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Cat Scratch Fever

Summary:

Whoever said big things come in small packages wasn't kidding. Especially when a certain greenette attends UA High.

Also, Izuku is a cat.

Chapter 1: Prelude

Chapter Text

"I-'m sorry, what?" Inko Midoriya almost wiggled a finger in her ear to be sure she heard right.

"The now former Doctor Hikari was disbarred and fired for using the so-called 'toe bone test' despite it having been disproven for nearly fifteen years." The doctor replied, looking mildly disgusted at the name. "He misidentified over a dozen children as not having a Quirk, simply because he didn't want to bother with making the effort."

"So...is that why you had me sit in those big machines?" Her son, Izuku, asked.

"Exactly. While you do have a second joint in your small toe, Izuku, heros like Snipe and Best Jeanist have one too, yet they have Quirks. And the inverse happens from time to time as well. " The medic handed Inko a set of files. "What your former doctor should have done was inform the rest of us. The standard now is to perform a thorough battery of tests to check for any potential indicators in your physical and/or mental makeup: blood, xrays, EKG, MRI, the full run." He perked up a bit. "Granted, we can't specify what the Quirk itself will do, exactly. But, we can give you an idea of what kind he has. And he most definitely has one.” As they read through the papers, he continued. “From what we figure, there's about a seventy percent chance it's a transformation Quirk of some kind, with an overlapping thirty percent chance of having emitter properties."

Izuku looked at his hand and wiggled his fingers, trying to make them do something. “But I-I don’t feel nothing.”

“Despite what some believe, or have experienced, Quirks don’t always manifest in one day. Some don’t pop up until they figure out how to activate it. Others can take several days, or even up to a month to fully show.


“…so he said just relax and if I felt anything funny, tell Mom and go outside to keep from accidentally breaking any of our stuff.” Izuku finished his story, reaching to scratch at his nose.

“But it’s been a freaking week, ‘Zuku!” Katsuki grumbled, holding his hand up and letting off a few firecracker-like explosions. “How do you know your Quirk’s not just being lazy?”

“I...I don’t think Quirks work like that, Kacchan.” He replied, scrunching his face up for a second. “Ahh..eh, I’ve been trying to see if I can do anything yet, but nothing.”

“How can you be calm about this!?” Katsuki paced around, “You don’t even know what it’s gonna be!”

“I’m nervous, but it’s the good kind. Like wondering what you got for your birthday.” Izuku rubbed his nose again, sniffling some.

“Yeah, but what if you get the Quirk version of socks!? What if you get a really crappy one, like a color-changing tongue, or hairy palms!” He glared at Izuku when he made another odd noise. “And why do you keep doing that!?”

“I don’t know...ahh..ahh…” Izuku groaned, scrunching up again. “I’ve been feeling like I’m gonna sneeze all dehh..ahhnnyaa...nyaaa...NYA-CHOO!” The sneeze was strong enough to knock Izuku onto his back. “Oof…’

“‘Zuku, you ok?” Katsuki looked at him, eyes widening. “Umm...”

“Yeah...I feel great now!” He smiled. “What are you staring at?”

Katsuki scratched his head. “Well, least it ain’t hairy palms...”