Haki is a mysterious power that is found in every living being in the world. It is not that different from the normal senses. However, most people do not notice it or fail to awaken it. Broadly, there are two types of Haki common to everyone, given the proper training; however, 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 spiritual energy (Kenbunshoku), use life force (Busoshoku) and overpower enemies (Haoshoku).
Haki also can evolve as well Busoshoku Haki can evolve into Tetsubusoshoku Haki Kenbunshoku Haki Evolve evolve into Mangekyoshoku Haki and Haoshoku Haki can evolve into Saiko Haoshoku Haki
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