One Piece Card Game OP-17 – The World's Strongest Warriors | Japanese Booster Box

Official 4th Anniversary Set

The Most Anticipated Anniversary Set of the One Piece Card Game in 2026
Pre-order the Japanese booster OP-17 – The World's Strongest Warriors (世界最強の戦士), the 17th main set of the One Piece Card Game. A major release that promises to be one of the most important of the year for players and collectors.

The Japanese name of the set — 世界最強の戦士 — translates to "The World's Strongest Warriors," a theme that immediately triggered a wave of speculation around legendary fighters, icons from a bygone era, and powerful Leaders from throughout One Piece history.

What's included:

• 1x Japanese Booster Box OP-17
• 24 boosters per box
• 12 cards per booster
• Original Japanese edition

Note: this announcement concerns only the product presented. Any additional bonuses or accessories are only included if explicitly mentioned.

Set Composition (127 card types):

• 6 Leaders
• 45 Commons
• 30 Uncommons
• 26 Rares
• 10 Super Rares
• 2 Secret Rares
• 6 Special Cards
• 1 Treasure Rare
• 1 DON!! Card
• Alternative arts & parallel cards included

Why OP-17 is an exceptional set:

• Official 4th Anniversary Set — one of the most important events on the 2026 One Piece TCG calendar, particularly anticipated by collectors and competitive players.
• Return of popular nostalgic Leaders with brand new effects, capable of shaking up the current meta.
• New powerful characters from iconic One Piece arcs
• Cards with luxurious designs, alternative arts, and premium foils
• Treasure Rare included — the highest rarity in the set
• Japanese version available before international release — reduces the usual gap between the Japanese and English markets.

Product details:

• Product: One Piece Card Game Booster Box OP-17
• Set name: The World's Strongest Warriors (世界最強の戦士)
• Edition: 4th Anniversary
• Language: Japanese
• Type: Booster Box
• Contents: 24 boosters × 12 cards
• Number of card types: 127
• Release date: August 2026
• Franchise: One Piece Card Game
• Condition: New / Sealed
• Origin: Japan