One Piece episode 379 ("Brook's Past! A Sad Farewell with His Cheerful Comrade!") is a pivotal, emotional episode that unveils the backstory of Brook and his deep connection to the whale Laboon. This episode initiates a crucial flashback, focusing on the Rumbar Pirates' promise to return to Laboon and the heart-wrenching farewell that defines Brook's loyalty. For more details, visit One Piece Wiki . Episode 379 | One Piece Wiki | Fandom