Archive of Our Own ^beta

Deku is hard in his sleep.

It happens all the time. And now that Katsuki has the dubious honor of hearing One For All voices in his head, he’s extremely aware of shitty ghost 1 and 2 noticing the same damn thing.

“Knock it off, I’m trying to sleep.”

“Then sleep,” Second answers, his gruff voice definitely hiding something. “Don’t mind us.”

“I can’t! Not with you two nutcases drooling all over my boyfriend’s cock.”

Yoichi smiles in his mind’s eye. “But I’m not. Yet.”

The way that makes Katsuki’s dick twitch is absurd.

“See, you like it.”

“I said shut up.”

Izuku likes it, too, and that’s the real trouble. Katsuki was so good at keeping it in his pants until he realized just how much the nerd gets off on this.

The way he whined, moaned, begged for Katsuki to use him while he slept. The way Katsuki couldn’t figure out where his virgin-ass boyfriend got his hands on that kind of a hard kink.

The way Izuku confessed, anxious and rambling, that before Kacchan he was basically a virgin, at least… physically. But on the other hand, this guy had had more fucking sex than Katsuki could wrap his rational mind around.

What the fuck does that mean, Deku?

All of them?

When? ANYTIME?

Are you fucking kidding me?

So Deku had been with the other users inside of One For All. Okay, maybe just two of them in particular, but Katsuki’s imagination latched on and tended to run a little wild with it. One big free-for-all pile, that’s how he imagined it. Izuku squirmed and swore on his life that it was just number 1 and number 2, and not recently, not since Kacchan, but… But.

But, dammit, Izuku still wanted to. Katsuki knew that just by looking at his boyfriend’s flustered, freckled face. How many months had Izuku spent as their free use boy? How the fuck was he going to actually, completely, permanently stop?

And so what if Katsuki got so fucking hard at the thought that he could cut his way into a safe. It didn’t change anything, because he didn’t know who these nut-jobs were, and… no. Just no. He didn’t want to think about their hands on his Izuku, physically, spiritually, or otherwise. 

Oh how things change.

First of all, it wasn’t just fucking. Izuku chose Katsuki, that much he made clear, but no doubt he was giving something up— stepping back from relationships that had been fun, yes, but also good, supportive, healing. They doted on him like crazy.

About time Deku got some praise through his skull. And if the Shitty-Ghosts-For-All helped make that happen, he had to admit he was grateful.

More changed after that. A whole fucking world of change.

When Katsuki got his first taste of One For All, he had a lot of feelings about it. He was resistant at first. (I don’t need your fucking quirk! I’ll win on my own!) And maybe, if he’s honest, he could see it being a blessing in disguise. (At least now you don’t have to carry this all by yourself.) 

But there was one revelation Katsuki couldn’t fucking deal with.

Deku’s head-ghosts were… hot. Objectively, actually, seriously hot. The first time the Second gave Katsuki a command, he bit his lip to not moan like a little bitch. Then he flipped him off and didn’t listen to a word of his shitty ghost advice, but the damage was already done.

You fucked them, Deku?

He should really clarify.

Both of them?

Back then, Izuku buried his face in both hands, muffling his words, but the fucker definitely answered: More like they fucked me.

And, right. Okay. That’s what he meant, but Izuku’s gotta come right out and paint the fucking picture. That and Izuku’s mortified little whine left Katsuki with even more questions, each one quickening his pulse.

At the same time?

Wait. Hold on. Does it feel… real?

And the most telling, probably: Can I watch?

(Kacchan!)

(But also: I- um, yes. Yes, oh my God yes, if you wanted to.)

A whole lot has happened since then. The whole thing still makes Katsuki’s head spin, and the jealousy still rears its head. This is new territory for both of them, but Katsuki wants it. And he found out for himself there are definitely benefits to sharing his boyfriend with a couple of frisky ghosts.

Benefit number one: Izuku fucking loves it, and if there’s one thing Katsuki feels absolutely sure about, it’s that Izuku deserves good things. Pleasure, comfort. Love. All the love this life has to offer… and the afterlife too, apparently.

Benefit number two: enough horny fuel to last Katsuki a lifetime. That spank bank is full. 

Ever watched the nerd spasm with two orgasms at once— a physical one, and a spiritual one, too? Yeah, you haven’t, and you won’t, because that’s all his. Bastards have to hold One For All to experience that, and no one’s passing that mantle anytime soon.

He’s seen that sweet face glazed over, drooling, utterly gone from how much cock he’s taken. More than he could physically take, at least without practice, but there are no limits in the vestige world.

He’s heard Izuku’s sweet cries in his mind, while the same nerd lies trembling, whimpering, overstimulated in his arms. Life changing, honestly.

There’s no going back now.

It usually starts when Izuku is fast asleep, because, wouldn’t you know it, getting fucked in your sleep for months has consequences. The mind starts to expect it. Tweedle-Dee and Tweedle-Dumb had fucking pavlov’d the nerd into getting hard while he slept. It was like clockwork, and lately Katsuki has been slipping down the same damn slope himself.

Izuku sleeps, gets hard.

Izuku sleeps, Katsuki gets fucking ravenous.

Izuku sleeps, and Katsuki can’t because he’s weak for the thought of what could happen next, and that’s when the mouthy ghosts pipe up— like slutty sirens, whispering delirious nonsense to lure him into the sea.

Sometimes Katsuki just jerks off to it. Let ‘em watch, fine. He doesn’t owe a couple of ghostly geezers any satisfaction. Jerk off and pass out, smug as the day he was born.

