Chapter Text
Izuku wakes with a start, head pounding in his skull. His skin is itchy; the clothes he’s wearing aren’t the ones he was in before. He tries to open his eyes, but the bright fluorescent lighting above him makes him close them again with a hiss of pain. He lays in the almost-comfortable bed, eyes screwed shut, feeling around the blankets to try and figure out where he is.
It feels like a hospital room, not dissimilar to the one Izuku woke up in when he was little and broke his arm. The sheets are just scratchy enough to be uncomfortable and everything smells sterlised.
Finally, he re-opens his eyes. Izuku squints up at the white ceiling and tries to get a handle on his body. His hands are shaky and his vision is unfocused, but he otherwise feels okay, if not a little tired. He glances around the hospital room- the one they must’ve put him in after that whole… thing.
What was that, anyway? Some homeless guy and a well-dressed clown were brawling it out in a construction site and Izuku was… teleported there, or something, and then he knocked the evil-looking one out with his shoe (he wanted that back, by the way. He spent 10,000 yen on those shoes) and then the homeless guy started talking about ‘heroes’ and ‘quirks’. Then the suggestively dressed woman (why? Just… why?) climbed up the rubble, introduced herself as Miss Midnight and just… picked Homeless Guy up and ordered Izuku to follow her.
What the hell?
And then there was the cat guy. Izuku was so freaked out by his furry head that he passed out in fear. Izuku would have to send him a gift basket or something as an apology for being so afraid of a fucking fursuit.
And what was a furry doing at a crime scene like that? Was it even a crime scene? Izuku looked at his hands in horror. What was going on?!
Thankfully, he doesn’t have anything hooked up to him, and when he pushes his sheets back he’s wearing a set of scrubs. Thank God. Izuku stands up, cracking his unused bones with a satisfying pop! He searches the room quickly to see if any of his belongings are being kept in the drawers. They aren’t, but it was worth the check. Izuku cracks the door to his room open, wincing when it creaks.
Two nurses are having a quiet conversation in the hallway. One has teeth so long that the nurse can’t close their mouth fully, and the other has six eyes. Izuku closes the door.
He seriously needs to get out of here. There has to be a way to leave without getting detected.
Izuku glances at the unlocked window on the other side of the room. He could… climb out of it. He’d probably survive. It’s not like he hasn’t climbed out of windows before.
Was it a bad idea? Yes. Was Izuku a teenager and therefore bound to make bad decisions? Also yes. He was going to do it.
Izuku opens the window and looks down. He was… what? Two or three stories high? Yeah, he could survive that. He might not even break anything.
…Again. The last time he tried this, two of his fingers practically snapped with how hard he landed on them. Maybe this isn’t as great of an idea as he thought.
Izuku physically dispels the thought with a vigorous shake of his head. He starts pulling himself through the opening when someone knocks at his door. Izuku squeaks.
The door swings open, revealing Homeless Guy (Who’s name Izuku could not remember for the life of him) and a man who looked like a classic detective staring at Izuku, dumbfounded.
“What… are you doing?” Homeless Guy asks, eyebrows raised. Izuku glances down at himself, then back up at his guests.
Izuku gives the men an unconvincing grin. “Uh, it’s not what it looks like?”
“Nice try,” Homeless Guy says, grabbing Izuku by the collar of his shirt before he can scramble out of the window. He sets Izuku down on the bed and gives the teen a withering glare. Izuku matches it to the best of his ability.
The detective smiles tiredly at Izuku. “Hello. My name is Detective Tsukauchi Naomasa. I work with the Musatafu Police. This is Eraserhead, whom you’ve already met.”
Izuku narrows his eyes. “Okay? Does this have to do with the clown guy from before? Because if they were, like, good, then I’m sorry for knocking them out.”
“No, they weren’t good. They were a B-ranked villain named Looking Glass, and we’ve been trying to catch them for quite some time now, so we thank you for your help.”
A B-ranked villain? What?
“Anyways,” Tsukauchi says, gesturing for Eraserhead to sit down next to him. “I’m just here to ask you a couple of questions and get you caught up with what happened yesterday. Is that alright?”
“...Sure?”
“Alright, to start, what’s your full name, age, and quirk?”
Izuku makes a face. Quirk. Eraserhead had said the same word in the construction site. What was it that he said? Something about time travel? “Uh, my name is Midoriya Izuku. I’m fifteen.”
Tsukauchi quickly jots it down, then looks up from his notepad. “And your quirk?”
There it was again. “My what?”
Both Tsukauchi and Eraserhead frown. “Your quirk. If you’re worried about privacy, I can promise you that information like that is kept-”
“No, I’m not worried about that. I’m just… confused.” Izuku interrupts, picking at his nails nervously. “I don’t know what that is, is all.”
