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We Have GOTTA Kill These Guys, Kusuo

Summary:

Kusuo wanted a normal weekend.

Really, that's all he wanted! He'd even avoided his biggest nuisances the day before just to make sure none of them would ask anything of him (though he almost had a run-in with Nendou when he left school).

This weekend he was going to do nothing, just the way he wanted to.

But as he watches a certain blue haired annoyance practically tear his living room apart, couch cushions flying and almost hitting him right in the face, Kusuo thinks that for someone like him, peace really was a big ask.

or

When Makoto Teruhashi comes barging into Kusuo's house in search of his sister, he comes into contact with the one and only Kuusuke Saiki.

Kusuo wonders whether God has chosen him as a source of entertainment, because there is no other reason for this to have happened.

Notes:

hi this is unfortunately my first contribution to the fandom

writing makoto was genuine torture i dont know how yall do it HELEPMEEE

in honor of pride month i offer makokuu

italics with quotes represents kusuo's telepathic communication, and italics without quotes are his thoughts (not including emphasizing of course)

(See the end of the work for more notes.)

Work Text:

Kusuo wanted a normal weekend.

Really, that's all he wanted! He'd even avoided his biggest nuisances the day before just to make sure none of them would ask anything of him (though he almost had a run-in with Nendou when he left school).

This weekend he was going to do nothing, just the way he wanted to.

But as he watches a certain blue haired annoyance practically tear his living room apart, couch cushions flying and almost hitting him right in the face, Kusuo thinks that for someone like him, peace really was a big ask.

"Where is she!" the intruder demands. "Where is my Kokomi, I know she's here!"

"I just told you—"

"Shut up!"

Kusuo wants to die. Right now, preferably. Because at least maybe then he won't have to see Makoto Teruhashi in heaven.

He glances over to the abandoned coffee jelly sadly waiting for him on the dining table, and a spike of irritation stabs his heart.

Dessert time interrupted… a crime he cannot forgive.

Well, this isn't really his issue. He can just reset the house once Makoto tires from his fruitless endeavor and leaves, it's no big deal. He can still enjoy his weekend. This is just a minor setback that can be easily corrected.

And with that comforting thought lingering in his brain, Kusuo makes haste to return to his beloved jelly still awaiting him.

I'm sorry my love, he thinks, I haven't forgotten you.

However, his coffee jelly does not come any closer to him, and Kusuo suddenly realizes that his shirt is being gripped within an inch of its life. And that's all the time he gets before he's hauled backwards and pressed against the wall by none other than Makoto.

Makoto fists the front of Kusuo's shirt, and from this angle Kusuo can clearly see the vein in his forehead throb.

Kusuo idly wonders how this guy is Japan's top idol. And not just because he's a pervert (though that's a huge turn off).

"Listen here you shitty four eyes," Makoto growls as he shakes Kusuo a little, "If I find out you laid even a fingernail on my precious Kokomi I'll—!"

"What's going on in here?"

Great. Kusuo almost forgot this guy was here. This was just what he needed.

(God must be in hysterics right now.)

Kusuo's gaze wanders over to land on the one person he could live without ever even looking at again.

His dearest older brother, Kuusuke Saiki.

"Is this your friend, Kusuo?" Kuusuke chirps.

Apparently, the thought of being Kusuo's friend is so disgusting that Makoto visibly shudders. Hell, he looks appalled at the idea. Kusuo, in all honesty, feels the same.

"Wh— Of course not!" Makoto shouts before glaring at Kusuo, who is still caught in his iron grip. "Who the hell is this guy?"

"Ohh I see!" Kuusuke nods. "Then you're Kusuo's boyfriend?"

Makoto blanches as Kusuo's jaw drops.

Kuusuke, the bastard, just keeps talking as if he isn't actively insulting both people on the other end of his words. "I won't judge you for who you love—"

"No."

"—but if you could move this somewhere else, that'd be great!"

