Silvery Night

Izuku is grading papers in his office, a space the UA designated for him after school hours so he can finish before going back home. His students are probably in their respective dorms right now.

After a while, the window opens, and he sighs and rolls his eyes, but he also has a smile on his face before he looks at a very tired Katsuki, still wearing his hero suit, getting closer to him.

"You should go to the apartment and rest," Izuku tells him, even though he knows it's not going to work. "I'm almost done."

Katsuki narrows his eyes before he places takeout on the teacher's desk. Izuku smiles again, and when the pro hero leans closer, he gives him a quick kiss on the lips because he knows his boyfriend will pout if he doesn't get his kiss.

"There's no point if you're not there."

Izuku knows he should insist, but at the same time, he finds it endearing that Katsuki is still very much in love with him after two years of dating. It's always like the first time with him; his love is so intense it makes Izuku blush every time he thinks about it, but at the same time, it makes him wonder if he deserves it.

They eat the takeout, and Izuku keeps grading the few papers that are left. The pro hero then kneels next to him and rests his head on Izuku's lap.

"That has to be really uncomfortable, Kacchan," the teacher comments, a bit worried. "You should sit back on your chair or go home. I'm almost done."

"Great. Then we'll be here for a little while," Katsuki mumbles stubbornly before wrapping one of his arms around Izuku's waist.

The teacher starts running his fingers through that spiky blond hair of his, until, a couple of minutes later, Katsuki falls asleep with his head on Izuku's lap and kneeling on the ground next to him.

Just a few minutes after Izuku is done, Aizawa walks in and rolls his eyes as soon as he sees the sleeping pro hero.

"This is not the place for that."

"He's just asleep," Izuku mumbles, blushing to the tip of his ears nonetheless. "Besides, I'm done, so we'll be leaving soon."

Aizawa nods, and despite looking a bit irritated, he closes the door behind himself carefully, without making too much noise.

Izuku leans and kisses his boyfriend on the forehead before gently waking him up.

"Can we go home now?"

"Yes, let's go, Kacchan."

***

When Katsuki tells him he's going to be patrolling at night and Izuku shouldn't wait for him, the teacher packs his students' works, heads home early and keeps working from the couch in the living room after having something to eat.

He works for hours until he's exhausted, and knows his boyfriend insisted on him not to wait and instead go to sleep, but the truth is that Izuku doesn't feel sleepy at all, so he starts checking his work email instead.

Izuku has no idea when he fell asleep on the couch, but he blinks his eyes open when a pair of strong arms lift him easily from the couch.

"Kacchan?" He mumbles before feeling lips pressed against his forehead. The pro hero no longer has his suit on; instead, he's wearing comfortable clothes and smells like shampoo.

"I told you not to wait for me," Katsuki scolds him, but he's still staring at Izuku with a fond expression, like he's the most precious thing in the world.

"I wasn't, I was grading papers," Izuku says, knowing it's a lie. He was just using that as an excuse.

Katsuki chuckles, obviously not believing a word, but doesn't argue with him. Instead, he leans closer to kiss him all over the face until Izuku starts giggling.

"I love you, Izuku."

"I love you too, Kacchan."

The pro hero helps him get comfortable clothes too before the two of them climb up to the bed and curl up against one another. They're both tired, but not too much, so they make out for a while. The kisses are good as the first day, and the passion is there, but now it's more of a need to be next to each than just wanting to have sex.

However, they both have a day off tomorrow, so they keep going until they're both truly exhausted, sore, but happy and satisfied as well.

Katsuki cleans up, gets new clothes for both of them, and curls up next to Izuku, helping him get dressed again while kissing him every time he can.

"We should sleep," Izuku giggles, knowing if they keep kissing, they won't be able to sleep at all. "Maybe we should go on a date tomorrow."

"Sounds like a good idea, baby," Katsuki almost purrs, pressing his lips against a mark he left on Izuku earlier.

When Izuku is about to close his eyes, he feels Katsuki pulling him closer to his body.

"Let's get married, Izuku. Two years is more than enough to see if this is working or not," the pro hero suddenly says, gently cradling the teacher's face. "I bought the ring since we started dating and I'm getting a bit impatient."

"Really?" Izuku already has happy tears in his eyes.

"Yes. I've never been more sure about anything in my life," Katsuki assures him, red eyes staring at him with so much love and devotion, Izuku feels breathless for a moment.

"Let's get married then," he agrees, giving Katsuki a soft kiss on the lips.

When he wakes up, Izuku is not sure if last night's conversation was real or not, and feels a bit disappointed when he doesn't find Katsuki on the bed next to him.

