One Piece Card Game (Japanese) · Set guide
OP-17 The World's Strongest Warriors: 4th Anniversary Set
Four years of the One Piece Card Game, celebrated the way it deserves. OP-17 The World's Strongest Warriors released in Japan on August 22, 2026 (English: August 28) as the game's landmark 4th anniversary booster — and it brought the story to Elbaf.
- Release date
- August 22, 2026 (Japan) · August 28, 2026 (English)
- Set
- OP-17 — Booster Pack "The World's Strongest Warriors"
- Box configuration
- 24 packs per box · 6 cards per pack
- Set size
- 126+1 card types
- Japanese MSRP
- ¥240 per pack
Elbaf arc meets the Four Emperors
OP-17 takes the card game into the Elbaf arc, featuring the Straw Hat Pirates in their Elbaf outfits. The set's backbone is the Four Emperors, who appear as new Leader cards alongside members of their crews — plus the One Piece Card Game debut of the legendary pirate Rocks D. Xebec, who once led Whitebeard, Big Mom and Kaido before they became emperors themselves.
Rarity breakdown
With 126+1 card types — 6 Leaders, 45 Commons, 30 Uncommons, 26 Rares, 10 Super Rares, 2 Secret Rares, a Treasure Rare and alternate-art parallels — anniversary sets in this game have historically produced some of its most coveted chase cards, and OP-17 follows that pattern.
Frequently asked questions
When was One Piece OP-17 released?
OP-17 The World's Strongest Warriors released in Japan on August 22, 2026, with the English edition following on August 28.
What is the theme of OP-17?
OP-17 is the One Piece Card Game's 4th anniversary set, themed around the Elbaf arc, with the Four Emperors as new Leader cards and the card-game debut of Rocks D. Xebec.
How many cards are in OP-17?
OP-17 contains 126+1 card types: 6 Leaders, 45 Commons, 30 Uncommons, 26 Rares, 10 Super Rares, 2 Secret Rares plus a Treasure Rare and alternate-art parallels.
How many packs are in an OP-17 Japanese box?
A Japanese OP-17 booster box contains 24 packs of 6 cards.
© Akihabara TCG Warehouse. Set data compiled from Bandai's official announcements, October 2026.