Warning, will contain a spoiler.
And angst warning~

It was a good few months when you started hanging out with Mirio. A good few months that you were safe to call the 'friendly' outings were just friendly outings, not romantic dates.

What's a romantic date? Is that something edible?

Try as you may, you will not be able to come to terms that you're feigning ignorance to ignore these feelings Kai warned you about. The attachment, the feelings, the weakness. It all felt so wrong, yet so right. And why would you even listen your brother, whose death you plot?

But growing up with him, letting him shape your perception made him have an emotional leverage over you. You have no idea how to handle all of... All of this.

The severe sensation of a bruise you received from your brother was still on your cheek, still fresh from yesterday after he found out you often ditched your patrols.

It took you about thirty seconds to form an elaborative, yet believable lie to make him let you go. It's funny how fast you can lie, it was second nature for you to lie... Even to yourself.

The phone in your pocket vibrated, causing you to flinch and escape your thoughts. You opened your phone to receive a message from Togata.

Mirio: Y/NNNN ;-;

Mirio: Why didn't you showed up? What's wrong? Did something happened?

You sighed, putting your phone away. You just don't feel like talking to people, but he deserves an answer. Hastily, you got your phone from your pocket to text him.

Sorry, I had an accident.

And in an instant, he sent you a reply.

Mirio: Wha? What happened? Are you okay?

I tripped and bruised my face

You sent him a picture for proof, so at least it was believable.

It's pretty bad, I know. And I really don't like moving around, it stings like a bitch

Ooops, sorry.

Mirio: That's a bad looking bruise, are you sure you don't want me to meet you? I'll bring foods. ⊂(・▽・⊂)

You almost chuckled at his statement, but your cheek hurts to even if you only breathe.

It sounds heavenly to have him go to your place, but there's a problem... You live in the Shiee Hassaikai base and you don't want him to know your background.

Sorry Marble eyes... But I can't.

Mirio: Okay then... Just be careful, okay? I'm worried about you.

No worries, I'm a tough cookie •^•

Mirio: Okay, Y/N. Just take care, mkay?

Yes mommm

Mirio: Okay, Marble eyes out!

You gently put your phone down, putting the bag of ice on your bruised cheek, before laying down on the comforts of your covers.

The feelings were undeniable, yet here you are. A teenaged Yakuza, one of the so-called expendables, a skilled fighter who shed a few blood here and there, denying that they caught feels from the marble-eyed fool. A fool you actually love... A... A dork like you.

You were envious of the bright future ahead of him. A life of fame and just... While you lead a life of despair, and every move is a gamble of life and death. Admittedly, it's thrilling, it's entertaining... You hate it.

You prefer to have a normal life like those cheesy teen fictions you read and watch. You just want to mingle with your classmates, outclass those teenage girl cliques, reject football players, fall in love with a dork like you, go to prom, graduate, all the good cheesy stuff.

All you felt in your life was mistreatment. If it weren't for your legitimate relationship with Kai, Overhaul, whatever he calls himself, as his sibling, you'd be treated more like those expendables he hired.

Heck, you are treated like his expendables, but you won't be six feet under if you ever fail a task (which is never, that's how useful you are). You won't receive the six feet under burial. Heck, those poor souls that died under Overhaul's touch weren't even properly buried. They were merely washed off, their remains thrown away, disregarded in sewers. Maybe if you weren't a sibling of Overhaul's, maybe you'd receive the same death treatment.

The worst he can do to you was to leave a minor injury. A cut, maybe a black eye, a bruise. It saddens you to normalise this, but you'd rather be bruised by Overhaul than dying like those poor lackeys.

Fortunately, Mirio didn't felt those things. Good for him. Maybe one day he'll become the world's number one hero after All Might. Maybe he'll forget about you and admittedly, as much as it's painful, it was better.

It was best not to associate yourself-a lowly Yakuza that's supposed to be good as extinct- to a hero. Not just a hero though, more like the hero.

All forms of attachment is useless, as Overhaul says. You grew up with him, and needless to say, he was probably not attached to you. But you didn't care.

And once Overhaul found out about the way you ditched your patrols like that because of those little friendly dates that you lied about... He surely knows how to leave a mark to remind you not to do that again.

The bruise on your cheek still stings like a both he is, but that can't be helped. Maybe it'll take you a few weeks to heal that. It was painful to breathe, to talk, even to smile. Maybe there is a time that will come that you'll be able to conceal that without being suspicious. Maybe the good ol' foundation trick will come in handy...

But then you had to think... All forms of attachment is not useless, it makes you stronger... And weaker, too.

And what if they found out about Mirio? The precious marble eyed dork will surely be done for. You saw how your brother fought. Well, more like you saw how they fought for your brother. Whatever it takes to please the Master, they will do anything. You saw how they shed blood because of Overhaul's commands... And you're guilty to admit that you were one of them.

As for Mirio, he's skill full, you give him that. You witnessed how he used his quirk (the terror) before and he was quite impressive... Minus the naked part, but he's good nontheless. But you can't help but to fear for his well being, his safety.

And if they ever find him, Mirio... He'll merely be one of those blood scrubbed off the walls.

You closed your eyes and decided. It was better to say good bye to him than to harm him because you have those feelings for him.

Gathering all necessary things to confront him, you had the courage to get your phone out of your pocket to type your message for him.

Hey Marble eyes
Sent on 12:52 PM

In almost an instant he replied.

