Teknik Master Rokushiki Tekkai Jabra,.

Soru, One Piece Role-Play Wiki

Is Rokushiki a fighting style? If it is, does Luffy use it? - Quora

Rokushiki, Wiki

One Piece: 8 Characters You Didn't Know Could Use Rokushiki

GPO Rokushiki Showcase

Character Profile - Rob Lucci

One Piece Gold - Rob Lucci's vivre card said that: The training required for the acquisition of rokushiki is akin to that used for acquiring haki. Akin = in the family Rokushiki

The Rokushiki Techniques Explained

Vivre Card Databook – Index Set (some new information) – The Library of Ohara

Robin uses Tekkai by MSJPSakura on DeviantArt