Notorious Neko

Little Izuku, a Neko with the size of 5'2", a boy with just bone. Thin and small.
Katsuki, an aggressive teenager with the size of 5'8", a boy with muscle. Tall and masculine

Izuku is a abused and shamed by his owner, in attempt to run away he runs into Katsuki, what will Katsuki do when he sees a large man running after a small Neko?

But not only running, cursing and holding a weapon?
What will Izuku do when he runs into Katsuki?

Katsuki is a Yuuei student, his goal to become a pro hero, even as All Mights Successor. How will he improve his quirk?

Not only are Nekos rare.
Only 0.5% of the population are nekos, jus to see a Neko is extremely rare, they're usually encaged and used at test subjects, or even kept in zoos. So the Neko population has dropped expediently and is very close to extinction.

Nekos are humans with cat characteristics. Ears, tail, heats, senses, agility, flexibility and ect.