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Chapter 1: The After-School Homecoming

The massive oak door swung inward with a thud that echoed through the vaulted foyer. Katsuki kicked it closed behind him, the sound swallowed by the sheer scale of the space. His gym bag hit the polished marble floor with a heavy, damp thump, the scent of sweat, vinyl, and exertion clinging to him like a second skin.

He was halfway to the grand staircase, his mind already on a shower and maybe a nap, when movement at the base of the stairs caught his eye.Izuku waited.On all fours. His long, fluffy white tail swept a slow, steady arc across the cool marble, the only sound a soft swish-swish-swish. His pure white dog ears were perked forward, pale blue eyes wide and fixed on Katsuki. He was perfectly still, a small, beautiful statue in a simple linen tunic and soft pants, the ever-present black leather collar snug around his throat.

A tension Katsuki hadn’t even realized was coiled in his shoulders unraveled. The post-gym haze, the residual adrenaline from his last set, the vague itch of restlessness that followed him everywhere lately—it all just bled out of him, leaving something soft and warm in its place.He didn’t say a word. Just crossed the distance in three long strides and dropped heavily to his knees on the hard floor, not even feeling the impact.

Izuku didn’t move, but a soft, high whimper escaped him.Katsuki’s hands, still wrapped in his workout grips, came up. He was always careful, so fucking careful, with Izuku. He cupped the hybrid’s face, thumbs stroking over the downy-soft fur of his cheekbones, before sliding up to sink into the dense, impossibly fluffy fur of his ears. He ruffled them gently, then scratched right at the base where he knew it felt best.Izuku’s eyes fluttered shut. His entire body melted, a quivering, contented sigh shuddering through him.

“Missed you, puppy,” Katsuki murmured, his voice rough from his workout, but low.Private.Possessive.

That did it.Izuku instantly collapsed onto his side, then rolled onto his back, presenting his belly. His tail thumped faster against the floor. He gazed up at Katsuki, eyes hazy with trust, arms curled up limply by his chest.Katsuki huffed a quiet laugh. “Brat. Demanding little thing.” But his hands were already moving, scratching the soft, pale skin of Izuku’s exposed stomach through the thin fabric of his tunic, then skritching through the thicker fur that trailed in a line down his lower belly. Izuku’s legs kicked slightly in pure joy, a silent, breathless giggle shaking his frame.

“Good boy,” Katsuki said, the praise slipping out easily, naturally. “Such a good boy waiting for me.” He fished in the pocket of his hoodie, pulled out two of the small, bone-shaped biscuits Hizashi kept stocked in every room.Izuku’s nose twitched. His pale blue eyes locked onto the treats, but he didn’t move, beautifully disciplined. Katsuki held one out. Izuku took it delicately from his fingers, his lips just brushing Katsuki’s skin. He crunched it quietly, tail never stopping its happy rhythm, while Katsuki fed him the second one.

“God, you reek.”

Katsuki didn’t look up, his fingers now combing through the long white hair fanned out on the marble. “Fuck off, ‘Toshi. It’s called accomplishment.”

Hitoshi leaned against the carved newel post at the bottom of the staircase, his arms crossed. His hair was a faded lavender this week, the dark roots starting to show.A fresh silver hoop gleamed in his septum. He was all sharp angles and lazy grace in a worn-out band t-shirt and black sweats. “It’s called bacterial proliferation.You’re contaminating the entryway. Izuku, baby, come get cuddles from someone who smells like fabric softener and weed.”

Izuku just blinked up at Hitoshi, then nuzzled his head back against Katsuki’s still-scratching hand, his message clear.“See? Loyal,” Katsuki said, a smug grin spreading across his face.“He’s spoiled,” Hitoshi corrected, pushing off the post and padding over. He didn’t join them on the floor, but crouched down, reaching out to stroke Izuku’s forehead.“And you enable him. We all do.” His touch was gentler than Katsuki’s, more feather-light.Izuku preened under the dual attention.

“Where is everyone?” Katsuki asked, finally leaning back on his heels, his muscles aching pleasantly.

“Papa’s in the sunroom on a client call. Something about a wife who can’t orgasm unless she visualizes historical battle reenactments. He’s having a field day.” Hitoshi’s tone was flat, but his dark eyes sparkled. “Dad’s still at the office.Said he’d be late.Something about a hostile takeover in Zurich. Told us to order in whatever we wanted.”

Katsuki grunted. “So, the usual.”

“The usual,” Hitoshi agreed.He stood, offering a hand to Katsuki. “Now, for the love of god, go shower. You’re making my eyes water.”

Before Katsuki could retort, a bright, booming voice cascaded down the hallway. “Is that my explosive boy home? I heard the door slam from a mile away!”

Hizashi appeared, a vision in a flowing cream silk shirt and tailored trousers, his waist-length blonde hair cascading over one shoulder in a complex braid.He smelled like expensive sandalwood and citrus. He took in the scene: Katsuki kneeling on the floor, Hitoshi standing over him, Izuku still blissed out on his back.