Sometimes he’s not in the mood— whatever his body has to say about it— and honestly? They’re pretty damn good at reading the room. He’ll sleep eventually, after they give it a rest.

And sometimes Katsuki folds like a cheap lawn chair, telling the two of them to do something useful with their mouths for a change. (To which Yoichi responds: Gladly.) 

It only escalates from there. Katsuki knows what Izuku likes— what he craves, what he needs— he knows it better than anyone! The extras can help, sure, but if he wants it done right, he’s gonna have to take matters into his own hands.

Or that’s what he tells himself as he takes his cock out for the third night in a row.

“Fine.” 

Yoichi hums. “Somebody’s in a collaborative mood.”

“Fuck you.”

Second’s smile is all teeth. “Careful what you say, now. You know he’d enjoy that far too much.”

Katsuki is not here to think about bending Yoichi over the bed. This is about Izuku, dammit. He’s gotta focus.

“Just get on with it.”

Katsuki feels the change in the air. He’s here at home in the dark, and at the same time he isn’t, like a double exposure. Izuku sleeps on, curled on his side in Katsuki’s arms; he’s also spread out for the taking on an overlarge bed, with Yoichi crawling up between his thighs.

Christ.

All that pale, freckled skin, splayed against red sheets that exist only in their minds. Izuku naked, vulnerable, his eyes heavy and half-lidded, like he’s hardly aware of this. Katsuki knows that he isn’t— that he’ll come in and out, and it’s anyone’s guess how much of this particular ‘dream’ he’ll remember in the morning.

It used to worry Katsuki so much. How can that be okay? What if it goes too far? But Izuku put those fears to rest.

(It won’t be too far, Kacchan. It can’t. Not for me.)

Another of the nerd’s life-changing confessions: when Izuku wakes up and feels sore, he loves not knowing what happened, not knowing what they did to him. He likes being used, and not having a say.

Katsuki heard the words and basically swallowed his tongue, because fucking hell, how does he just say things like that?

And here Izuku is, dreaming his little head off. Katsuki looks on while Yoichi laps at his cock.

Back in their room, Katsuki slides his hands into Izuku’s waistband, working his boyfriend’s underwear down off his hips. Izuku stirs only a little— he’s pretty much dead to the world, like he usually is when this starts. They’ve done this dozens of times.

His ass is still stretched, prepped from fucking before bed. Izuku is definitely gonna feel it tomorrow, if Katsuki takes him again.

Perfect. The nerd wants to feel it, and Katsuki wants that, too.

“Ninth is such a pretty sleeper,” Yoichi coos, peering up through a curtain of his long, white hair. Pretty bastard, Katsuki thinks. Said pretty bastard licks a broad stripe up Izuku’s dick, catching pre on his tongue like he’s savoring it.

Katsuki palms Izuku’s cock in the dark, a heavy handful. He smears a slick drop across the head, rolling his foreskin down. Something about that has Yoichi making a pretty sound and doing the same. He takes the tip into his mouth and sucks.

Fuck.

Second growls, not in warning but hunger. He’s been hovering off to the side until now, waiting, watching. His expression doesn't give a lot away, leaving Katsuki to stare at the jagged scar that splits the man’s face and wonder what's going on in his head.

In a flash, the scene changes. Izuku is no longer splayed out on the sheets; instead, he’s settled between Second’s legs, lying back over the taller man’s chest. Pinning Izuku there, Yoichi spreads the nerd’s thick thighs and mouths at his balls.

Izuku loves that shit. And they know that— of course they know that, they probably taught him that, dammit. But Katsuki knows a few things, too.

“Dhn—”

In the vestige world, Katsuki’s words still get stuck in his throat. He hasn’t gotten full control of it yet, the why’s and how’s of navigating that space, but so long as he remembers to use his actual mouth in the real fucking world, they can hear him just fine. He clears his throat and tries again.

“Don’t you dare finish him too soon.”

“You know there are no limitations here, yes?” Yoichi asks him, stroking Izuku’s cock slowly, lazily. “No refractory period.”

“Just drag it out,” Katsuki says again. “I want to make him last.”

Second chuckles. “We’re more alike than you wanna admit, kid.”

“I’m nothing like you, old man.”

Second ruffles vestige-Katsuki’s hair and the chills run all the way down his spine, back at home, in the dark. Definitely feels real, he tells himself, echoing his questions from back when this all began. It feels far more lifelike than Katsuki imagined it could— to the point where it startles him every time, every simple touch lighting up his nerves like crazy. No matter how he tells himself that it’s all in his head, his mind can’t tell the difference.

“How about we play a game, Katsuki?” Yoichi nips at the tender skin along Izuku’s inner thighs, teasing with his teeth. “Mm. Something we can all enjoy.”

“What, this isn’t enough for you? Greedy bastard!”

“Oh, it is. But there’s something I’ve been wanting to try.”

“What’s that?”

“Tell me how you want me to fuck him,” Yoichi says, “And whatever you say, I do.”

Katsuki scoffs. That isn’t all that different from the usual. He tends to have opinions, and never hesitates voicing them as suggestions or outright demands. Izuku is his; the extras are sharing, and both have a vested interest in keeping Katsuki coming back to them for more.

“Alright,” he agrees. He's almost disappointed; he expected something better from the horniest phantoms known to man.

Yoichi watches his reaction mildly, unbothered. “So you guide me. And Ni-chan does the same with you.”

“Wait, what? Now wait a damn minute…”

“He’ll tell you how to touch the Ninth, and how to fuck him, and you’ll do as he says.”

Katsuki feels himself break into a sweat. “You know you can’t make me do anything.”

