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Kirishima knocks three times on Bakugou’s door.
“What the hell do you want?”
He smiles a little as he lets himself in. He's known him long enough now that he can tell which grouchy responses of his mean “come in” and which mean “fuck off.” He lets the door shut behind him as he walks over to prop himself against the back of Bakugou’s chair.
“Are you seriously studying on a Saturday night?”
“Yeah, what the fuck does it matter to you?” He barely looks up from his notes as he scribbles furiously.
“Well, I'm a little bored. And I was really under the impression that you had a life.”
“I still don't see what the connection is, shit-for-brains.”
“I wanted to hang out with you, Prince Charming. Geez.” He moves to sit on the desk instead of standing behind him.
Bakugou lets out a long sigh and throws his pen down. In all honesty, hanging out with Kirishima is infinitely more appealing than studying calculus at the moment. But there is no way he is going to give the asshole the satisfaction of telling him that. “Is there any chance you’re going to leave me the fuck alone if I say no?”
“Nope.”
“Of fucking course. How the fuck do you want to waste my time then?”
Kirishima absolutely beams at him. And damn it, he has no fucking right smiling like that and making his chest flutter like a dumbass lovesick puppy. He grumbles and looks away.
“Come up to the roof with me.”
“What?”
“The sun is setting. Let’s watch it together.”
“Do you actually have any fucking idea how unmanly you are being right now, you goddamn hypocrite?”
Kirishima rolls his eyes a little. Is he blushing? What the fuck. “Then I guess you'll just have to be manly enough for the both of us.” He reaches over and grabs his hand, starting to pull him along, and fuck no his heart does not immediately start to pound. Before Bakugou can even think of anything beyond where their hands meet, he's being dragged out to the roof.
Kirishima doesn't let go until they're both standing beside each other, leaning against the railing. Bakugou can't help but stare for a moment. Kirishima’s hair is down, rustling just the slightest bit, glowing faintly orange at the edges where the light of the sunset hits. He looks gorgeous up here.
Bakugou feels a twang in his chest and he forces himself to look away, because he's not stupid or naive; he knows exactly what this feeling is. He knows exactly why Kirishima brought him up here, because they're both hopelessly romantic and hopelessly afraid to do anything about the obvious romantic tension that has been plaguing their friendship for weeks now.
He gazes at the sky in silence. It's beautiful, and he wants to kick himself for finding it so endearing that Kirishima thought of this place. After a while, he sighs heavily and turns to the other, but Kirishima is already gazing back before he has a chance to say anything.
“Please, Katsuki.” Katsuki. “Just. Let’s enjoy this. Together.” He grabs Bakugou's hand again, scooting closer to lean against his side, head resting against his shoulder.
Once again, Bakugou swells with affection. He can't think of anything to say, so he just stays silent, gazing at the pastel horizon. Although, on the inside, he's thinking about how all of this is actually torture, even if it's a good kind.
Good torture. He supposes that's all that love really is.
He sighs.
The silence is surprisingly nice. Bakugou’s mind wanders to memories he has with the redheaded spawn of Satan beside him, and he doesn't mind taking the time to slow down and meditate a little. Of course, once again, Kirishima knows exactly what they need.
It's when the sun has just barely gone below the horizon that Kirishima breaks the silence.
“Katsuki.”
He's begrudgingly embarrassed. “E-eijirou.”
He laughs a little at the other’s stuffiness. “You can still call me Kirishima, if you like that better.”
“Yeah. Kirishima. It's a shitty name. Perfect for you.”
Kirishima chuckles a little to himself. He squeezes Katsuki's hand as he stands up straighter, turning to face him more. Katsuki can tell he’s nervous, mostly because they both are, and they're both fidgety and avoiding eye contact.
Kirishima clears his throat and stares Katsuki dead in the eye. His heart is pounding, his mouth is fluttering open, and he's willing himself so hard to just say what he’s been wanting to forever, but the words won't come. Instead, in a fit of desperation, he cups Katsuki's face, leaning in as close as he dares.
Katsuki doesn't hesitate a moment before he closes the gap.
They both melt into each other easily, releasing sighs of relief. Bakugou’s arms wrap around Kirishima's waist, pulling him close; Kirishima winds his hands through his hair, deepening their kiss with all of the desperation that's been building for ages. Kirishima’s heart is slamming in his chest as he pours in all of his emotion, trying to convey all the words he can't find into this one kiss.
It works.
After a minute, they break apart, resting their foreheads against each other as they catch their breaths. Bakugou shuts his eyes. “I love you too.”
“What?”
“I love you too. Dumbass.”
Kirishima begins to tear up as he laughs, letting out gleeful little huffs as he presses his face into Bakugou’s shoulder.
“Holy shit. I thought you were unmanly when you dragged me up here, but this is a whole new fucking level of pathetic.” Bakugou himself is blushing furiously, but he's trying to hide it as much as he can.
“I can't believe-” he bursts out laughing. “-you're being such an asshole, not even a minute after you confessed your love to me!” He hits Katsuki's chest weakly in lighthearted retribution, and they both collapse into a messy heap of laughter.
Katsuki wipes away the other’s tears and kisses him some more after their laughter dies. They end up wrapped together as they lean against the edge of the roof, gazing wordlessly up at the stars.