Mirio: Yes, tuff cookie?
Received on 12:53 PM

Can we meet? At 1:30?
Sent in 12:54 PM

Mirio: Shoot, sure!
Received on 12:54 PM

Mirio: Where tho?
Received on 12:55 PM

The bakery.
Sent on 12:55 PM

See ya there, boi
Sent on 12:55 PM

You immediately stood on your feet and rummaged through your belongings, recovering the foundation of your shade and a blending sponge. You looked up at the mirror, and began to painfully dab a generous amount of foundation on the purple spot on your cheek, wincing and whimpering by the pain brought upon you.

This Romeo and Juliet- wait no.
This Romeo and Hamlet scenario was killing you and knowing how the two tales ended, you were going to do something before anything happens.

"So what's up- woah, how did the bruise vanished?" Mirio asked, mesmerized by the clear spot on your cheek. It was nice to see his ever enthusiastic self being mesmerized by your abilities. It's such a shame...

"Yeah, a friend of mine is a great healer," you lied with a grin. It pains you to smile like this, but it somehow felt painless to think that this is an actual genuine smile... But partnered with a lie, though... The dull ache of the bruise was at the back of your mind, but you brushed it aside. "So what do you wanna order? My treat."

"Really?! AWESOME!"

After a blissful amount of time conversing about your daily lives, you can't help but to feel wishful as well... Especially when you were desperate to end this immediately.

"And then Tamaki and I accidentally kissed! To think that it was my first kiss was accidentally taken by my best friend is weird!" He chuckled, as you laughed along. "So who was your first kiss, Y/N?"

You almost choked on your own saliva at that question, as you were removed to say something along the lines of, "You wanna be my fist kiss?" But you decided against it... But now that you think about it... His lips seems to be appealing at the moment. And the way his eyes suddenly glances at your lips with the look like yours... You can't help but to inch forward, as he did the same. You were trying to stop yourself, but your body won't seem to listen to you. Heck, a part of you was screaming hell yes, while another wasn't. One thing's for sure, you're game for it.

Intense feelings rage and conflicted in your systems, as your hand found its way on the back of his neck, your thumb on his cheek as he caressed your cheek.

Maybe if Overhaul were here, it will serve as a big middle finger to him. And as a salt in the wound, you'd flip your finger up at him as you kiss this hero- your hero, as an additional touch.

But then you remembered the very reason why you're here...

You broke away from the spell. Your cheeks ached at how much you grinned oh so happily... But your eyes told a different tale.

"Woah... That was even a better kiss." The blue eyed male breathlessly uttered.

"I-I'm sorry-" you spluttered. "I shouldn't have done that-"

"Hey, it's okay!" He reassured. "We can forget about it, if you want- I don't mind." You don't deserve such precious boy...

"O-okay..." You shrunk on your seat. "I have something to tell you..."

I love you

"What is it?"

I love you, tell him I love you

Things like that happen in movies... It's too late, you need to seal your fate.

"I'm moving away and I'm afraid we can't see each other again." The message immediately made his mood drop.

"Where to?" He asked. The way his smile dropped from his face in an instant make your heart quiver.

"US. My brother decided to go to college there and since I'm practically under his care, I need to follow him."
It's scary how fast you can think of a lie. It's scary that you speak lies like it was the truth. "And I'm not sure if I'm going to return here anytime soon."

He nods, understanding you. "We can still call each other! Yea, we'll call each other" You shook your head at him with a solemn look.

"My father... Died... And my brother's boyfriend cheated on him and my... My brother-" you choked a sob at your fabricated story. "My brother was so heart broken in a span of just a week and I don't want to see him like that and he's slowly losing himself day by day-"

Before you can break down at your own lies, Mirio embraced you in his arms.

"Shhh, I understand. It's okay if you won't be able to contact me... Your bother needs you more than I do..." He soothes you, brushing your hair back as you sobbed on his chest.

"And we'll be leaving by tomorrow, I'm sorry-"

"Shhh, hey-" he pulls away to smile at you. A smile you will miss, that's for sure. " It's okay, I understand you. And I think you should be preparing then." He gave you a closed eyes smile.

And with one final goodbye, you were tempted to press a kiss on his lips... But is it worth the try? Eh, whatever.

You pressed a quick kiss on his cheek, leaving him stunned for a minute, his fingers gently trailing on the spot.

"Thanks for everything, you're the best." You grinned at him. "I'll see you around... Marble eyes..."

"Y-you too! Tough cookie..."

And with that, you finally broke ties with the boy. It pained you to do so, but it was for the best.

Til this day, you though about him. The junior UA student would be turning senior this year... While you were up to following Overhaul around, turning a blind eye as he completed the experiment, meeting with a big time league of villains... It's been hectic around that time.

You saw him for a few times, but you manage to hide away from him. It pains you that you're not the reason why he smiles.

You were happy that he is indeed fulfilling his dreams to be a hero and funny how time flies... He was finally patrolling around.

You aren't really sure if he's pro hero now or was he just an intern? Either way, he's doing a great job at it. Surely he'll work more harder, be the hero he wants to be, become number one...

Surely he would become a recognised figure, a successful one, be well known that he used his quirk for the best of the world.

Little did you know... Life is a fickle thing.

Anything is possible and he will lose something someday if he met the right person, if he fought the right person.

A/N:

And the end. I don't particularly like the ending, but I guess it'll do. I had fun writing it, to be honest.

I know it said 'Overhaul X Sibling Reader' not 'Mirio X Overhaul's Sibling Reader' and I barely wrote scenes with Overhaul in it... Maybe I'll come back to this someday. Maybe, just maybe.

But then again, life's a fickle thing.

I like Mirio, he is sunshine personified and I love him. He is precious, I want to protect this ham in the sack.