In a world where humans and "higher" people have powers per say. A quirk to use in day-to-day life. These quirks are called "Tiers" and can range from a simple electric touch to entire disintegration. Most commonly quirks are used by hand or mind, for things like acid touch or for a small gravitational pull. Some even have "Double Tiers", however they're quite rare. Tiers can be obtained by simply being born, but if one isn't they must visit "The Meishu". Only for low tiers.