“True,” Yoichi grins, sitting back on his heels. “That’s why it’s a game.”

No. No, that’s crazy. Katsuki’s the one holding the reins around here, in his relationship, not a couple of long-dead lunatics. But then why does his dick throb at the thought?

Katsuki frowns. “Why him?”

Neither one answers, but the Second’s hand curls protectively across Izuku’s chest, plucking and pinching a ruddy nipple, and Katsuki nearly whites out from the head rush it gives him. Izuku’s lips fall open in a gasp as the man rolls the hard nub between his fingers, his other broad hand gently tucking Izuku’s curls behind one ear... like a gentleman.

Shit. Shit, shit, fuck.

“Alright, I’ll play your game. But if I don’t like your attitude, we’re done.”

“That’s what safewords are for.”

“Shut up.”

Second grins. “Don’t worry. I also want to make this last.”

“So what do you want?”

“You get to start,” Second answers.

“Bo-ring,” Katsuki taunts. “I knew you didn’t have it in you. Pathetic.”

Second’s smile is indulgent, dangerous. “Yoichi has been so patient.” The man shifts so that Izuku’s head lolls back against his shoulder, pliant, yielding. As Second spreads Izuku’s legs, Yoichi watches with heated intent, waiting for permission. “You see? And it’s my job to keep him happy.”

“That includes keeping his mouth stuffed full on another man’s cock?” Katsuki scoffs.

Second nods. “That certainly makes him happy.”

“Perv,” Katsuki growls. He holds Izuku close in his sleep, grounding himself in the sensation, remembering what is real, before he looks at Yoichi again. “Alright, champ. Put your mouth on him. You’re gonna suck on the tip, and then sink down nice and slow. No hands.”

Yoichi is on Izuku in an instant, maneuvering his mouth to catch the head of his cock. There’s concentration in Yoichi’s face, all his handsome features pulled taut, focused, as his eyes slip closed. Gently sucking, the movement of his throat sends a rush of heat straight to Katsuki’s lap.

“Finger him open.” It’s the Second who says it, handing Katsuki his first instruction. Katsuki balks.

“Backdoor’s wide open already and you know it.”

Second tsks. “I’m not asking, Katsuki.”

If that brings heat to Katsuki’s face, he’s not about to admit it. Grumbling to himself, he reaches for the tube of lube that he knows he doesn’t need before pressing fingers to Deku’s hole.

He sinks right in. Izuku is wet inside, but of course he is. That’s Katsuki’s come that he’s pressing into, pushing it deeper inside like he’s marking him all over again. Just the thought has Katsuki panting.

“Thought you’d like that,” Second says, and dammit.

Katsuki would snap at him, but he hears Yoichi choking. Bottomed out on Deku’s cock, he’s just… waiting there, moving just enough to breathe before sinking back down.

“Fuck, that’s good,” Katsuki tells him, watching Yoichi struggle. “God, I wish Izuku was seeing this.”

“He’s seen it.”

“I fucking know that,” Katsuki growls. “Hasn’t seen him do it for me, though.”

“Mm, you have a point.” Second caresses Izuku’s face. “We could wake him. Show him.”

“Don’t you dare.”

Second raises an eyebrow. Katsuki doesn’t explain himself— he doesn’t need to. Whenever Izuku wakes up, it makes everything about One For All twice as intense. Katsuki wants to draw this out tonight, not blow his load in thirty seconds. Besides, Izuku gets off on the mystery.

“That’s enough,” Katsuki says instead. Yoichi pops off, panting, chest heaving. There are tears in his pretty green eyes. “Lift his legs. Eat his ass for me.”

“Good idea.” Second lends a hand, bending Izuku’s thighs to his chest and holding him there. This man is just… large. Large hands, long limbs, everything about him fucking massive next to Izuku who is small, dense. Watching him move Izuku so easily is definitely doing something irreparable to his brain.

“Of course it’s a good idea,” Katsuki grumbles. The nerve of this guy. He watches Yoichi swipe a teasing tongue over Deku’s hole, and the way it clenches makes Katsuki’s fingers jerk in sympathy— back in their darkened bedroom, dipping over and over into Izuku’s messy hole.

“Feels good inside, does it?”

“Yeah,” Katsuki answers without thinking. It’s always a little like that: when Second asks him a question, his mouth moves almost before his brain can catch it. But what’s the harm in that? It’s just a game. Katsuki can play along.

“Good. I want your mouth on him now.”

Katsuki’s fingers go still. “What.”

“Your mouth, Katsuki. Down.”

Heat floods through him. It’s not that he doesn’t want to, even if it’s filthy. It’s how Second says it.

“I’m not your damn dog.”

Second purses his lips. “And here I thought you'd want a taste.”

Katsuki doesn’t dignify that with a response. Yoichi’s mouth keeps making wet sounds. He’s enjoying his meal right now, and Katsuki could be, too, if his pride would give just a bit of ground.

Second tilts his head, considering him. “Safeword?”

“Fuck that. You’re not getting out of this that easy.”

“I sure hope not.” Second grins. “I want you to lick the come out of him. Can you do that?”

“Tch.” He ‘can’ and he will, but only because he wants to, dammit. Katsuki shifts down slowly, daring the Second to say a single word about it. It doesn’t work.

“Don’t come back up until he’s clean.”

Katsuki wants to growl, but he can’t bring himself to. Before he can overthink this, he has Izuku's cheeks spread, licking his puffy hole. Outside, then inside where he can taste his own spend. He hums deep in his throat. Filthy. Perfect. Mine.

