My Father's Son - Chapter Twenty-One

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"Grampa Toshi!"

Izuku looked up in surprise when Hiroki ran to the door, curious about this new family member. He'd gotten used to the way Hiroki referred to all of Katsuki's friends as Aunts and Uncles, but it still threw him off each time as he tried to figure out who on Earth he was talking about. Grampa, on the other hand, was a new one.

"Ah-ha! There's my little Prince!"

When Katsuki returned he had a grin on his face, tailed by an incredibly tall man with Hiroki clutched in his arms, his blond hair a little dishevelled, his features a little sunken, as if he hadn't eaten in a whi-

"Oh my God."

"Grampa, this is my Papa and this is Yuuto!"

"It's a pleasure to finally meet you both. I hope you've settled in well."

"Y-Yes, Sir, i-it's an honour to m-meet y-you," Izuku stuttered, jumping to his feet just to bow down low. "C-Can I get you anything? Please s-sit and I'll get d-drinks, and-"

"Oi, nerd," Katsuki cut him off, eyes narrowing. "He knows his way around, relax."

Izuku froze, and the tall man burst with a booming laugh, shaking his head.

"Don't worry about him, he had a long day! Midoriya isn't it?"

"Y-Yes, Sir! Midoriya Izuku! My apologies, I should have introduced myself!"

"Not at all, my boy! I'm Yagi Toshinori, I've heard a lot about you."

"He's an even bigger All Might fan than the halfie," Katsuki explained with a sigh. "Ignore the stuttering, he's a big nerd."

"Well, thank you for your support, young Midoriya! I hope you liked your gift, Katsuki spent a long time and dealt with a lot of teasing to get those posters signed for you."

"I did! So much! I've framed them all to hang up on my bedroom wall – with the UV resistant glass, of course! I wouldn't want them to fade!"

"Just ignore him," Katsuki interjected, before All Might could say a word. "He'll calm down eventually."

"You can still call me All Might if it's easier," he smiled knowingly. "I know some people have trouble with using real names."

"He never had an issue with me," Katsuki snorted. "I'm pretty sure I was Kacchan before I was ever Downfall."

"Maybe that should have been your hero name! It's very cute!"

"Shut up, old man."

"What do you think, Little Prince? Think we should start calling him Kacchan?"

"But Daddy is a cute name too!"

"Right you are."

"Sometimes Papa calls him Daddy too."

Izuku choked on his own spit, spluttering as his face burned red, but All Might managed to contain himself to a widening of his eyes, the rest of his face carefully neutral.

"Hiroki, please don't say that to people," Katsuki sighed. "It sounds different to adults, okay?"

"Mm... Like a swear but for kids?"

"Exactly. Adults are allowed to swear, kids are allowed to say Daddy. They don't really work the other way around."

"Okay! Then why does Papa say it?"

"I only say it when I'm talking to you!" Izuku blushed. "Because that's what you call him!"

"Oh. But I know Daddy's name, I know who you mean."

"Thank you, I can cut it out in the future, then."

"Okay!"

All Might finally set Hiroki down when they sat, planting him on the couch cushions beside himself, and Yuuto peeked out cautiously from the kitchen now that they were further away.

"Oh, there you are," Katsuki smiled, scooping him up despite his little squawk. "This is Mr. Yagi, he was All Might when he was still working. He's also kinda like another Dad to me, but don't tell him that."

"My other Grandad!" Hiroki declared, leaning into All Might's side. "Grampa Toshi!"

"Yeah, the kid loves 'im," Katsuki sighed. "I have to keep him around for Hiroki's sake."

Katsuki rubbed Yuuto's back lightly, hoping to comfort him a little, and Yuuto snuggled a little closer to tangle his fingers in Katsuki's shirt.

"It's nice to meet you Mr. Might, my name is Yuuto."

All Might smiled warmer than Katsuki had ever seen it, and Yuuto returned it shyly before he turned back to Katsuki. He leaned in closer to whisper something, and Katsuki nodded, setting him down gently and watching him scurry away toward the stairs.

"Is he shy?" All Might asked, wrapping his arm around Hiroki. "I hope you take good care of him."

"He's super brave mostly! But meeting special people and doing new things makes him nervous sometimes."

When Yuuto returned, tears sprung to Izuku's eyes. The tiny hands clutched at a plastic figure, one of the first ones Yuuto had ever picked out for himself – the beginning of his collection of little heroes. Izuku had just been grateful that he loved the cheaper ones, rather than the ridiculously expensive and detailed ones he personally always wanted.

"This was my first one," Yuuto whispered, holding it up to show All Might nervously. "I got this one, and then I got Downfall a little bit later, because you were my favourites."

"I've never been more honoured," All Might smiled, leaning forward to look a little closer. "You've had it all this time?"

"Since I was super little," Yuuto nodded. "Um, maybe two?"

"You wanted Downfall for your second birthday," Izuku nodded. "All Might was a lot of babbling and pleading when you saw it in a window."

"Do you think you could sign it for me?" Yuuto asked quietly, gnawing at his lower lip. "Pretty please?"

"Of course I can! Do you have a pen somewhere?"

Yuuto produced a permanent marker from his pocket, and All Might smiled at him warmly, nodding as he accepted. He braced the figure against his hand and carefully inked out his autograph on the stand, waiting a moment for it to dry before he handed it back over.

"Have you been meeting lots of heroes through Katsuki?"

Yuuto shook his head, biting at his lip again, then sneaked a glance over at his watching fathers.

