One Piece Card Game OP-17 The World's Strongest Warriors Booster Box Japanese
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About OP-17 The World's Strongest Warriors
OP-17 is the 4th anniversary main set of the One Piece Card Game, released in Japan on August 22, 2026. The set moves the story into Elbaf, the legendary homeland of the Giants, and builds its roster around the Four Emperors. The Straw Hat Crew appears in new Elbaf attire, and Loki, the former prince of Elbaf, enters the game.
The chase lineup includes two Secret Rares, Rocks D. Xebec (OP17-118) in his first ever card and Loki (OP17-119), plus Manga treatments for Edward Newgate, Shanks, Kaido, and Charlotte Linlin, and a Super Leader Parallel Luffy (OP17-079). OP-17 also marks the start of the global simultaneous release schedule for the One Piece Card Game.
Product Specs
Set Name
The World's Strongest Warriors
Set Code
OP-17
Language
Japanese
Manufacturer
Bandai
Release Date (Japan)
August 22, 2026
Theme
Elbaf Arc and the Four Emperors
Milestone
4th Anniversary main set
Booster Box Contents
24 packs
Cards per Pack
6 cards
Total Cards per Box
144 cards
Base Set Cards
119 cards
Secret Rares
Rocks D. Xebec (OP17-118), Loki (OP17-119)
Pack Price (Japan)
¥240 per pack
Case Quantity
12 boxes per sealed case
Authenticity
100% official Bandai Japan product
Ships From
Pennsylvania, USA
About Japanese One Piece Cards
Japanese booster boxes release earlier and are printed in larger quantities, which is why they are more affordable than English versions. Cards are in Japanese, but artwork and layout are the same, and collectors love them for their clean look and strong pull rates.
They are not tournament-legal outside Japan, but they are perfect for collecting, display, and chasing alt-arts. All products are 100 percent official Bandai Japan imports.
Note that the Japanese and English editions of OP-17 use different pack configurations. The Japanese edition runs 6 cards per pack across 24 packs. The English edition uses a 12 card pack.
Read our full guide: Japanese vs English One Piece booster boxes
Japanese Product Seals
Japanese One Piece booster boxes are not shrink-wrapped. They are factory sealed by Bandai with a single piece of clear tape over the top flap.
What's Inside?
24 Japanese booster packs
6 cards per pack (144 cards total)
119 cards in the base set: 45 Common, 30 Uncommon, 26 Rare, 10 Super Rare, 6 Leader, 2 Secret Rare
Two Secret Rares: Rocks D. Xebec (OP17-118) and Loki (OP17-119)
Manga treatments for Edward Newgate, Shanks, Kaido, and Charlotte Linlin
Super Leader Parallel Luffy (OP17-079)
Straw Hat Crew in Elbaf attire
Factory sealed in Japan
1 Case = 12 Booster Boxes
Why Collectors Trust SaifrTCG
Fast, reliable US shipping - Orders ship within 1 business day of stock arrival 100% authentic Bandai Namco product - Directly imported from Japan Trusted seller - 45+ verified 5-star reviews from US collectors
Frequently Asked Questions
Are these cards in Japanese? Yes. OP-17 is the Japanese-language edition of the One Piece Card Game. All cards are printed in Japanese text.
Do I need to pay import or customs tax? No. All international shipping, customs, and import costs are already included in the listed price.
When will my order ship? In stock now. Orders ship within 1 business day from our Pennsylvania warehouse.
How is this different from the English OP-17? The Japanese edition released on August 22, 2026 and contains 24 packs of 6 cards. The English edition released on August 28 and uses a 12 card pack. This listing is for the Japanese edition.
What are the big chase cards? The two Secret Rares are Rocks D. Xebec (OP17-118), his first card in the game, and Loki (OP17-119). The set also carries Manga treatments of the Four Emperors and a Super Leader Parallel Luffy.