Katsuki can hear Yoichi eating messily, and he’s not about to be outdone. He picks up the pace, getting lost in it as Izuku shifts and mumbles in his sleep. It drives Katsuki wild, having the nerd this way: relaxed, loose, gently squirming on his tongue. He knows his grip on Izuku’s ass is too hard, definitely bruising, but he needs that to ground him.

“You like the taste, boy?”

Katsuki grunts, licking deeper. He does, he fucking does, but he’s not answering that.

“You don’t have to say it,” Second says, his smile smug and knowing. Katsuki sees that look in one world, even as he shuts his eyes tightly in the other. “I know you.”

He watches as the Second pets the backs of Izuku’s legs, drawing circles with his thumbs. The man bends to press a kiss to Izuku’s temple. The sight lights Katsuki up out of nowhere.

“I know you better than you think.”

Huh? Katsuki makes an unintelligible sound in the vestige world, trying and failing to find his mouth. In the darkened bedroom, his mouth is busy.

“I’ve been watching you for a while.”

Me? Why?

“Fuck him with your tongue now. Go on, in and out.”

Katsuki does it, plowing Izuku with his tongue. His face is a mess. He’s working up a sweat, and he really wants to lose the rest of his clothes, but that can wait.

“That’s good, Katsuki. So good, well done.”

The words slug him in the chest. He moves his tongue eagerly and doesn’t care if he’s smothering himself. He’s riding the wave of whatever the fuck this is, whatever this is becoming.

“That’s enough, now. He’s ready,” Second says, his voice a deep purr. Katsuki finds himself salivating at the suggestion: ready for the main event. Katsuki is ready, too.

First, he strips off every stitch of his clothing, and mops up his face with his discarded shirt. It’s a gremlin thing to do, and Deku would probably giggle to see him stoop to that level in a rush to get his cock wet, but if he doesn’t fuck Izuku in the next ten seconds he’s going to lose his mind.

“I want you to listen closely, Katsuki. Slick yourself up. When you’re ready, fuck between the boy’s thighs.”

“Huh?”

“You heard me,” Second says. “Just a little appetizer.”

Katsuki doesn’t need an appetizer. He’s diamond-hard as it is, and Izuku’s body is right here in his hands, open and pliant. But he’s moving to comply before he can think about it too deeply. Deku does have excellent thighs. Pulling his legs together, lining up, Katsuki pushes his lubed-up cock into that tight space and groans. His nerves are on fire. 

“I believe Yoichi is waiting on your instructions.”

“Shit,” Katsuki mutters, tuning back in to find the other man right where he left him, eating Izuku’s hole with the most depraved expression he’s probably ever seen. Probably because he’s been staring at Izuku’s leaking dick the whole time. “Alright, champ, that’s enough. Time to fuck him.”

Yoichi shudders as he pulls away. As he rises to his knees, Katsuki gets an eyeful of the man’s cock, long and slender with soft white curls at the base. He’s been leaking a puddle on the imaginary bed.

Not that Katsuki cares. He’s just... appreciating the view, that’s all.

“Easy there, tiger,” Second says when he gets overexcited. His hand finds Katsuki’s shoulder. “Nice and slow.”

Katsuki slows the pace of his bucking hips to something more deliberate and measured. It’s even harder to do that when he feels the man’s strong grip, the sensation reaching him from another world.

“Good, that’s good. Close your eyes and feel it.”

Except that closing his eyes snaps him back into the vestige world, with a perfect view of Yoichi notching Izuku’s hole. He presses forward slowly, inch by inch, until he’s buried to the hilt. 

Izuku sighs. His lips part. Katsuki wants to lick into his mouth.

Katsuki knows it isn’t real. He knows that body is one that exists only in their minds, that his boyfriend is still snoozing in his arms, the real Izuku, in the flesh. But it messes with his head to watch this man slip into that hole with no real resistance— like a key in a lock, a perfect, easy fit, like his body is welcoming him home.

That’s how Katsuki feels with Izuku, fucking often enough that he's is ready for him, slick from the last time, waiting for the next time.

“That’s right,” Katsuki says, his voice graveled-out as he watches. He grips the meat of Izuku’s thighs as he speaks, steadying himself. “A little slower. Draw it out.”

Yoichi groans. Second laughs.

“Is that hard, angel?”

“I’m… fine…” Yoichi answers with some effort. He looks overwhelmed by it, the pull of Izuku’s body inside.

Katsuki could be feeling that himself, but instead he’s doing as he was told— teasing himself, so close and yet so far. His cock squeezes through the breach between the tops of Deku’s thighs, tucked close to his ass, grazing his taint.

He feels dizzy with it, wanting more, but he knows for certain that if he whines for more Second will take pleasure in making him wait even longer. Hell, that’s probably what he would do.

He’s not saying they’re alike, though. They aren’t at all. Except maybe in this. Hard to decide if that makes it better or worse; all Katsuki knows is that every instruction from Second has him half out of his mind.

“I’ve got a challenge for you, Katsuki.”

“Uh. Okay,” he pants. “Whatcha got?”

“I want you to fuck him, but just the tip.”

Katsuki screws up his face. “What?”

“Fuck him on just the tip of your cock. No deeper than an inch or two.”

“Why?”

“Because it’s a tease. And you know he loves to be teased.”

Don’t tell me what my boyfriend wants, he thinks acidly. I know that better than anyone.

He does, and yet he never thought of doing something like that.

“Alright,” Katsuki agrees. “Just the tip.”

Pressing in, he realizes his mistake. Izuku’s body is sinfully inviting, hot and yielding, and Katsuki cannot believe he gave up the freedom to chase that sensation all the way down. It might be the stupidest thing he’s ever done.