If Kusuo was in any shape to use his powers, Kuusuke would've been dead—even decimated—where he stood. Instead, he gives his brother a sharp glare that more than successfully conveys his intent to kill.

"I'd never date this shitty four eyes!" Makoto snaps. "I'm not even into guys!"

Well, that's one thing we can agree on.

Kuusuke smiles, but it's obvious that it's the fakest its ever been. "So you're an intruder? We can't have that!" He pulls out a ray gun from god knows where—one that Kusuo recognizes from the festival back at their grandparents' place—and points it at the both of them. "Do I have to kill him, Kusuo?"

Makoto pales and immediately lets go of the other. He starts frantically waving his hands, "What?! No! I'm here for my sister!"

Kuusuke ignores him as he continues to look expectantly at Kusuo, who fights the urge to nod because he does not want to handle the aftermath of killing Japan's biggest actor.

And so, like the good law-abiding citizen he is, Kusuo shakes his head (and shoots another glare for good measure) because murder is bad. Even if the victim is a famous (perverted) actor with a raging sister complex.

"Aw, alright," Kuusuke sighs, sounding much more disappointed than he should.

"Seriously, who is this?" Makoto demands.

Kusuo wishes he could shut this man up, but unfortunately that means revealing his powers. And he's not ready to give up his attempt at a semi-normal life just for Makoto Teruhashi of all people.

Kuusuke carelessly tosses the gun over his shoulder, and Kusuo doesn't have any time to react before a beam is shot off directly towards his now-melting coffee jelly. He can only watch in horror as the cup is knocked to the ground and the dessert inside splatters on the floor.

This was gore. Savagery. He will never forgive Kuusuke for this.

"Oh haha," Kuusuke clears his throat. "Whoops, sorry Kusuo."

Apology NOT accepted.

Makoto stamps his foot like a toddler throwing a tantrum, reminding the two brothers that there was currently someone else in their home. "Will you all stop ignoring me?!"

Kuusuke finally looks at Makoto, "Could you leave? You're currently bothering my baby brother and I can't allow that." His smile is still light, but it drips with malice all the same.

You're the one bothering me, Kusuo scowls.

Makoto looks like he might explode, which would be really gross and hard to clean even with Kusuo's powers.

"Gladly! Once he tells me where my darling Kokomi is!" Makoto points an accusing finger in Kusuo's direction.

"I already said—"

"I said shut up!"

Kuusuke's expression lights up, which is always a very bad sign. "Ohh, no wonder you look familiar!"

Makoto blinks before his face splits into a grin. "Oh? Did you recognize who I am?"

"You're that one girl's brother!"

"Excuse me?!" Makoto growls, to which Kuusuke just laughs at.

"Sorry, would describing her as 'that vapid girl who's into Kusuo' work better for you?"

Kusuo scrubs a hand down his face before pinching the bridge of his nose. Leave it to his brother to revel in riling people up. Really, how bored was he? He watches as Makoto raises his fist and has the vague thought that maybe he should stop this guy before he punches his brother's lights out. Instead, he turns right around and makes his way to the door because Kuusuke's earlier transgressions have not been forgotten.

"Kusuo? Kusuo, where are you going?" Kuusuke attempts to unsuccessfully pry himself from Makoto's grip on the front of his shirt.

"Buying another coffee jelly."

"Can you get this guy to let go?" He continues twisting around, and Makoto gives him a sharp glare.

The response Kuusuke receives is the lovely sound of the front door slamming shut.

 


 

When Kusuo comes back home after a whole three hours later, he finds the house to be eerily silent.

Clearly, his parents aren't back from their date. But he's more concerned about Makoto and Kuusuke.

He contemplates removing his ring as he has no use for it at home, but if both of them are still here then he absolutely does not want to know what's going on in Makoto's head at any moment in time.