“You don’t know what a quirk is?”
…Should he? “No.”
Eraserhead and Tsukauchi share a look. Then, Tsukauchi asks. “Do you know the date, Midoriya-kun?”
“Of course I do. It’s June 16th, 2019. Or, I guess it would be the 17th today.”
Eraserhead sucks in a breath. Izuku frowns. “Is something wrong? What happened?”
Tsukuachi opens his mouth, but nothing comes out. He sends Eraserhead a worried look, and Eraserhead stands up abruptly. “Sorry,” He says. “I’ll be right back.”
Tsukauchi looks at Izuku with a tight smile once Eraserhead is out of the room.
“What was that all about?” Izuku asks. It wasn’t like the date was wrong, was it? Had Izuku been asleep for more than a few hours, like he’d thought? Had he been in a coma? Was he asleep for several days? Weeks? Years? What could’ve happened to make something as simple as the date make these important adult figures so worried?
Or, Izuku thought they were important. Eraserhead may look like he sleeps on the streets but Izuku saw how well he fought. And Tsukauchi was a detective, so he had to have some credibility.
Izuku sucks in a breath. Wait, if he had been in a coma, or something like that, was his mom okay? Did she know? She had to, if Izuku had been in a hospital for so long. What if she didn’t, though?
Tsukauchi interrupts his spiral with a cough and a light touch to Izuku’s shaking hand. “Ah, Midoriya-kun, sorry to worry you. This may sound unbelievable, but I think we’ve concluded what happened yesterday,” He looks just as lost as Izuku feels, so the news must be bad. Terrible, even. Izuku braces himself for the worst.
“The villain you took down, Looking Glass, can send a subject forwards or backwards in time. We were under the impression that they could only displace someone by a couple of weeks, a month at most, but it seems we were wrong.”
Tsukauchi pauses to take a breath. Izuku notices the almost manic way he’s gripping his pen and notebook. Izuku can relate. “Midoriya-kun, you said it was 2019, correct?”
Izuku nods. Fear clouds the edge of his vision. He feels dizzy.
“Well, the current date is June 17th, 2319. I think Looking Glass sent you forward in time by three hundred years.”
Izuku blinks, then blinks again. Then, he shouts, “WHAT?”
—
Naomasa tries his best to calm Midoriya down, who’s so shocked by the news of his displacement that he almost passes out again. Naomasa gets the kid under control and then smiles sheepishly at him. “Sorry, Midoriya-kun. I probably could’ve found a better way to reveal that to you.”
Midoriya nods, dazed. “Well, now I know why you were acting so weird.” Truth. Naomasa just laughs. It isn’t a very funny situation.
“Tsukauchi-san,” Midoriya says after a moment. He looks nervous. “If I’m three hundred years in the future, does that mean my mom is…”
Naomasa winces at the mention of Midoriya’s mother. Admittedly, he had been thinking about her. There was no way she, or any close relatives of Midoriya, was still alive, which meant that Midoriya needed to be put under custody until he went home.
“We’re going to figure out what to do with you while you’re here, Midoriya.” He replies, quiet.
“You didn’t answer my question.” Truth.
Naomasa sighs. “I’m fairly certain you already know the answer.”
Midoriya’s hands ball into fists and Naomasa takes in how small he is. Only fifteen, with big green eyes and a rat’s nest of curly black hair, baby fat still clinging to his cheeks. He can only imagine how hard it must be for Midoriya to be so far from home, without his family.
“Midoriya-kun,” He says instead of offering apologies. “What do you like to do for fun?”
—
Shouta sighs, hanging up on Nedzu. The chimaera had been perplexed by Shouta’s explanation of Midoriya’s situation, to say the least.
“Are you sure?” Nedzu asked. “Looking Glass has never displaced someone over a month. One month and three centuries are two very different units of time, Aizawa-kun.”
“I’m sure. Tsukauchi confirmed it; the kid wasn’t lying.”
Shouta heard Nedzu sigh over the phone. “Alright then, we’ll have to fill the child in. When you have the chance, bring him over to have a chat with me.”
Shouta raised an eyebrow, despite the principal not being able to see it. “Right, and you’re getting jurisdiction over this case because…?”
Nedzu laughed lightly. “I’m Principal Nedzu, Aizawa-kun!”
Shouta shrugged. Good enough, he supposed.
All he was worried about now was what exactly Nedzu wanted with the kid. Shouta hated to admit it, but the rat had a sadistic streak a mile long. He could only imagine what the principal wanted with a time traveller like Midoriya.
He pockets his phone, running a hand over his face. Three hundred years meant a lot of missed history. Midoriya probably needs some help learning about what he missed. He pivots towards Midoriya’s hospital room, ignoring the sharp pain in his still-healing foot. He forgoes knocking.