Katsuki takes a soothing breath, moving slowly and deliberately to keep a handle on the driving impulse. He’s no quitter; he’s determined to make this work.

Izuku shudders against him, shifting his hips subtly in his sleep. It makes him want to crow.

“Like that, baby?” Katsuki murmurs, pressing a kiss to the top of his spine. His voice is ragged, and fond in a way that he’d deny in a court of law. 

But it’s just them, him and Izuku… and a couple of freeloaders he couldn’t hide from if he tried. (And there was a time he did try.)

Peeking into the other realm, Katsuki sees Yoichi with his eyes down in concentration, watching his cock piston in and out of Izuku. Good, Katuski thinks. He wants a piece of that, too— but there’s something deeply satisfying about taking his time, feeling Izuku shiver the more he toys with him.

He stretches his rim, popping the head in and out of his loosened hole. Izuku mewls. Katsuki licks his lips, wondering what it feels like on the other end.

Yoichi’s laughter is musical and so endeared.

“What’re you giggling about?”

“I think he likes it.”

“Of course he likes it,” Katsuki sneers. “This nerd is fucking insatiable.”

“Him, too.” Yoichi grins. “Trust me, it’s as good as you’re imagining.”

“Get outta my head, you mooch!” Katsuki’s ears burn. “It’s almost like you’re not busy enough over there. How ‘bout you bounce him in your lap.”

Second watches all of this with a mild smile. He helps lift Izuku up, maneuvering him into Yoichi’s arms. The nerd’s head lolls forward over Yoichi's shoulder like a ragdoll. Christ.

“Ni-chan.” Yoichi holds Izuku by the thighs. “Give me a hand?”

“With pleasure,” Second agrees. He strokes Yoichi’s dick slowly, a couple of times, before lining him up to start again. Hovering there, he takes a moment to kiss his lover’s lips, bent over Izuku’s bare shoulder. Katsuki’s cock jumps as he watches their mouths, and Izuku’s slow, easy breathing.

“Fuck him,” Katsuki demands. Pleads? It’s damn close.

As Yoichi lowers him down, Izuku squirms. Visibly, and tangibly, too— arching in Katsuki’s arms in their shared bed. He squeezes him, and lets his cock slip deeper, just a little deeper to feel the way Izuku clenches around him. He knows that’s Yoichi’s doing, and part of him can’t believe he gets to feel it.

Katsuki sucks a mark into Izuku’s shoulder and wants so badly to bite him instead. He just needs something, anything, to ground him as breath quickens and his toes curl.

“Go on, Katsuki,” Second says. “You’ve been so patient.”

Thank fuck. By the time Yoichi starts to find a rhythm, Katsuki bottoms out with a groan.

“Ah fuck, yes,” he sighs, shutting his eyes. He can feel it in a strange way— every thrust punctuated by Izuku’s unconscious reactions, all of which Katsuki feels with his dick. “He likes that. Shit, I can feel how much he likes that.”

“Move, Katsuki.”

“Hang on.” He whispers it, on account of his pride, but he knows they’ll hear him just fine. If he moves now, he’s definitely going to come.

Yoichi’s eyelids flutter. The groan he makes is sinful, bouncing Izuku a bit harder in his lap, draped against his chest. Second helps guide Izuku’s body, shares the weight. The sight of those large hands curling around his boyfriend’s waist has Katsuki biting his lip. He can almost feel it. Almost like he’s there between them.

They could fuck him sometime.

What would it be like? Katsuki wonders. Dangerous question around here. It’s kind of an ‘ask and you shall receive’ type of deal. He’s not really asking, not yet, he’s just… playing it out in his mind.

It’s not the most practical wish, anyway, at least for the time being; his vestige body wasn’t quite solid yet. He can hardly use his mouth there, let alone anything below the belt. Izuku said it was like that for him, too, until he inhabited One For All fully. First his mouth, then his chest, then…

It’s only a matter of time.

Katsuki always figured his first time would be with Izuku. Maybe someday they’ll outgrow the really desperate stage— where the minute they get each other alone, they both order their usual without even looking at the menu.

If it ain’t broke, don’t fix it. It’s not like they haven’t been adventurous, for crying out loud.

He’s still thinking about it as he starts to move. Rocking his hips, taking Deku slow and deep, he imagines all the many things the four of them could get up to.

“I don’t mean to pry,” Second says.

Katsuki grits his teeth. 

“You want to be in his place?”

Katsuki shakes his head, catching his breath against Izuku’s shoulder. His head is swimming. “I’m not that crazy.”

“Touché.” Second keeps his eyes on Izuku, his thick hips in Yoichi’s hands, but Katsuki feels like he’s looking at him instead. Like he’s seeing right through him. “You don’t have to choose.”

“What do you mean?”

“You can have it both ways.” Second smiles. “Even both at the same time.”

“Imagine that, huh?” Yoichi pants with effort. “You fuck the Ninth, while we take turns fucking you.”

Katsuki’s hips stutter. Shit, fuck, that’s. No, that’s not how this works. “Greedy fuckers,” he grunts. “Coming after me too?”

They don’t answer, probably because it’s useless to argue about it. He can’t deny that he was thinking it first, even though they mind their manners and let it drop.

Someday they could. Someday, in the not-too-distant future, they could fuck with him, too. Like they have done with Izuku.

Katsuki stops to get more lube. The extras don’t need to worry about physical limitations like that, but Katsuki reminds himself they’re missing out on the real thing.

Speaking of limits, Yoichi is entirely out of breath.

“How’re you doing there?” Second tucks a long strand of white hair behind the other man’s ear.

