One Piece Season 21 Episode 991
Enemy or Ally? Luffy and Yamato!
Evading Ulti and Page One, strong members of the Tobi Roppo, Luffy tries to find out what Kaido’s son Yamato’s motive is. However, the two get in a fight. Taking Luffy’s punishing attacks, Yamato remembers someone he fought against in the past.