unless I say so. You don’t get to cum unless I say so. Anytime your little cunt gets all messy and sloppy and aches you tell me and I’ll take care of it if I think you deserve it. Got it?”
Shoto nods his head, “Yes, Nii-chan,”
Natsuo rewards him with a kiss, deep and heated and with tongue. Shoto moans into the kiss trying to keep up but clearly inexperienced. Part of Natsuo really hopes that he had taken Shoto’s first kiss in this moment. He pulls back quickly, just wanting to get a little taste, and already Shoto looks so pretty and fucked out now with spit glossed lips.
“Cum for me baby,” Natsuo ordered.
It’s like Shoto’s whole body releases the tension he’d been holding in. Natsuo has to kiss him to cover up the scream Shoto lets out. He slams his fingers in fast, hitting deep, and Shoto squirts all over his fingers and bedsheets. The teen’s body convulsing with the strength of his orgasm. Shoto shakes and cries the entire time, finally getting to cum after being edged for what felt like forever to him.
He gets even more sensitive when Natsuo’s thumb presses against his clit and rubs small circles. Shoto is practically running away from the insane amounts of pleasure coursing through his body as Natsuo keeps him cumming and squirting. The poor thing can barely breath, just gasping in air in between kisses and squirming his hips, trying to get away from Natsuo’s fingers.
When Natsuo finally gives Shoto a break and pulls his fingers out of his sticky pussy he also pulls away from the kiss. Shoto goes limp on the bed, trembling and light headed. Natsuo looks down at the roughly pushed to the side panties and sees just how swollen and wet Shoto’s pussy was. Slick was bubbling up and oozing out of his stretched little hole that fluttered around nothing but air and that pretty clit was twitching slightly.
Like a magnet his fingers softly slid back into Shoto’s cunt and the boy whined, weakly trying to shove at Natsuo’s hand.
“Shh, you’re the one who wanted to cum so bad. Now I’m being nice and making you cum and you don’t want it?” Natsuo coos and teases.
Shoto just whimpers and lets himself get fucked gently. Fingers opening him up and stretching him out while his clit was rubbed. He just barely makes his way through the second orgasm that has him going non-verbal. All he can do is curl up and hold onto Natsuo’s arm while his vision blurs.
“There we go,” Natsuo purrs, finally having had his fill, “Now what do you say to me for making you cum so good?”
Shoto looks up at him exhausted, “Thank you Nii-chan.”