“Aww, the puppy got his greetings!” Hizashi cooed, swooping in. He bent, not caring about his expensive clothes, and planted a loud kiss on Izuku’s forehead, then did the same to the top of Katsuki’s sweaty head. Katsuki scowled but didn’t pull away.“Good boys, all of you. Katsuki, honey, your pheromones are screaming.Go shower.Then come tell me about your day. Any cute girls at the gym?Or boys?” He added with a wink at Hitoshi.

“Fuck’s sake, Papa,” Katsuki groaned, pushing himself to his feet.

“Language, my love,” Hizashi said, not meaning it at all. He scooped Izuku up from the floor as if he weighed nothing, cradling the hybrid against his chest. Izuku immediately tucked his head under Hizashi’s chin, nuzzling into the silk. “Did my precious puppy get his scratches? Did mean old Kacchan take care of you?”

“‘S not mean,” Izuku mumbled, his voice soft and high, his words slightly slurred. “Kacchan good. Gave treats.”

“See?” Katsuki said, grabbing his gym bag. “The puppy knows.”

He tromped up the grand staircase, the portraits of long-dead Aizawas seeming to watch his ascent. His room was in the west wing—a sprawling space that looked less like a bedroom and more like a high-end gymnasium mixed with a riot.Weights were neatly organized in a rack, but clothes were strewn over a leather sofa. Awards from competitions sat on shelves alongside empty liquor bottles and framed photos of him with his friends, his dads, his brothers.The shower was a massive glass enclosure with multiple showerheads. He stood under the near-scalding spray for a long time, letting the water pound the ache from his muscles.The house was quiet, a deep, resonant quiet that money bought. No street noise, no neighbor sounds, just the hum of climate control and distant, muffled voices.

By the time he came back downstairs in fresh sweats, his blonde hair damp and spiky, the atmosphere had shifted. The giant kitchen, all polished dark wood and stainless steel, was warm and full of light. Hitoshi was at the enormous island, scrolling through his phone with one hand and eating edamame from a bowl with the other. Izuku was perched on a counter stool, his tail dangling, watching Hizashi chop vegetables with terrifying speed and precision.

“…and so I told her, ‘Darling, if thinking about the Battle of Gettysburg makes you come, you need to lean into that! Get some uniform replicas, some fake muskets! Role-play is a gateway to profound intimacy!’” Hizashi was saying, dicing a red pepper into perfect squares.

“What did the husband say?” Hitoshi asked, not looking up.“Oh, he was thrilled. Said he’d always been a history buff. A match made in heaven, or in this case, a historical battlefield.” Hizashi laughed, a bright, musical sound.He spotted Katsuki. “There he is!All clean and less likely to scare small animals.Food’s almost ready. Just a quick stir-fry.”

Katsuki slumped onto the stool next to Izuku, bumping his shoulder against the hybrid’s. Izuku leaned into him immediately, a warm, solid line of contact.“Where’s Dad? He said he’d be late, but it’s already eight.”

“His flight from Zurich was delayed,” Hizashi said, tossing the vegetables into a sizzling wok.The smell of garlic and ginger filled the air. “He texted.He’ll be home by nine. He said to start without him, but we won’t.” He said it with finality.They would wait.

They set the table in the informal dining nook, a cozy space off the kitchen with a view of the lit gardens. The food was simple, perfect.As they ate, Hizashi drew stories out of them.

“So, Katsuki.The gym. Any progress on that cute redhead with the barbell complex?”

Katsuki shoveled rice into his mouth.“She’s seeing someone.”

“A minor detail! Is it serious?”

“How the hell should I know?I didn’t interview them. I just saw her making out with some dude by the protein shakes.”

Hizashi waved a chopstick. “A missed opportunity.You could have offered to spot her. Literally and metaphorically.” He turned to Hitoshi.“And you, my enigmatic one? How’s that beautiful boy from the record store? The one with the sleeve tattoo of the dying orchid?”

Hitoshi shrugged, poking at his food.“He’s fine.We hung out. He’s more into post-rock than I am. It probably won’t last.”

“Sex?” Hizashi asked bluntly, sipping his wine.

“Papa,” Hitoshi sighed, but he was fighting a smile.“What?It’s a valid question!Was it good? Connection is important, but so is technique.”

“It was adequate,” Hitoshi deadpanned.

“Adequate!” Hizashi looked personally offended. “We strive for more than adequate in this house!I’ll book you a session with me.A tune-up.”

Katsuki snorted. “A tune-up. Jesus.”

Izuku listened to it all, eating small, neat bites of food, his ears twitching towards whoever was speaking. He understood most of it on a basic level, the rhythms of their conversation, the warmth of the teasing. He didn’t contribute, but his presence was a calming blanket over the table.

At 8:58, they heard the heavy front door open and close.A familiar, weary sigh travelled down the hall.

Shouta appeared in the doorway, and the room’s energy shifted again, settled. He looked tired, his long dark hair slipping from its low ponytail, his tailored suit jacket slung over one arm. He was massive, filling the doorway, his shoulders straining the fabric of his dress shirt. But his tired black eyes, scanning the room and landing on each of them, softened instantly.

