COMO FUNCIONA O ROKUSHIKI DE ONE PIECE?

GPO Rokushiki Showcase

Rokushiki/Rankyaku, Mobianpedia Wiki

One Piece] Rokushiki

Rankyaku variações, Wiki

Rokushiki Robin action scene 2 - part 1 by Shinjojin on DeviantArt

Rokushiki., Wiki

World of Shinjoin! — The Nico Robin: Rokushiki style Project! (part2)

Rokushiki Robin 8 by Shinjojin on DeviantArt

Rokushiki - One Piece

Why aren't there more characters who uses Rokushiki? Like if you spend your whole life being a swimming champion only to have to eat a Devil Fruit that throws away those years