A/N: This has been written for Kinktober 2021 and today's prompt is Size Difference ✨ Due to the nature of this challenge, I've only done the most cursory of proofreads ✌️
Content Warning: age difference, unsafe sex, unhealthy relationship.
P.S. FFN's formatting limits are an attack on me, personally.
Dark eyes, soft skin, an elegant sweep of hair. These are the things that most people see when they look at Haku. It's something they both know. He's seen him make good use of his looks, sometimes for his own sake, often for Zabuza's.
Watching him work? That's something closer to what Zabuza sees.
A sharp tongue and sharper eyes. Gracefully refined movements, strength easy to miss if you're looking the wrong way. He sees a young boy, kneeling over the body of his parent's killer, still and unafraid. He sees himself.
Haku is grown, now, and if he were a better man, that might still be all he sees.
O O O
He spends too much time at Zabuza's apartment.
His social worker says it, the other boys at the home say it. The counsellors press him on it, fishing for the right question to make him crack, all certain Zabuza must be using him. He is, but they're wrong about how. They're wrong about why. They'd never understand that Zabuza uses him because he allows it. They certainly wouldn't believe Zabuza has never touched him, never so much as looked at him wrong.
Zabuza didn't save him, he created him.
When Zabuza had found him he'd felt his life was over. The moment the light faded from the eyes of his parent's killer, Haku's had ended, too. He'd been without purpose, without want, without a reason to go on living. Zabuza had given him one. He'd never tried to change him, tried to fix him, he'd recognized Haku for what he could be and made sure he was fully realized.
It's past curfew. He's nearly eighteen, no one asks where he's been when he comes home late, anymore.
When there's no work to be done, Haku still likes to make himself useful. Zabuza's apartment is always clean, his meals are always warm. Haku doesn't need to worry about where he'll go in two months' time. The social workers try to encourage him to start looking for rooms, offer assistance and pamphlets for low-income housing and government aid. The concern behind their eyes tells him they know, too, they just don't understand. Haku already has a home.
Zabuza thinks Haku has never wanted anything for himself.
He's wrong. There's one thing Haku has wanted for years.
O O O
Haku lets himself in as he always does. This time, he's carrying a bag with him.
Ah, Zabuza thinks. Of course.
The surprise comes later, when Haku bypasses the guest room entirely. He could stop him, the words are on the tip of his tongue and when he catches sight of Haku, radiant in the light as he runs his hands across the bed to smooth the sheets, they die there.
Zabuza has made a life of denying himself petty comforts and desires but this? There's nothing petty, here. He can't deny himself this.
Dinner is finished, the dishes are cleaned. Zabuza gets up to move to the bedroom, Haku follows. Once they're there, everything feels much larger, somehow. More real. The choice in front of them is imposing.
"Tell me what you're looking for, here." Zabuza sits at the edge of the bed, Haku in front of him, on his feet, they're nearly eye-level. Haku shows no sign of nervousness, Zabuza might feel better if he did. Instead he steps closer, runs his fingers up along Zabuza's arms to rest over his shoulders.
"I only want to do whatever will please you. Use me as you like." He knows Haku well enough to know what he's not saying. He feels best existing for someone else, for Zabuza. He doesn't know how to take his own pleasure outside of giving. Zabuza has been selfish, with Haku. Taken him and his unwavering loyalty and pushed as far as he could. He wants to be selfish again, now.
"Is that what you really want?" Haku looks surprised, insomuch as he ever looks surprised. It's not something Zabuza has often asked. He likes to think it's because he taught Haku to think objectively, need before want. Practical over desirable. It's a half-truth, at best. He allows him the space to consider the question.
"I think about you, often." Is how Haku breaks his silence. "Others look at me, touch me. They only seem sad, I never think of them once they're gone." When he focuses his gaze again, there's something in them Zabuza has never seen, before. It makes him burn hot, makes his skin itch with the desire to reach out. Haku's fingers play at his nape and ever touch sends frissons of arousal scattering out through his nerves. "You, though. I think of you often. The thought of your touch-" Haku sways closer, Zabuza feels his heart pick up, "Yes, this is what I really want,".
Alright, then.
O O O
Zabuza lifts him into his lap and when their lips fall together it feels as natural as everything else, between them.
Haku draws his fists tight in Zabuza's hair as the kiss deepens, the older man grips his thighs, waist, hips all hard enough to bruise. He won't be gentle with him, he hasn't been in anything else, Haku would hate it if he started now. His hands are big enough that they almost close around his waist and it makes him shudder against his grip. It's a feeling he knows already he'll crave from here on out. He wants to feel it all, the power Zabuza holds over him. Wants to be reminded that this didn't have to be a choice, he could have taken what he wanted from Haku whenever he wanted, however he wanted. Wants to know the power he holds over Zabuza. Wants to know he waits for him.
Rolling forward, feeling the press of Zabuza against him, Haku feels his carefully cultivated patience being tested. He wants, wants strong enough it goes against all practicality, all he's been taught. This is something new. This is something which is only theirs, he thinks. No one else will make him feel this way. He wouldn't allow it. He can't speak to Zabuza's past, but when their hips meet again he swears to himself that he won't allow anyone else to make Zabuza feel this way, either. He can have his cheap women as he likes, but no one will touch what they have here, now.
