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Shouto is minding his own damn business, merely walking through the streets with a milk tea in hand, when literally out of nowhere a boy his age falls out of the sky and lands smack dab on top of him. The people in the shops gawk. His milk tea has soiled his UA uniform, and the boy won't get off.
All Shouto can see from his point of view is a head of dark brown hair. That head is resting on his chest like it belongs there, and he feels offended. The boy is groaning in pain, but Shouto thinks he should be the one groaning in pain with this hundred-something pound person taking a nap on top of him. His neck does hurt.
The boy groans again—can he stop that? It's making Shouto uncomfortable—and pushes himself onto one elbow excruciatingly. He has one eye shut in discomfort, but Shouto can see that he is green-eyed and definitely foreign. A foreign man has fallen out of the sky. Shouto really doesn't know what to do with this information nor this situation.
"Um, hello," he begins, lifting his head up from the cement. God, the position they're in is so compromising. Passersby stare too long for Shouto's comfort, but he doesn’t blame them. He wants to ask him to please, get off, but he doesn't even know if this guy speaks Japanese.
Apparently he does, because as he struggles to find his feet, he groans back a roughened, "I'm so sorry. I don't know where I am."
Shouto stands up, too, stretching and twisting his aching back and dusting off his clothes. "You're in Japan, but more importantly, can I ask what you were doing in the sky?"
"I was in the sky?"
"I mean," he reasons, confused. He stares boldly at the boy, eyebrows furrowed, "that's where you came from, so I'm assuming so."
The boy paces around nervously, pulling on the drawstrings of his shirt. How he's able to move after that fall, Shouto isn't sure. "No, no, I was just... in a village southeast of Wall Rose. Or something. I was killing some titans, and I rammed into heichou while using my ODM gear on accident, and..."
"And now you're here."
"Wait," he pauses, staring at Shouto too intensely for his liking, directly in his mismatched eyes. "Can you speak again?"
"Um, sure?" Shouto obliges, still confused. "I'm, uh, Todoroki Shouto. You're in Japan. I don't know what Wall Rose is or a titan."
He keeps staring. "Are we related?"
Considering his appearance, Shouto deduces a zero percent chance of them being related. "You look pretty..."
The boy makes a weird face. "Thank you?"
"No, god, I wasn't finished. You look pretty foreign is what I was saying, so... Why are you asking that?"
He starts pacing again, still anxious. "You sound almost exactly like me, so I just assumed..."
Shouto isn't dumb, but he is seriously considering if that fact applies to this boy because they very obviously aren't related. That's probably why he fell from the sky, too, because he's stupid and God didn't want him anymore.
"Oh my god," he yelps, startled all of the sudden. "Did I die?"
"I don't think you've died, no," Shouto disagrees. "You're here and alive."
"Yeah, but—but I don't even know what this is—like, why is your hair two colors! This doesn't make any sense... and why’s that guy over there half-bird—oh my god, I've died. I'm going mental."
"Not gonna lie, I'm a little offended."
"I—sorry, I'm just so confused... How is your hair possible, and what is that flat rectangle you're holding in your hand and why is it making so much noise what is that."
Shouto looks down at his ringing phone. It's Katsuki. He ignores the frantic stranger and picks up. The boy continues to pace around and note his surroundings in terror.
"Hello?"
"You aren't gonna fucking believe this, Shouto, but this guy just landed in my bed. Like from the ceiling. I looked up and there's no hole in my ceiling but he's a fucking Frenchman or some shit, also I thought it was you so I turned around fucking excited to find this old man."
"Hey, brat. Calm your hair, I'm right here."
"Who are you calling brat, shit-for-brains?!"
“Oh? Not bad.”
The boy across from him rushes up to him suddenly, speaking into his flat rectangle with fervor. He's probably heard Katsuki.
"Levi heichou! Oh, I'm so glad to hear you. I fell out of the sky—and this guy with red and white hair, I landed on him—wait—how can I hear you? Where are you?"
“Don’t be ridiculous, brat. Two-toned hair can’t happen like that.”
Again, Shouto is a little offended. He’s all natural.
"This is a phone, dumbass," Katsuki answers him through the receiver. "We're at the UA dorms, if you must know. Damn, what, are you like dating?"