“He’s- heavy—” Yoichi’s voice strains.

“It’s all in your head, angel,” Second smiles, cupping Yoichi’s cheek. “You’ve got more in you, I know it. You’re doing so well.”

God, who wouldn’t listen to that? Katsuki’s dick throbs. He might be bruising Izuku again; it’s hard to keep track. He just keeps thinking about it, over and over— the things they could share.

“You could help him out,” Katsuki says to Second. It sounds more casual than he feels.

“Mm, but I like watching him struggle.”

Yoichi half-laughs, half-whines, and that sound also goes straight to his dick. “My hero.”

It’s the pat on the cheek that drives it home, as derisive as it is fond. Yoichi’s green eyes stretch wide, pupils blown, and Katsuki feels that they’re going to kiss before they do— an impulse, a longing, felt moments before they move. Or was that his own impulse? No, no, clearly not. That's all them; it's as though their thoughts are reaching him, too, floating just out of reach.

Second’s hand trails down Izuku’s spine.

“Go on, fuck him. You can share him, can’t you?” Katsuki asks. “I want to see that.”

“Needy today, aren’t we?” Second plays with Izuku’s hair, pushing curls away from his neck to kiss and suck that tender spot. “That’s not how the game works.”

“I know, just— fuck. Throw me a bone, will ya?”

He just… needs it. He needs to see the Second fuck Izuku, bounce him in his lap, the two of them sharing that hole.

“Very well.”

The picture shifts, and with it Izuku is raised and dropped back down like it’s nothing. It only takes Izuku’s startled cry for Katsuki to know he’s fully seated. Second shifts his grip, holding Izuku close. All that, and the tip of Yoichi’s cock is already nudging at his entrance, next in line.

In their darkened room, Izuku trembles in his sleep. Katsuki kisses his neck and behind his ear, trying to focus as he keeps up the rhythm of his hips.

“You’ve got this, baby, you can take it.”

Izuku murmurs a whine.

“You can take it all.”

“Slower, Katsuki,” Second tells him, and the command pulls his spine taut in an instant. “Slow and deep.”

Katsuki grunts and changes his pace.

“Follow Yoichi now.”

“Huh? I thought I was bossing him around.” 

“You got to ask something of me, didn’t you?”

Katsuki grits his teeth.

“Just a little trade for throwing you a bone.”

“Fine,” he grunts, his breath leaving him in a rush. He has to really focus to see Yoichi in one world and match his hips in another at the same time; if he’s not careful, his vestige will try to shimmy forward and hump Yoichi’s leg. Good thing Katsuki likes a challenge.

Yoichi moves slow and deep, stretching Izuku’s hole wide around two cocks. Second does seem more affected now, his face twitching as Yoichi thrusts into that tight space along the other man’s length.

“Angel, that’s good,” Second tells him, grinning lazily at the love of his life. Afterlife? Whatever, no need to overthink it.

Yoichi lets it build. The strokes aren’t much faster, but sharper, moving in punctuated thrusts. It’s a thrill, how Izuku’s pulse flutters in response. Katsuki matches the snap of Yoichi’s hips as best as he can, inching closer to them all the while.

He could be sharing Izuku like this. Thrusting in, rubbing his cock with the Second’s inside his boyfriend’s tight body, the nerd somehow making room for them both.

He lets himself think about it. Loudly and in detail, if he’s honest— as if these nosy fuckers mind that at all. They lap it up like cats with cream.

“That’s it, Katsuki. Really drive into him.”

He wasn’t really doing it consciously, slipping so easily to match Yoichi’s pace, taking Yoichi’s place in his mind.

Second starts playing with Izuku’s nipples again, pinching and rubbing them. They look so raw now, almost bruised, and Katsuki’s mouth waters at the sight.

“Follow my hands,” Second says, “while you follow his pace. Ninth’s nipples are so sensitive.”

“I know that, idiot.” Katsuki isn’t about to be outdone by this man. He reaches up beneath Izuku’s nightshirt to find his nipples stiff, swollen. The first brush has Izuku trembling in his arms. “Ah hell, that’s good.”

“Like this.” Second demonstrates how he rolls his fingers.

Katsuki bristles. He knows how to tease Deku’s tits, alright? But he swallows it back and gives it a go anyway, matching the older man’s fingers, following when he switches from one side to the other. Izuku pants like a bitch in heat— in the vestige world, where he’s double-stuffed, caught between the two men. But his voice catches in the real world, too, his shaking breaths coming too fast.

“Izuku?” Katsuki whispers in his ear. “Baby?”

Nothing. Izuku tenses and squirms, trembles as Katsuki drills him with his cock, but the nerd sleeps through all of it.

“Katsuki.”

“Hm?”

Second’s eyes are on him, as he holds Izuku’s thighs open wide for Yoichi to fuck. Izuku’s flush deepens all down his freckled chest and he moans, arching his back. He looks like a fucking dream. His nipples almost look lonely now.

“Can you use your mouth here yet?”

“Not sure.”

“Maybe you just need something to focus on.” Second glances down at Izuku’s chest, then back up to meet Katsuki’s eyes. “And I’m fresh out of hands.”

Katsuki's vestige crawls forward before he can think about it. “So you want me to…”

“Suck.”

He tries, clumsy as it is. It’s tricky to concentrate well enough— cock buried in Izuku, his senses following all of the nerd’s harsh breaths. That’s real, alive, home. 

In comparison, his vestige body feels weird, shifty, incomplete. Intriguing and new, like an uncharted place— but it’s still him, right? It’s still them.

