One Piece (dub) Episode 737 〈LEGIT – HANDBOOK〉

Sabo spent years training under the Revolutionary Army, specifically learning "Fish-Man Karate" from Hack and combat skills from Dragon himself.

Sabo, Monkey D. Luffy, Nico Robin, Koala, Hack, and Monkey D. Dragon. III. Plot Summary One Piece (Dub) Episode 737

The episode begins in the aftermath of the battle for Dressrosa, with the battle-weary Straw Hat Pirates and their allies resting at Kyros’s house. Sabo arrives to visit the sleeping Luffy and takes the opportunity to share his history with those still awake, primarily Nico Robin, Franky, and Zoro. Sabo spent years training under the Revolutionary Army,

Monkey D. Dragon rescued Sabo from the wreckage, but the trauma left Sabo with total amnesia regarding his identity and his brothers. Monkey D. Luffy