Seijin High School

Seijin High School (成人高校) is a high school where students learn and train to become heroes.

Quirks
Unnamed Object Gigantification Quirk: The main strength of this Quirk is that it allows the user to increase the speed, strength, and size of the things the user touches, This can be used on bolts and Nails, Also seems the user can increase the speed to bring forth powerful momentum to increase the power of the user's attacks, while the sudden increase in size can increase physical strength and destructive range of the weapons.This quirk is very versatile As the user can customize the ammo to specific situations like using Tungsten against fire quirk users.

It is unknown if it can affect people and plants.

Trivia

 * Seijin means "adult".