Katsuki keeps his eyes open and fixed on Izuku’s skin. He’s tracing the familiar pattern of freckles and scars, stretch marks from bulking up insanely fast. That’s real. That’s their history, places Katsuki knows by heart.

He knows Izuku— every inch of him, or damn near. He knows the smell of his skin. He nuzzles his face against Izuku’s pecs, bouncing with the roll of Yoichi’s hips. Katsuki feels his way along with his cheek, his chin. His lips, his tongue, taking shape.

When he manages to latch his vestige-mouth onto one swollen nipple, it’s the Second who sighs in satisfaction, inordinately pleased. He beams down at Katsuki.

“Good boy.”

It punches him in the throat. That’s the only explanation he has for the choked whine he lets out because, holy shit. He wasn’t ready for that. He wasn’t ready to like that.

Second threads his fingers through Katsuki’s hair, petting, holding. It spurs him on more, working Izuku’s sensitive tits. His nerves are on fire as it is, feeling the drag of Second’s fingertips across his scalp.

“What a sight,” Second praises. Katsuki preens.

Maybe he’s getting the hang of splitting his focus. It’s instinct more than anything: suckling at Izuku’s chest, fucking him, doing both at the same time because he needs both like air. His pace is unhindered now, all his own.

Yoichi starts following him again. Katsuki didn’t give any instruction, didn’t need to; Yoichi mirrors him anyway, happy to let Katsuki take the lead. When they sync up, Izuku clenches again, harder than before; Katsuki can’t help but moan.

“Katsuki.” Second's grip in his hair tightens.

“Huh?” He lifts his head in the vestige world, surprised to see the Second’s eyes blown like that. He’s even more surprised when the man pulls Katsuki up and kisses him.

Fireworks go off in his brain. It’s not a gentle kiss— biting, hungry. Yoichi moans at the sight, hips bucking like a bronco. And Katsuki feels it because he’s there, too, inside with him. With them.

It’s insane. It’s so much to take in, and he can’t process near half of it. All Katsuki can think is how his stubble grates and his tongue is scorching hot in his mouth. He chases it, a whine leaving his throat when the man pulls away panting.

“Such a good boy, Katsuki,” Second breathes against his mouth, kissing him again, slower now. It does something funny to his brain. “My good boy.”

“Fuck.” Katsuki grits out the word— only he says it out loud, groaning right in Izuku’s ear. Izuku arches his back. Katsuki fucks him, and moans for him, and dammit, he moans for the Second, too.

“That’s it.” Second drags him in again and kisses him deep, pulling his hair just a little. Just enough. “Fuck, Katsuki. You wanna come, boy?”

“No,” he manages to say. It sounds about as ragged as he feels. 

“No?”

“Not without Deku,” Katsuki answers, because it’s that simple. He drills into Izuku, and knows he’s gotta be close, too. Even his One For All stamina can’t outlast the three of them.

“You’re holding out for him, then? Sure that you can hang on that long?”

“Of course I can, what kind of shit are you talking—”

Talking, he’s talking. Out loud. Izuku stirs again, shifting his hips restlessly where Katsuki’s hips slap the backs of his thighs. Shit, he’s waking up now. It’s happened before, but it’s so intense when he does. He’s not ready for that, not this moment.

Shit, shit.

“Make him come,” Second commands. “Hurry.”

Katsuki goes to move his hands, but he feels Second’s grip on his wrists in the other world, holding him back— if more in theory than in practice.

“Make him come like this.”

Oh hell. Katsuki has been hitting his prostate, sure, but he shifts back in the hopes of nailing it with every thrust. He hauls Izuku close, holds his hips so hard they will be bruised for sure, and tries desperately to finish him off.

Izuku gets even mouthier in the vestige world, cries and moans, and a broken litany of Kacchan, Kacchan, Ka-cchan.

Katsuki feels Second grab him by the skull. Izuku too, dragging them together, until Katsuki tastes his boyfriend’s mouth and swallows his breath. His brain lights up like a circuit board.

“Kacchan!”

He spoke. But they’re still kissing. Katsuki is eating from his damn mouth, greedy as he is, but that’s only their vestiges; in the dark of their room, he’s thrusting from behind, hanging onto Izuku and panting over the nape of his neck. Izuku is awake, shuddering, crying out his name.

“I’ve got you, baby, I’ve got you.”

“Kacch'AH! Don’t stop, don’t stop—”

Katsuki comes. He comes so fucking hard and for so long, he’s sure his heart stops. Systolic, squeezing. But he can’t stop now, not with Izuku begging him for more.

Not with the Second rasping in his ear, “Hang in there. You’re not done yet.”

No, he isn’t done, and he’s no quitter. Katsuki buries his face in Izuku’s sweat-damp curls, breathes deep, and never stops bucking his hips.

“Good boy, that’s it,” Second praises. His words drip like warm honey down his throat, and one broad hand keeps holding his head, guiding the way he and Izuku kiss— less and less coordinated, that’s for sure.

Izuku’s vestige convulses and only then does Second pull Katsuki’s head up by his hair.

“Ah!”

“Look at them now.”

Katsuki couldn’t possibly look away from the sight: Yoichi’s head tipped up to the sky, shaking as he pistons his hips in an uneven rhythm. The sounds and sight of Yoichi finishing inside Izuku. Slutty siren, for sure— he pulls Second along after him only moments later.

And there’s Izuku, kissed-red and rubbed-raw all over, held aloft by the other two with his wide eyes locked on Katsuki. There’s come splattered across his chest and love bites on his nipples. Some of his curls are matted to the sweat on his face, his breaths coming in little gasps.

He’s beautiful.

