One Piece: Luffy Senpai Ouen Kikaku! Barto no Himitsu no Heya!
Plot Summary: Bartolomeo and Otama look back on Luffy and the Straw Hat Crew's adventures in the Land of Wano. Otama tells Bartolomeo about her meeting with Luffy, and the events leading up to the fierce battle with Kaido.
Other name: One Piece Episode 1004.5; One Piece Special Episode: Barto's Secret Room; ルフィ先輩応援企画! バルトの秘密の部屋!