|Romanized Name:||Kenbun-shoku no Haki|
|English Name:||Color of Observation Haki (Viz);
Observation Haki (FUNimation)
|Literal Meaning:||Haki of the Color of Observation|
|Debut:||Chapter 246; Episode 160|
|Fighting Style Focus:||Presence detection, Limited precognition|
Kenbunshoku Haki, also known as Mantra (心綱（マントラ） Mantora?, literally meaning "Mind Rope") on Skypiea, is a form of Haki that allows the user to sense the presence of others, even if they are concealed from view or too far to see naturally.
Known Kenbunshoku Haki UsersEdit
|Adalinda Auer||Atsuko Aio||Blood D. Baron||D'Artagnan||Dhahaka D. Knave|
|Draco D. Damon||Hayato||Kazuki D. Riko||Totsuzen Jarogniew||Zain Lucian|
- †: the character is deceased.
- *: the character's status is unknown. Hovering the symbol may give further details.
- ≠: the character is non-canon.
- ‡: the character is no longer part of this group. Hovering the symbol may give further details.