"Haki is a power that lies dormant in all the world's creatures... "Presence", "fighting spirit" and "intimidation"... It is not different from the things that humans can naturally sense such as these... 'The act of not doubting'. That is strength!"
― Silvers Rayleigh explaining Haki to Monkey D. Luffy at the start of his training. (One Piece)

The power to manipulate energies derived from willpower and/or ambition. Sub-power of Indomitable Will. Not to be confused with Willpower Manipulation.

Also Called

  • Fighting Spirit Manipulation
  • Haki (One Piece)


The users of this power can manipulate energy formed from their ambitious strength and willpower to be enable them to achieve feats such as reading others' movements, to bypassing any defenses an ability may provide via contact or even knocking a person unconscious.




One Piece Universe


Known Users

  • Meredy (Fairy Tail)
  • Users of Dying Will Flame (Katekyo Hitman Reborn!)
  • Satsuki Kiryūin (Kill La Kill)
  • Users of Haki (One Piece)
  • Users of Spiral Energy (Tengen Toppa Gurren Lagann)


Community content is available under CC-BY-SA unless otherwise noted.