Piece 3d2y: One

The story follows Luffy during his training on Rusukaina. The narrative centers on his struggle to overcome the trauma of Ace's death and his vow to become stronger for his crew. The peace is disrupted when , an escaped Level 6 prisoner from Impel Down, kidnaps Boa Hancock’s sisters to lure the Pirate Empress into a trap. Luffy and Hancock must team up to stop him, providing a rare and entertaining look at their combat dynamic. One Piece 3D2Y: Byrnndi World's Futile Journey

is a television special that serves as a bridge for the two-year timeskip, focusing on Luffy's emotional recovery and training under Silvers Rayleigh. While technically anime-original "filler," it is widely recommended for fans for its deeper look into a period the main series largely skips over. Plot & Themes One Piece 3D2Y