One Piece

Season 17, Episode 729

Episode Title: Flame Dragon King! Protect Luffy's Life!

Air Date: 2016-02-14

Overview:

Bounce-man's power has drained Luffy, leaving him in need of a rest before he can reuse his Haki, but luckily the gladiators from the Colosseum have come around and are focusing on taking down Doflamingo! Sabo steps in at a crucial moment to defend his brother, Luffy!