Haki is a power that is present within every living creature in the world of One Piece. Not everyone is able to use it, and for the people that unlock through intense trauma or training, they are not guaranteed to be able to use all three types of Haki. Usually a person will specialize in one type of Haki while possibly being able to use the other two.

Every person has a limited amount of Haki, and overusing it can cause a person to stop being able to use their Haki for a short period of time.

Haki can grant many abilities as seen below:

  • Accelerated Development: Haki can sometimes become stronger in combat, especially against powerful foes.
    • Over the course of his battle with Charlotte Katakuri, Monkey D. Luffy was able to increase the proficiency of his Observation Haki to the point where he could see into the future.

Observation Haki

Observation Haki, also known as Kenbunshoku Haki, provides a 6th sense to the user, allowing them to sense the presence of others even if they are concealed from view or too far away to see normally. It can also provide certain other abilities beyond just enhancing the senses. The user needs to be properly calm in order for Observation Haki to work.

Armament Haki

Armament Haki, also known as ‎Busoshoku Haki, allows the user to actively use their Aura as a shield and a weapon.

Conqueror's Haki

Conqueror's Haki, also known as Haoshoku Haki, is the rarest of the three types of Haki, being used by one in a million people at best.

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