However, when he walks into the kitchen after taking a shower and putting new clothes on, Izuku realizes Katsuki is making a delicious breakfast.

"What's the occasion?" He jokes.

"Our engagement," Katsuki says, before turning around and getting in one knee in front of him before showing him a ring with a green and an orange gemstone over it. "Would you marry me, Izuku?"

"Of course, Kacchan. I've always been yours."

Katsuki puts the ring on him and shows him, with a very passionate kiss, that he's completely Izuku's as well.

***

She couldn't have been more wrong; not only the former sound hashira is constantly in the butterfly estate (only when Tanjirou's around), his wives come with him as well.

She has no idea why the sunshine hasn't realized that Uzui is treating him just like one of his wives and said women are more than okay with it.

They come after hearing he has returned from a mission, they take care of him, they make him food, and Uzui usually sits him on his lap while Hinatsuru runs her fingers through his red hair.

Sometimes, Suma brings him very rare and beautiful bouquets of flowers, and Makio makes him the food he likes the most.

Aoi has even seen the former hashira kissing Tanjirou all over the face until he makes him giggle. She rolls her eyes, thinking that he has finally realized what's going on and goes somewhere else.

But then, Aoi accidentally hears him talking to a kakushi about the situation and has the sudden urge to facepalm herself.

"No!" Tanjirou blushes to the tip of his ears as he shakes his head a couple of times. "Tengen-san and his wives are just my friends!"

"I see..." the kakushi obviously doesn't believe him, but she doesn't ask more questions.

Aoi feels a bit bad for the former hashira, at least until she remembers he tried to take her on that dangerous mission against her will. Perhaps he deserves to suffer a little bit.

Although it doesn't look like Uzui is suffering at all; it's like he and his wives have all the patience in the world and are just waiting for Tanjirou to finally realize what's going on.

I do! Here's my ao3.

Caring alpha Olruggio using his magic to provide warmth and comfort for his omega and pups while adamantly denying it.

Izuku, despite being just a teacher at the moment, knows how much public opinion can affect hero rankings. It shouldn't be that way, but since it seems like it's not going to change anytime soon, he wants to avoid damage to Katsuki's public image.

Katsuki doesn't give a fuck about that. He's over the moon because, after confessing to Izuku, the teacher not only agreed to start a relationship with him, he said he felt the same.

His middle school self would have definitely cared about making sure to keep his ranking, but now that he's a professional, actually, the number one at the moment, the thing he cares about the most is Izuku. Katsuki wants to make him happy, he wants to spoil him and buy anything he could possibly want, and he wants the teacher to stay by his side for the rest of their lives.

He's more than ready to tell everyone about the two of them, but agrees to the secrecy because the cute nerd himself asks him to.

However, Katsuki is actually terrible at pretending. He gets caught by paparazzi and overly enthusiastic fans smiling now, being more patient around annoying reporters and being in such a good mood lately that he doesn't snap at civilians for exposing themselves to danger or ignoring his instructions.

Still, he's very professional, and an excellent pro hero, but he's suddenly more approachable and kind to people.

The fans begin to speculate, the reporters are intrigued and willing to do anything to get an answer from him because now they're sure there's something weird going on, and everyone wants to be there first to post about it.

His PR team begs him to behave like he used to, but the pro hero can't do that anymore. He's a besotted idiot who gets ridiculously happy just thinking about going back home to see Izuku smile at him and welcome him to their apartment.

Katsuki gets to kiss his nerd on the lips and every inch of his body as many times as he wants and they expect him to act like an angry beast? That's practically impossible.

The reporters start asking him about it, and even though he tells them it's because he's so fucking happy at the moment, he tries not to say why.

However, he ends up blurting everything out after he finds a Twitter account called warherodekusimp that posts a lot of pictures of sweet teacher Izuku on the streets, or outside the UA and mentions how much they'd like to have him all to themselves.

Their followers do the same, constantly trying to get Izuku's attention, saying he should give one of them a chance.

Katsuki doesn't like that at all, so he explodes. He uses his official account to tell the world Izuku is his, and only his, that everyone is wasting their time daydreaming about the nerd and that, in fact, pro hero Katsuki is going to marry him very soon.

Only that the pro hero hasn't proposed to the youngest UA teacher yet.

That's how Izuku finds out they're engaged, a day before Katsuki gives him a very beautiful and expensive engagement ring.

Despite Katsuki breaking the promise of keeping the secret for at least three months, Izuku melts at the proposal and forgives him almost immediately.