"No! I just—I don't know what's going on and I feel like I've died? How can I check that sort of thing?"
From the other line, Shouto hears someone wrestle Bakugou for the phone. The sounds are aggressive and demanding; he's surprised someone's now been able to be that rough with Bakugou without having their head torn off. Must be a tough guy.
“Take a shit or something, that’s one way to check if your body works,” Katsuki deadpans irritatedly, voice sounding further than it had before.
He hears Levi go “heh,” then a silence that Shouto is sure is awkward as hell ensues.
Levi clears his throat, then clearer and louder than before, the other voice on the line says, "Try transforming right now. Honestly, Eren, we might have died because I had my blades drawn when we crashed."
Eren, the boy, whimpers audibly before shaking his head in an attempt to clear his head. "Okay, let me just... find a clearer space."
Without warning, the boy sprints off to the park across the street. Shouto feels obliged to follow him, so he does, but right as Eren reaches the grassy clearing, he quite literally chomps down onto his thumb—why?—and then Shouto is blown back by the force of an explosion stronger than any Katsuki has ever created. So he has an explosion quirk?
Shouto is getting real tired of falling on his ass and damaging his instrument (his body, mind you) today. He already has Katsuki exploding left and right, he doesn't need another. He rubs his hip soothingly, face contorted in aching pain, when a shadow looms over him. He peers up.
Oh, no, he definitely does not have an explosion quirk. He lifts the phone to his face slowly, hoping they're both still on the line, as he says, "I think we found another Mt. Lady."
The green-eyed giant has serrated teeth and no lips and, honestly, he's just fucking huge. Five stories tall kind of huge.
"But more terrifying. And naked."
He hears a snort on the other line that doesn't come from Katsuki, but Katsuki does speak back. "He has a gigantification quirk?"
He can't stop looking at him dead in his enormous, emerald eyes. "Looks like it, yeah."
"Is he using it on you? Are you okay?"
"Tch. That brat’s not gonna hurt you," Levi announces. "He's like a brainless fly. Are you spineless or something?"
"Shouto, I'm gonna need you to come here with that guy ASAP or else I'm gonna detonate this shitty Frenchman and the dorm along with him." He pauses. "Wait, he's naked? He's got his gigantic junk just swinging around in public?"
"Um," Shouto mumbles, biting his lip, "no, no junk. Naked with no junk."
Katsuki laughs aloud hysterically then, pulling the phone away from his face. "No-penis boy?!"
"His human body has a penis, if you're wondering."
"I thought you said you weren't dating, old man."
"War does things to people."
"You were in a goddamn war before you came here?" Katsuki belts, bewildered. He sounds genuinely ill at ease. "Shit, sorry."
"So is he going to stay this large and naked for a while?" Shouto interrupts.
"No," comes Levi's reply, "he should be out right about..."
What does he mean by out? He couldn't just reduce in size or transform back or something? What a troublesome quirk.
"Now."
The giant kneels then, coaxing its huge body into a prone position with huge forearms supporting it. When it's finally laid its entire body down and stills, from the nape of it emerges Eren, face marked with stripes—disgustingly, actually—attached to the pink muscles and tendons from inside the body. He tears his human body away from it with an unsettling snap, ripping the muscles off, and Shouto's eye twitches. This was a truly disturbing quirk.
"Can you tell Levi heichou it works? So we're like... definitely alive," he yells, breathless.
"So you're definitely alive," he relays into the phone. "Not that Katsuki and I couldn't have told you that already."
"Your parents named you Catskey?" He hears Levi click his tongue. "Shame."
"Shut the fuck—Shouto I need you here now."
He sighs, glancing up at Eren plucking himself from his gigantic self. He makes his way to Shouto when he’s done, expression troubled.
Shouto takes this breathless moment of his to invite Eren back to the dorms, and he obliges (because what else can he do). They make leave, but before they do, Shouto realizes something.
"Are you gonna leave your giant body here? Do you need to go back into it later?"
Eren laughs, rubbing the back of his neck. "No, it'll disappear."
Shouto squints at him, skeptical, and purses his lips. "What a strange quirk..."