One Piece 3D2Y - Overcome Aces Death Luffys Vow to His Friends (One Piece 3D2Y Asu no shi o koete! Rufi nakamatachi no chikai)
Trailer
The special takes place during the two year before the Straw Hats reunite on Sabaody. Luffy is currently in Rusukaina training to get stronger to take on the New World. However the training is interrupted when Hancock's sisters, Marigold and Sandersonia, are kidnapped by the Byrnndi World, a pirate who was locked away on Level 6 of Impel Down but escaped during Luffy.