“Aren’t they?” Second answers. “Beautiful.”

Maybe he actually said that. Maybe he thought it too loud— he doesn’t have a clue. Second runs his fingers through Katsuki’s hair, soothing the sting from where he pulled.

It’s… nice. It reminds him of Izuku, in a way. He does that sort of thing sometimes, holding Katsuki, petting him, as though Katsuki is the one who needs comfort after he just blew out Izuku’s back. (And maybe he does.) 

Katsuki doesn’t mind it. It lets him revel in the moment just a little longer, and it’s surprisingly easy to let the Second handle him the same way.

Izuku is practically non-verbal, blinking and panting. Gently squirming as their hands traverse his skin. No destination now, just taking it all in. Izuku practically purrs, muttering sweet Kacchan’s into his pillow, and one very soft, I love you.

“You too, nerd.” Katsuki bends to kiss him, and the double-exposure feels extra sweet— Izuku’s soft lips in one realm, and the humid warmth of his nape in another. He can have both. He doesn’t have to choose.

Izuku reaches out and trails his fingertip across Katsuki’s lip. New, he asks without asking. Katsuki nips at his finger with gentle teeth. It sure is, he says without saying.

The silence is gentle, not awkward, except for how Katsuki is trying not to hold his breath.

“So, some things happened.”

Izuku’s head shifts on Second’s shoulder. The movement bares his throat, sultry little thing that he is, like he can’t even help it.

“Good things?”

Katsuki huffs a laugh. “Yeah, nerd. Good things.”

Izuku hums. “I like good things.” He’s so fuck-drunk, it’s almost funny. Izuku bites his lip. “Kacchan wants to tell me?”

He does. He doesn’t need to; Izuku’s blanket approval is earnest as hell. As much as he’s struggled to understand and accept that, Izuku places his absolute trust in Katsuki’s hands. (In their hands, too. Both feel true.)

The telling is purely for Katsuki’s peace of mind. Izuku, knowing that, blinks those doe-eyes at him. “‘M listening.”

Except he doesn’t know where to start. He has to wonder if it shows on his face, how affected he is by the Second’s hand in his hair, massaging, petting. His mind, fucking blank.

He doesn’t know what to say, but showing feels doable.

“C’mere,” Katsuki mutters. It’s barely audible, but the intent must be clear because the Second meets him halfway, kissing Katsuki over Izuku’s shoulder.

Yes. Yes, this. More of this.

Izuku gasps. Intoxicating as that is, his squirming is a fucking liability. Katsuki is far too overstimulated for this— but it’s gratifying, too, how Izuku responds inside and out.

Second feels it, too, smiling into their kiss. He deepens it, licking into Katsuki’s mouth and flooding his face with heat. Yoichi whines. And Izuku—

“Oh my God, you guys! I’m trying really hard not to get worked up again, you really should warn me if you’re going to do that and—”

So, the nerd’s brain is back online.

“How have you not had enough? Christ, Deku.”

“I’m just so happy, Kacchan! I’m happy for Ni-san, too! This has been a long time coming, you know?”

“What? No it hasn’t. Shut up.”

“And— wait, oh my God, what else did I miss?”

So now he wants to know everything. First time for everything. Katsuki grins and pats his cheek.

“That’s for me to know and you to find out.”

“Kacchan!”

“Hey, I didn’t make the rules. You love a good mystery, don’t you, baby?” 

Izuku whines, whispering to himself, Don’t get hard, don’t get hard, don’t get hard. It’s a lost cause, but A for effort.

Katsuki kisses him, filthy, sloppy, and imagines the taste of the other man is there in their kiss.

Yoichi kisses Izuku's cheek next. “I’m tapping out, sweetheart.”

“M’kay,” Izuku pouts.

The picture shifts around them. Second manages to arrange himself and Izuku on their sides, spooning. Then there’s Katsuki, facing his boyfriend, stretched out in the middle of the wide bed. Yoichi curls up like an overlarge cat at his back, taking advantage of how pliant Katsuki is right now to sneak in a cuddle. (Devious, pretty bastard.) 

(He’ll allow it.)

“Ni-san.” Izuku’s breath hitches as they settle. It’s not lost on Katsuki that the Second keeps his cock buried inside.

“Is that what you want, bun?”

“Yes.” Izuku’s throat bobs, his pretty lips half-parted. He’s looking at Katsuki, making sure he’s okay with sharing this, too. He’s a little surprised that he is.

“He’ll keep you full here,” Katsuki says, choosing this moment to grind his hips a little— in the dark, in their bed, felt but not seen. “And I’ll keep you stuffed back at home.”

Izuku’s mouth falls open. “Oh, please, Kacchan! I’ll be so good. I’ll hold still, I promise, I—”

“Shh...” He holds a finger to Izuku’s lips. “I mean, better enjoy it. You won’t be sitting for a week.”

Izuku makes a garbled sound in his throat. And, yeah, yeah, don’t threaten me with a good time.

“So what’s a little more?” Second agrees, conspiratorially. “Round two?”

Katsuki arches an eyebrow. “You too, huh? Jesus. Fuckin’ pays to be dead, I guess.”

“Well, I’m dead tired,” Yoichi complains, jostling Katsuki by the shoulder. “Just let me rest my eyes for a while.”

“You- you wore out Ichi-san?” Izuku stage whispers. “What did you do?!”

“You,” Second and Katsuki answer at almost the same time. Okay, maybe they have a few things in common.

“But you will tell me sometime, won’t you, Kacchan?”

“Greedy little shit, just go back to sleep,” he grumbles, and kisses him. He wouldn’t have it any other way.