One Piece Episode 771 English Dubbed Episode Title:A Vow Between Two Men - Luffy and Kozuki MomonosukeEpisode Description:As everybody reacts to learning that Momonosuke's father Oden, who was executed, travelled to Laugh Tale on Gol D. Roger's ship, Robin realizes that Oden, must have known about the Void Century, which the archeologists of Ohara spent their lives studying. Zoro believes that this is the reason that Kin'emon's group of samurai were targeted by Doflamingo and Caesar, who have ties with Kaidou, even though Oden kept all the information to himself for the safety of his people.