Shouta looks down- because Tsukauchi and Midoriya are both missing from the spots he left them in- to see the two sprawled out on the floor in a heated discussion.
“Every time you explain it to me I get more confused,” Midoriya admits, sitting up with a wince. “I mean, you said quirks were evolved only from human beings, right? So how are animals showing up with the same abilities, especially considering that some of them aren’t made even close to the same way humans are.”
“Superhumans,” Tsukauchi corrects patiently. Judging by the withering glare Midoriya sent his way, he’s probably had to do that several times.
“Fine, superhumans. Are you happy now?”
“Very.”
“Fine, whatever. I just think it doesn’t make sense. Are you sure quirks are evolutionary and not stemming from a disease or something?”
Naomasa sits up as well, sighing. “As far as I know, all research done on the appearance of quirks points to them being an evolutionary mutation. It’s not confirmed, but it’s the most likely theory.”
“Okay, but are you sure?”
Shouta speaks up from his place in the doorway. “Careful, kid. Talking like that will get you dismissed as a conspiracy theorist.”
Midoriya huffs, crossing his arms over his chest. “I was just wondering. Tsukauchi-san doesn’t seem very well-versed in quirk science.”
Tsukauchi gives Shouta a betrayed look. Shouta just shrugs.
“So,” He asks before Midoriya can bury himself in the notebook on the floor again. “What are you two doing, anyway?”
Tsukauchi stands, brushing his knees off. “I’m just catching Midoriya-kun up to speed with some important scientific discoveries and terms he should probably know if he’s going to integrate himself into this society at all.”
Midoriya gives Shouta a thumbs-up, but Tsukauchi’s face gives away more than a detective’s should. He’s worried.
About the kid or something else, Shouta wonders. Midoriya shoves the notebook in Shouta’s face, pulling him back into the present. He looks at a surprisingly accurate drawing of Tsukauchi, with information about his quirk next to it. Before Shouta can read any of it, Midoriya flips the page to show off his drawing of Looking Glass and their quirk description. He flips the book closed before Shouta can read any of it.
“I wrote down pretty much everything,” Midoriya says, tapping the notebook’s cover with a pen. “The name of the quirk, how it activates, its limitations, strengths, tells, all of it. Well, almost all of it. Tsukauchi-san kept some things private, and I’m not allowed to know everything about Looking Glass’s quirk because it’s classified.”
Shouta glances at Tsukauchi, who shrugs. “He said he liked analysis.”
////
Tsukauchi Naomasa
pg. 1
Lie Detector (emitter) allows Tsukauchi Naomasa to discern whether or not someone is lying by taking in their tone of voice, choice of words, body language, and context clues and processing the information much faster than the average person.
His frontal lobe is especially in tune with deductive reasoning, thus allowing him to take in subtle clues that help him with lie detection. His brain processes this information faster than a normal person can, which results in the almost instant reaction of ‘truth’ or ‘lie’.
Tsukauchi has trouble with using his quirk when the target is obscured in some way. Examples of this include phone conversations (tone is obscured, body language is omitted), someone speaking in the dark (obscured body language), or conversations through a wall (muffled tone, omitted body language). He may also get incorrect results if he is using his quirk while tired or under the influence of medication, drugs, alcohol, or other substances that may affect his focus.
Tsukauchi can use Lie Detection despite language barriers, as long as he knows how the language is spoken. To help hone this ability, Tsukauchi has taken several language classes and can speak five languages (Japanese, English, Spanish, French, and Cantonese) almost fluently. He also has taken interrogation classes and often plays deduction games to keep his skills sharp.
In the case of a half-truth, Tsukauchi has a 50/50 chance of correctly deducing whether or not the statement is a lie. He has trouble picking out lies when they’re mixed with truths, and occasionally his deduction will come up inconsequential.
Tsukauchi’s quirk is a combination of his mother’s minor empathy quirk and his father’s intelligence quirk.
---
Looking Glass
pg. 3
Jump (emitter) gives Looking Glass (real name unknown) the ability to send a person forward or backwards in time by a random amount. This lasts anywhere from a week to a month. LG must touch a person biologically related to the person they displace. The exact closeness in DNA that’s required is unknown.
LG can only use their quirk if the person they last used it on is back in their own time, making few opportunities to activate it.
It’s suspected that instead of actual time travel, Jump just teleports a person through time itself, creating a ‘rip’. Whether or not these rips can be closed is unknown. Being able to close the rips may have dire effects on not just the target of LG’s quirk, but anyone that person interacted with during their time displaced.
It’s likely LG’s quirk is a combination of a teleportation quirk and a precognition quirk, although it’s possible the precognition quirk is actually another time-travelling quirk of some sort.