One Piece: Oounabara ni Hirake! Dekkai Dekkai Chichi no Yume!

Synopsis

Two weary pirates, Bonnie and Max, long to escape their captain's ship but lack the funds. Overhearing their plight, three captive children, led by Amanda, whose father was a renowned treasure hunter, propose a pact: freedom in exchange for knowledge of a hidden treasure. The group of five narrowly escapes to a secluded island, only to encounter Luffy and his companions. Their pursuit leads to the capture of Luffy and Amanda by the formidable Bayan Pirates, also coveting the treasure. Now, Luffy and his allies must confront the pirates and secure the treasure Amanda's father concealed. Through this ordeal, Amanda begins to comprehend her father's adventurous spirit, a passion she once resented due to his frequent absences.