one piece - What skills introduced prior to the formal introduction of Haki are Busoshoku Haki based? - Anime & Manga Stack Exchange

There are 6 techniques that are the keys to Rokushiki. Despite a claim in another answer from a well informed user that none of the CP9 members are haki users, several of these techniques seem to be

Haki, One Piece Fan Wiki

Sora Daisuke/Abilities and Powers, OnePiece Fanon Wiki

Phim D. Sera, One Piece Role-Play Wiki

Guimmard Claude, One Piece Role-Play Wiki

one piece - Was the first time Zoro experienced haki in Alabasta? - Anime & Manga Stack Exchange

Why is the One Piece Universe so massive compared to other anime universes like Naruto? - Quora

Can you sort the types of haki based on when and what chapter it was introduced chronologicallly? - Quora

one piece - What skills introduced prior to the formal introduction of Haki are Busoshoku Haki based? - Anime & Manga Stack Exchange

Busoshoku: Bogyo, One Piece Role-Play Wiki

one piece - Is Haki visible to other characters? - Anime & Manga Stack Exchange

People say Luffy's first signs of Haki was Baroque Works but I believe it was earlier than that, In the East Blue Arc Luffy was able to hit Kuro when he was

Who is the strongest character in One Piece that is not a pirate? - Quora

one piece - Could a swordsman with Haki cut up Buggy? - Anime & Manga Stack Exchange