One Piece Season 17 Episode 729
Flame Dragon King! Protect Luffy's Life!
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!