The acceptance didn't come fast, and it didn't come easy.

It was a slow, thawing thing, like frost retreating across a windshield under hesitant morning sun. The first Christmas after the confession passed in a stiff, separate silence, Izuku and Katsuki exiled to the guest house while the main family gathering carried on without them. The second Christmas, they were allowed at the table, but the air was brittle, conversations skipping over them like stones on a frozen pond.

Inko was the last fortress. Her hurt was a vast, silent ocean. She’d look at Katsuki, her little brother, and her eyes would hold a betrayed confusion so profound it made Izuku’s chest ache. She’d look at Izuku, her son, and see a stranger who had chosen a path she couldn’t map.

The turning point came in the spring, in Toshinori’s quiet study. Katsuki stood before him, not as a defiant bro-in-law, but as a man stripped bare. “I know what I am,” Katsuki said, his voice gravel. “I know what I took. I’ll spend every day of my life making sure he never regrets it.”

Toshinori, skeletal and tired, had just looked at him for a long time. “You already broke it,” he finally said, not unkindly. “You don’t get to fix it. You just get to be careful with the pieces.” He sighed, a weary sound. “He chose you. However messed up that is… it’s his choice. I won’t lose my son to protect him from a choice he’s already made.”

When Inko learned her husband had, in his way, given a blessing, the fight left her shoulders. She didn’t approve. She never would. But she loved them, and the alternative—an empty chair at every holiday—was a colder future. She started leaving two extra plates out for dinner when they visited.

Life, stubbornly, went on. Izuku graduated, his cap and gown a blur of green, Katsuki’s proud, crimson gaze the only thing in focus. They found an apartment, a small place that smelled of new paint and their mingled scents. They built a life. It was ordinary, and for them, that was the miracle.

The most surprising stitch in the torn fabric of their old lives was the bond that formed between the two people they’d left behind. It was Hitoshi, ever observant, who mentioned it first over coffee. “You know Shoto and Eijiro are hanging out, right? Like… a lot.”

It turned out the two men, one nursing a shattered heart, the other a broken marriage, had found solace in shared, quiet understanding. Their friendship, built on the wreckage Izuku and Katsuki had made, deepened into something else—something steady and gentle. Eijiro, with his uncomplicated heart, didn’t drag out the divorce. It was amicable, almost peaceful. By the time he and Shoto quietly moved in together, it surprised no one in their fractured circle. It just made a sad, kind of sense.

Three Christmases after the disaster, the family gathering felt almost whole. Laughter came easier. Eri, now a bright-eyed teenager, teased Hitoshi about Denki. Hizashi’s voice wasn’t the only one filling the space. Katsuki stood by the fireplace, a beer in his hand, and for the first time, he didn’t look like a bomb waiting to go off. He looked like he belonged.

Izuku was in the kitchen, helping Inko dry dishes. She nudged him. “He’s staring at you again.”

“Who?” Izuku asked, though he knew.

“Don’t be dense.” She handed him a plate, her touch lingering. “It’s the same way your father looked at me. Before.” She didn’t say before what. She didn’t need to.

Later, when the house was quiet and they were bundled in coats on the back porch, Katsuki didn’t get down on one knee. He just turned to Izuku, the cold air turning their breath to ghosts, and held out a small, black velvet box. His hand was steady. His eyes were not.

“I’m already yours,” Katsuki said, the words raw in the winter silence. “Might as well make it official, you damn nerd.”

Izuku didn’t say yes. He made a choked, wet sound and launched himself forward, knocking the box from Katsuki’s hand as he wrapped his arms around his neck, kissing him with a fervor that tasted of salt and promise. They stumbled, laughing against each other’s mouths, until they found the box in the snow. The ring inside was simple. A band of dark tungsten, inlaid with a single, vibrant stripe of green.

Their wedding was small. In the backyard of the family home, under a canopy of string lights. Inko cried, but she held Toshinori’s arm and didn’t look away. Mitsuki, sharp-eyed and dry, gave Katsuki a brisk nod that meant everything. Shota officiated, his delivery gruff and efficient, but he squeezed Izuku’s shoulder afterwards.

And Shoto came. With Eijiro. They stood together, hands loosely linked. Shoto’s gaze was calm, his smile small but genuine. When he hugged Izuku, it was tight, and it was a goodbye, and it was a blessing all at once. “Be happy,” Shoto whispered, and Izuku knew he meant it.

Now, in the borrowed luxury of a hotel bridal suite, the door clicked shut on the last well-wisher. The silence was immediate, a thick, velvet curtain falling around them. Izuku leaned back against the door, still in his tailored suit, his green hair a riot against the dark wood. Katsuki stood in the center of the room, having already torn his tie off.

“Come here,” Katsuki said, his voice a low command.

Izuku pushed off the door. He didn’t walk. He stalked, the nervous energy of the day coalescing into a single, hot point of intent. He stopped a breath away from Katsuki, his eyes wide and dark. “Uncle Kacchan,” he whispered, the old title a brand-new provocation.