At first, he thinks that maybe he shouldn't even bother looking for them. But then again… if Makoto actually beat his brother to a pulp then maybe, just maybe, Kusuo should heal him.

So with a sigh, Kusuo starts searching around the house for Kuusuke and Makoto.

They aren't in the kitchen nor in the living room. And much to Kusuo's relief, they aren't in his bedroom.

There's a mounting hope inside him that maybe they aren't even in the house at all. This means that Kusuo can have the normal weekend he'd been dreaming about all week, and all his hard work would not go down in vain.

He almost doesn't bother checking their guest bedroom, but he does it anyway just to be completely certain that he's really home alone.

He should have known. He really should have.

When he starts pushing open the door he hears frantic gasps coming from inside, and once he can finally see inside, he really regrets even coming home at all.

Much to his dismay, both Kuusuke and Makoto are home. But that wasn't his concern at the moment, oh no.

Kuusuke and Makoto were home. And not just home, they were in bed together. Probably naked if the blanket covering both of them made it any more obvious.

Kuusuke has little bruises on his neck that trail down to his collarbone, and Makoto's hair is sticking up like someone ran their hands through it.

Somewhere in the back of his mind, Kusuo realizes that this is the first time he'd ever seen Makoto's hair any less than perfect.

Kusuo stares, unblinking, and the air between the three of them is charged with something that none of them can name.

Kuusuke opens his mouth, "Ku—"

The door slams shut on Kuusuke for the second time that day.

Kusuo stands there, still in shock. He wasn't even sure if he was still alive. Maybe he got hit by a car on his way home and this was his purgatory?

This is stupid. Kusuo can't get hit by a car. Not even if he wanted it to happen.

This must be a dream, he thinks. But then that would mean this is a premonition, and he isn't sure whether that's worse.

Kusuo's stomach starts to churn because why, oh why, did his brother sleep with probably the worst guy Kusuo knows (other than Toritsuka, but that's still debatable because at least Toritsuka didn't want to marry his own sister) (not that he had one).

Kusuo makes his way to the couch, and he's suddenly glad that he'd eaten his coffee jelly before he got home. There was absolutely no way he would've been able to eat it in these conditions.

He stares up at the ceiling, trying to bleach the sight that'd been burned into his mind.

And listen, Kusuo doesn't care that his brother is into men. He has bigger things to worry about!

No, it's the fact that Kuusuke slept with Makoto Teruhashi of all people. How did that even happen? Wasn't Makoto dead set on Kokomi? So how in the world did Kuusuke get into Makoto's pants?

In the middle of his intense rationalizing of his current situation, Kusuo hears the guest bedroom door open, and he very nearly teleports out of the house.

Makoto walks out followed by Kuusuke. The former looks like he wants to disappear, while the latter looks incredibly smug. More than he should be.

When Makoto passes by Kusuo on his way out, he stop and gives the other the scariest glare he can muster. Which really isn't much when paired with his still-disheveled hair and flushed cheeks.

"Don't say a word about this, Four-Eyes," he hisses before continuing towards the door.

From here, Kusuo can see scratches that start from the base of Makoto's neck and disappear under the collar of his t-shirt.

If only a meteor would crash down on them right now.

Kuusuke follows Makoto to the door, and right as the latter walks out he makes a "call me" motion with his fingers. Makoto simply flips him off, resulting in Kuusuke cracking up.

Kusuo makes a face when his brother turns back around, one that clearly conveys his disgust at the situation.

"Haha, sorry Kusuo," Kuusuke shrugs. "We didn't think you'd come home so soon."

Kusuo only glares and retreats to his room. He doesn't even want to look at his brother.

He doesn't think his weekend can be normal after that.

Notes:

fair warning dont expect any other saiki k fics from me LMFAO sorry 💔 this is a one-off thing i mostly write for honkai star rail and limbus company

but hey if yall really liked this maybe i'll think about writing more who knows

here’s my tumblr come yell at me about whatever