He slips down to his knees and Zabuza is already getting himself undone. They work him free, together, and Haku is surprised at his own desire for this, in particular. It's never sounded particularly appealing, more of a service than a pleasure, but the way his mouth goes wet and his stomach heavy at the weight of Zabuza's cock in his hand tells him otherwise. The skin is soft and hot under his grip, not unlike his own, but that's where the likeness ends. Given Zabuza's stature, it comes as no surprise.
Calloused fingers slip through his hair and along his scalp when he leans in to run his tongue over the head. Zabuza groans above him and Haku shivers, dips in to suck carefully at the tip of his cock, pulling back with a kiss before looking up.
"How do I-" The breathlessness of his own voice startles him, somewhat, but Zabuza is already instructing, there's no time to linger over the thought.
"Just cover your teeth with your lips," He runs a finger along the seam of them and Haku catches the tip of it in his teeth. His hair is pulled sharply back and Zabuza grips his jaw tight, grinning. "And don't do that." When he lets him go Haku wastes no time.
It's an odd feeling. Heavier than he anticipated, remembering to breathe while he's busy savouring the slide of skin across his tongue and the eager grip at the back of his head is a chore. The aching creak of his jaw, exhausted by the stretch, drives the insatiable burn under his skin for more. Zabuza pushes him, a little further than he's ready for and he chokes just for a moment, pulling back with a moan. Zabuza seems to enjoy it, so he does it again. Pushes himself forward and lets his throat spasm and contract around the cock stuffed down it, fighting the convulsive desire of his body to pull back. Zabuza's hands clench tight in his hair and it Haku aches with the tension it creates inside of him, to be wanted, appreciated, like this.
O O O
When he pulls him back Haku looks as displeased as he's ever seen him. It's almost enough to pull a laugh from his chest, almost. Instead, he's too busy pulling Haku up into his lap so they can kiss and bite and pull at each other's clothes until they're finally free to feel each other in full. In Zabuza's mind's eye he'd imagined unwrapping Haku slow, appreciating every inch of his body as it warrants, but there will be plenty of time for that later.
There's something animal, raw, about the moans which scrape their way out of Haku's mouth as he squirms back against Zabuza's mouth, as if he's not sure whether or not the sensation has become too much, sometimes. Zabuza drives his tongue forward and digs his fingers further into pale hips, appreciating every sign that Haku has let go. That Haku is, now, himself, as much as he's ever known how to be. That Zabuza is the only one who gets to have him, like this.
"Like this," Haku pants. He positions them so he's on his knees, facing the wall to brace himself, halfway upright. "Make me feel it."
As if that were ever in question, Zabuza thinks to himself as he presses close against Haku. Like this, they feel every inch, every pound of difference between them. It's better than it should be.
He sinks in, slow enough but unrelenting, when Haku sinks forward, trembling his way through the gutteral, torn apart sound which rips from his chest, Zabuza sinks with him. He pulls back, wrapping an arm around Haku's slim waist, the other hand over his throat, not squeezing, only there to feel every breath, every heartbeat, feel the honesty in every subtle shift of his body. Lets Haku take the full weight of him as he puts it all behind his hips and pushes forward again, bottoming out.
In this they fit together seamlessly as they always do. Sinking into Haku's body comes easy as breathing, as if it were made to take him inside.
They go on like that, heavy thrusts, relentlessly deep. Zabuza never reaches down to touch Haku, never pulls back enough to allow him to do it for himself. He wants to prove what they both already know, whatever Zabuza gives him is all he needs. Soon, their skin sticks and pulls with sweat as they lose themselves to the rhythm between them, all the places where their bodies meet and never end. When Zabuza feels the tension pulling too tight to ignore, he removes his hand from Haku's neck to wind it tight in his hair, instead. Pulls his head back so that he can lick the swear from his neck. Dig his teeth in hard, where everyone will see the bruise of it marring his perfect skin.
Haku shivers, shakes, Zabuza pulls a little harder and Haku finally folds, arms collapsing so the end up falling halfway down to the bed. Haku's hair falling forward across his face as Zabuza's hand shoots out to stop them collapsing entirely while Haku writhes and spasms, clenching hard around his cock with a broken, drawn out moan. It's all Zabuza can do not to put a hole in the wall as his own body goes taut, grinding against Haku with bruising force as he rides out his own orgasm.
They catch their breath, the wet sound of Zabuza's cock leaving him prompts Haku to bury his face in the sheets. He's never seen him embarrassed, before. It's something, he thinks as he collapses down beside him, not allowing himself a moment to think before he pulls Haku in close, which he thinks he may never tire of. Something only for him.
A/N: I know I say this every time, but... I need to write them more.
Feel free to say hello in the comments or on tumblr at BitchBot3000 (my fic blog) or GaySasukke (my questionable Naruto sideblog) ✌️