Katsuki’s control snapped. His hands came up, cradling Izuku’s face, and he kissed him like he was drowning. It was all teeth and tongue and possession, a claiming that had been waiting for years. Izuku moaned into it, his hands scrambling at Katsuki’s jacket, pushing it off his shoulders.

“Off,” Katsuki growled against his mouth, pulling at Izuku’s clothes. “All of it. Now.”

They undressed each other in a frantic, clumsy dance, fabric tearing, buttons pinging against the floor. Then they were skin to skin, chest heaving. Katsuki’s gaze raked over him, over the freckles, the soft curve of his small chest, the lean lines of his waist, down to the smooth mound between his thighs. His hairless shaved pussy already dripping.

“Mine,” Katsuki breathed, the word a vow and a threat.

“Yours,” Izuku gasped. “Always.”

Katsuki backed him toward the bed, his large hands hot on Izuku’s hips. When Izuku’s knees hit the mattress, he fell back, spreading his legs in open invitation. Katsuki stared down at him, at the flushed, hairless pussy glistening with want. He dropped to his knees at the edge of the bed, his breath ghosting over Izuku’s soaked flesh.

“Look at you,” Katsuki murmured, his voice rough with awe. “My pretty bride. Dripping for me already.”

He didn’t use his fingers first. He lowered his mouth and licked a slow, brutal stripe from Izuku’s entrance all the way up to his clit. Izuku shrieked, his back bowing off the bed. Katsuki ate him like a man starved, his tongue delving inside, fucking him with it, before swirling around his throbbing bud. The wet, obscene sounds filled the room, mingling with Izuku’s broken sobs.

“Kacchan—I’m gonna—!” Izuku’s warning was a strangled cry.

“Do it,” Katsuki ordered, his mouth sealed over him. “Squirt for me. Let me taste it.”

The command tipped him over. Izuku came with a shattered scream, his body convulsing as a hot gush of liquid soaked Katsuki’s chin, his throat. Katsuki drank it down, groaning, his own hips rutting against the air. He didn’t stop, licking him through the tremors, until Izuku was whimpering, oversensitive and pushing weakly at his head.

Katsuki rose up, his mouth glistening. He wiped his chin with the back of his hand, his eyes blazing. “Again,” he said. “You’re not done.”

He climbed onto the bed, his heavy body settling between Izuku’s thighs. The thick, blunt head of his cock pressed against Izuku’s soaked opening. He didn’t push in. He just rubbed it there, through the slickness, coating himself.

“Look at me,” Katsuki said.

Izuku’s eyes, hazy with pleasure, found his.

Katsuki pushed inside.

It was a slow, inexorable stretch, a burn so perfect it stole the air from Izuku’s lungs. His mouth fell open in a silent cry as Katsuki filled him, inch by impossible inch, until their hips were flush, until he was buried to the hilt. They stayed there, locked, Katsuki’s forehead pressed to Izuku’s, both of them shaking.

“Fuck,” Katsuki choked out. “Izuku…”

“Move,” Izuku begged, his nails digging into Katsuki’s back. “Please, Uncle, please fuck me.”

Katsuki pulled out almost all the way, then drove back in with a brutal snap of his hips. The pace was punishing from the start, a hard, deep rhythm that had the bed slamming against the wall. Each thrust punched a wet, gasping sound from Izuku’s throat. Katsuki hooked his arms under Izuku’s knees, pushing them back toward his chest, opening him up wider, sinking even deeper.

“This cunt,” Katsuki grunted, sweat dripping from his chin onto Izuku’s heaving chest. “My cunt. Taking all of me. Feel it.”

“I feel it,” Izuku sobbed, pleasure coiling tight again, a spring wound to breaking. “I’m gonna—Kacchan, I’m gonna—”

“Cum,” Katsuki snarled. His thrusts lost their rhythm, becoming frantic, animal. “Squirt on my cock. Do it.”

Izuku shattered. His vision whited out as another torrent rushed out of him, soaking the sheets beneath them, his body clamping down around Katsuki’s driving length. The intense, rhythmic clenching was all it took. Katsuki roared, burying himself deep as his own orgasm ripped through him, pulse after hot pulse filling Izuku up.

He collapsed on top of him, their slick, sweaty skin sliding together. The only sounds were their ragged breaths and the wet drip from the soaked mattress. Katsuki nuzzled into the crook of Izuku’s neck, his lips brushing over his pulse point.

Izuku’s arms came up, weak, to hold him there. His husband. His uncle. His secret, his ruin, his life. He felt the warm trickle of Katsuki’s release inside him, the throb of his own well-used body, and a peace so profound it felt like a new kind of climax.

Katsuki finally shifted, pulling out slowly. He didn’t go far. He just rolled to his side, gathering Izuku against his chest, tangling their legs together in the wreckage of the bed.

“Happy wedding day, nerd,” Katsuki murmured into his hair.

Izuku smiled against his skin, his eyelids heavy. “Yeah,” he sighed, the word full of everything. “It really was.”