One Piece Card Game OP-18, officially titled Water Seven and the Knights of God (listed by Bandai internally as The Dominance of God), is one of the most anticipated booster sets in the game's history.
It brings together two huge collector stories in one box: Franky finally getting his first-ever Leader card, and two Secret Rare cards illustrated by Final Fantasy character designer Yoshitaka Amano.
Most retailers are pointing to a November 2026 worldwide release, though the exact day is still settling and worth double-checking before you plan a release-day pickup.
This guide walks through everything currently confirmed about OP-18 so you know exactly what you are buying before pre-orders lock in.
OP-18 is the eighteenth main booster set for the One Piece Card Game, and its title tells you exactly where the story is headed: back to Water 7, with the antagonist group CP9 branded as the Knights of God for this release.
The set is built around three previously-established themes plus one brand-new archetype, a structure Bandai has used for several recent sets to give both new and returning players something to chase.
Bandai has only confirmed a November 2026 worldwide release month for OP-18. Most retailer listings point to November 20, 2026, while a smaller number list November 30, 2026, so treat either date as provisional until Bandai posts an exact day.
Local card shops have already started listing individual prerelease and release events for the third and fourth week of November, which is a normal pattern for a set this size.
A single OP-18 booster box contains 24 packs, with 12 cards per pack, matching the standard format Bandai has used across recent One Piece TCG sets.
Early retailer listings point to an estimated USD MSRP of roughly $95.76 per box. No official Canadian dollar price has been published yet, so budget in USD terms until a Bandai Canada or major retailer price is confirmed.
OP-18's published rarity list includes 6 Leader cards, 45 Common, 30 Uncommon, 26 Rare, 10 Super Rare, 2 Secret Rare, 6 Special Card, 1 Treasure Rare, and 1 DON!! card, for 127 total card types in the set.
That is a fairly typical spread for a modern One Piece TCG set, with the Secret Rare count sitting on the lower end, which tends to push demand and price on those two cards specifically.
The single biggest story hook in OP-18 is Franky receiving his first Leader card in the game's history, numbered OP18-021, a green and purple Leader tied to the Water Seven, Franky Family, and Straw Hat Crew archetypes.
Long-time players have requested a Franky Leader for years, and his arrival alongside a Water 7-themed set is a natural, story-appropriate pairing rather than a random release-order coincidence.
OP-18 features two Secret Rare cards illustrated by Yoshitaka Amano, the character designer behind the Final Fantasy series: Loki, a reprint of the OP-17 Secret Rare with new Amano artwork, and Saint Shamrock, a brand-new OP-18 Secret Rare original illustration.
This is a genuine crossover-art event rather than a standard alternate-art parallel, and it is the kind of chase-card story that tends to move both interest and secondary-market prices well beyond a set's normal release window.
Whether you are opening this box on release day or holding it sealed as a long-term piece, a fresh, unopened OP-18 booster box is worth protecting the moment it arrives.
A rigid display case keeps a sealed box shelf-ready and visible, while a fitted protective sleeve is a lower-cost option for anyone who just wants to keep the box clean in transit or storage.
Rather than reacting to hype as it builds toward November, sketch out a simple plan now: whether you want one box to hold sealed, one to open, or a mix of boxes and singles aimed at specific cards.
Revisit that plan once Bandai confirms the exact release day and official pricing, since the small details you lock in early make the actual release week far less stressful to navigate.
Yes, Bandai has confirmed a worldwide November 2026 release, though the exact day still varies slightly by retailer listing.
Two, and both are illustrated by Yoshitaka Amano rather than the game's usual art team.
Yes, OP18-021 is Franky's first-ever Leader card in the One Piece Card Game.
24 packs at 12 cards per pack, for 288 cards per sealed box.
The safest first move with any high-demand booster set is protecting the sealed product the moment it arrives, before you decide whether to open, hold, or split a box.
EVORETRO's Acrylic Case Display for the One Piece OPP 4-6 booster box format keeps a sealed OP-18 box shelf-ready and visible from every angle while you decide your next move. Check out the EVORETRO Acrylic Case Display for Bandai One Piece OPP 4-6 TCG Booster Box.
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