Haki

Haki is a mysterious power that is found in every living being in the world. It is not that different from the typical senses. However, most people do not notice it or fail to awaken it. Broadly speaking, there are two types of Haki available to everyone, given the proper training, but there is a third type that only a certain group of "chosen ones" are said to possess. In simple terms, Haki is an ability to sense and predict spiritual energy (Kenbunshoku), use life force as physical reinforcement (Busoshoku), and, for the rare "chosen ones", overpower enemies' willpower with your own (Haoshoku).

Types Of Haki
Haki is separated into three categories, or "types"

Kenbunshoku Haki

Busoshoku Haki

Haoshoku Haki