One Piece Card Game booster from set OP-17 "The World's Strongest Warriors", Japanese edition. It is the game's 4th-anniversary set, set on the giants' land of Elbaf with the Four Emperors, and it brings the Rocks Pirates into the card game for the first time.

- Edition: Japanese (JP)

- Set code: OP-17 "The World's Strongest Warriors" — 4th-anniversary set

- 131 card types in the set (plus 4 DON!! card designs)

- 6 new Leaders: Whitebeard, Luffy, Shanks, Kaido, Big Mom and Rocks D. Xebec

- Cards per pack: 6 / one booster box holds 24 packs

- Release: Japan, 22 August 2026