"I met Red Riot a little and he's gonna take photos next time but no one else yet. I'm, um, I don't want to meet everyone at once," he blushed. "That... That seems scary."

"I can understand that, it's a lot to think about, isn't it?"

Yuuto nodded, sneaking another glance at Katsuki before he leaned in a little closer.

"But Downfall is my favourite anyway so I don't need to meet everybody."

"He's a good favourite," All Might grinned. "A very good role model. Are you going to be a hero too one day?"

"Yeah!"

"I'm sure Downfall will teach you lots of valuable things."

"He does!"

"I'm glad. Has he always been your favourite?"

Yuuto nodded faintly, glancing at Izuku this time as if he might jump in and help out.

"Papa says so," he said finally, when Izuku didn't intervene. "He says when I was a baby I liked to watch him on TV."

"Oh?"

"He would hold me and when Downfall came on I would smile and try to reach him."

"That's adorable," All Might laughed, unable to hold it back. "That must have been the cutest thing in the world to watch."

"It was," Izuku agreed with a smile. "I can't help but wonder now if he knew, but either way I'm just glad he has such a good role model, since he wants to be a hero."

"From what I've heard, you make a rather fantastic role model for them too."

Izuku blushed, and All Might lost another hearty laugh.

"And modest, it seems. Tsukauchi thinks very highly of your work, and he's only had you for a week or two!"

"I enjoy the job a lot," Izuku mumbled awkwardly. "I'm glad they're happy with my work."

"You're all a bunch of mumbling idiots," Katsuki sighed, ruffling Yuuto's hair as he stepped by. "I'm gonna go make drinks, you all want the usual?"

Everyone nodded, and Katsuki sighed, shaking his head at them.

"Now you're all bobble-headed mumbling idiots. Yuuto, you wanna go put that away safely and then we can have afternoon tea?"

"Yeah," he agreed, bowing once to All Might. "Thank you again! I'll treasure it forever!"

"Any time, my boy!"

Izuku offered a nervous smile to All Might when Yuuto disappeared, getting a bright look in return, perfectly happy and at ease despite the nerves around him. Katsuki fussed over them all quietly, in his typical unhurried manner, pouring drinks and plating snacks to lay out on the table.

"Toshi-sensei comes by any time I finish a big job," Katsuki explained, when he caught the curiosity in Izuku's gaze. "Wants to make sure I'm not having a breakdown or something, I don't know."

"Of course I come check on you!" All Might laughed in his booming way, ruffling Katsuki's hair when he bent over to hand him a mug. "You and Mirio are the only sons I have!"

"Even after I kicked his ass?" Katsuki smirked. "You still call that your son, when he's stuck in second place?"

"If he was going to lose to someone, there is no one I'd rather it be than you."

"We both know you'd be happier if he beat me."

"Oh Katsuki, you know that's not true. Do you need a hug again?"

"Shut up, old man," Katsuki blushed. "I never needed a shitty hug, you just forced them on me."

"It's okay Grampa," Hiroki whispered, hiding it away behind his hand. "I give him lots of cuddles and so does Yuuto, he gets as many hugs as he wants! And lots that he doesn't want, too."

"Oi, don't you start," Katsuki growled. "I always want your hugs, don't say that nonsense."

"Okay! You can have lots of hugs!"

To make his point, he held his arms up, and Katsuki snatched him away from All Might to squeeze him tightly. Izuku couldn't help but smile at them, at their stubborn little hug, and he caught a glimpse of an equally fond look on All Might's face.

When Yuuto returned he froze in the doorway, staring at Hiroki as he clung to Katsuki like a koala, all his limbs wrapped around the taut torso.

"Is Hirokun okay?" he asked nervously, sidling up to Izuku's side. "What happened?"

"He's fine, they're just being stubborn," Izuku laughed. "You know what they're like."

Pouting, Yuuto reached for them, making grabbing motions with his fingers, and Katsuki couldn't resist a grin. He shifted Hiroki into one arm and hitched Yuuto up with the other, letting him join the snuggles, and Izuku was a little surprised by how fondly All Might watched them.

"The one peril of my career was that I never found the time to settle down and find someone to love, to start a family," All Might mused. "I didn't think I'd make it this far, to be honest, so I was happy I got the chance to adopt a couple of sons, even if it was against their will."

"I never said that," Katsuki grumbled, setting the boys down on the couch gently. "I still have my father so maybe it isn't the best phrasing, but whatever."

"I would never try to replace our Masaru! He's the best of men!"

"I know. He does too. It's fine."

"I just mean that when you told me you didn't like girls I figured there wouldn't be grandkids on the table, is all. And then you surprised me with the little Prince Explosion Murder over here, and now a cute little mini-Katsuki? The family just keeps growing."

Katsuki blushed faintly when Izuku's gaze snapped to him, but he shrugged it off all the same, busying himself with repositioning plates on the table.

"I mostly dated guys too," Izuku admitted, refusing to look Katsuki's direction. "My wife was the only woman I ever loved – or even liked, really – and before that it was just... Well, you know. I didn't really expect to have kids either, unless I adopted them. So our boys have been the happiest surprises in the world!"

It took a solid minute for Katsuki and Izuku to look at each other again, only meeting gazes when the boys were distracted, and Izuku was surprised to see how much softness was in his face, how gentle he looked as he considered Izuku's face in turn.

"Well then, I'm glad you boys found each other!" All Might beamed. "You've got quite the family here, I'm a little jealous!"

"Don't be an idiot," Katsuki snorted. "You're a part of it too, whether you like it or not."

"Thank you, Katsuki, that means a lot."

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