Devil Fruit

Devil Fruits are mysterious fruits found in the entire world. When consumed, they grant their eater a special ability, making them known as Espers (能力者, Nōryoku-sha lit. Ability or Devil Fruit User). Devil Fruits possess an immense spectrum of variation, gifting people from mundane to very complex powers. They have immense market prices.

A person can eat only one devil fruit. Furthermore, a devil fruit of specific name can exist more than once, but not at the same time.