“Daddy!” Izuku chirped, squirming in his seat.“Hey, Dad,” Hitoshi said.

“About time,” Katsuki grumbled, but he was already getting up to fetch the covered plate Hizashi had kept warm in the oven.

Hizashi was already on his feet, flowing across the room. “My love,” he said, taking Shouta’s face in his hands and pulling him down for a slow, deep kiss.“Zurich can go fuck itself. You’re home now.”

Shouta’s deep chuckle vibrated through him. He returned the kiss, a hand coming up to tangle in Hizashi’s braid. “It tried to,” he murmured against Hizashi’s lips. “I won.”

He greeted each of his sons with a hand on the shoulder, a rough tousle of hair for Hitoshi, a light, knowing punch to Katsuki’s arm. Then he turned to Izuku, who was vibrating with barely-contained excitement.

“Hello, little one,” Shouta said, his voice dropping into a gravelly tone reserved only for the hybrid. He walked over and Izuku scrambled from his chair, not into a hug, but to drop gracefully to his knees at Shouta’s feet, looking up with boundless adoration.It was their ritual.

Shouta placed a large, warm hand on Izuku’s head, between his ears. “Were you good today?”

Izuku nodded fervently, his tail whacking the leg of the table.“Yes, Daddy. Waited for Kacchan.Got treats. Ate all my dinner.”

Shouta’s thumb stroked over his forehead. “Good boy.” The praise, from him, seemed to physically melt Izuku.He slumped against Shouta’s legs with a happy sigh. Shouta let him stay there for a moment before gently guiding him back up.“Go sit. Let me eat.I’m starving.”

The rest of the evening unfolded in a comfortable, familiar pattern. Shouta ate while Hizashi talked a mile a minute about his clients, pausing only to feed Shouta a particularly tasty piece of beef from his own chopsticks. Katsuki and Hitoshi argued lightly about a movie, a debate that was more about the sound of their own bickering than the film itself. Izuku, now sitting on the floor by Shouta’s chair, leaned his back against Shouta’s calf, content just to be in contact.

After dinner, they migrated to the sprawling living room, a place of deep couches and soft rugs. Hitoshi claimed a corner, earbuds in, sketching in a notebook. Shouta sank into his preferred armchair with a groan, and Izuku instantly climbed into his lap, curling up like a small, white-furred cat. Shouta’s big hand absently stroked his back, his ears, his tail.

Katsuki sprawled on the rug, his head near Hizashi’s legs where his papa sat on the couch, idly playing with Katsuki’s hair.

A comfortable silence fell, broken only by the crackle of the fireplace and Hitoshi’s pencil scratching. Katsuki felt the restless itch calm under his papa’s touch, under the sanctuary of the room. This was the contradiction of his life: the frantic, loud, competitive world outside, and this deep, unwavering calm within these walls.He needed both.He hated both. He loved both.

Later, as they all prepared to head upstairs, Shouta carefully lifted a sleeping Izuku.The hybrid didn’t wake, just instinctively nuzzled into Shouta’s neck.

“I’ll put him to bed,” Shouta rumbled.

Hitoshi drifted off with a muttered “Night.”

Hizashi kissed Katsuki’s forehead. “Sleep well, my explosive boy. Dream of something that excites you.”

Katsuki nodded, making his way back to his room. The mansion was quiet again, but it was a different quiet now—a safe, full quiet. He stood at his window, looking out at the manicured grounds, the city lights twinkling in the distance. The restlessness was still there, a low hum in his blood, but it was tempered.Contained.For now.

Down the hall, in Izuku’s room—a soft, plush cave of blankets and pillows—Shouta laid the hybrid down.Izuku stirred, his eyes blinking open blearily. “Daddy… stay?”

“Just for a minute,” Shouta said, sitting on the edge of the bed. He ran his hand over Izuku’s ears.“You had a good day?”

“Mmmhm. Kacchan came home.Papa laughed.‘Toshi was quiet. You came home.” Izuku listed the day’s blessings simply. “All my people came home.”

Something sharp and profound clenched in Shouta’s chest.He leaned down, kissing Izuku’s forehead. “Always will, little one. Go to sleep.”

By the time he stood up, Izuku was already asleep, a small smile on his lips. Shouta turned out the light, leaving the door ajar.He found Hizashi waiting for him in the hall, leaning against the wall.

The mansion slept. In his room, Katsuki stared at the ceiling, the hum in his veins translating into a slow, purposeful plan for tomorrow’s workout. In his room, Hitoshi added a line to a song he was writing, the words ‘adequate is a tragedy’ scrawled in the margin. And in his plush bed, Izuku dreamed of running through a sun-drenched field, his family’s voices calling him home from somewhere just out of sight, always within reach.The quiet was deep, but it was not empty. It was full of the sounds of a family, of breaths and heartbeats, of the gentle settling of a vast house holding its precious, complicated inhabitants close. And outside, beyond the walls and the gardens, the city pulsed with a different, waiting energy.Tomorrow, it would beckon again. But for now, for tonight, every single one of them was home.