One Piece TCG OP-18 Booster Box: Expected Release, Timeline & Early Predictions (2027)

Jan 28th 2026

One Piece TCG OP-18 Booster Box: Expected Release, Timeline & Early Predictions (2027)

The One Piece Card Game OP-18 booster box is the next upcoming core set following OP-17, positioning it as a key release for the late 2026 to early 2027 One Piece TCG product cycle. While Bandai has not officially revealed the set title or card list, OP-18 is already on the radar for players and collectors due to its timing, potential anniversary relevance, and speculation around major story arcs.

With Bandai transitioning to a simultaneous worldwide release model starting in 2026, OP-18 is expected to launch globally without regional delays, further increasing demand for OP-18 booster box preorders.

Disclaimer: As of January 2026, all OP-18 details are speculative and based on historical release patterns and community discussion. Official information may change once Bandai publishes formal announcements.

OP-18 Booster Set Overview

Product Name: One Piece Card Game OP-18 (Title TBA)
Product Code: OP-18-BB
Estimated Release Date: Q1 2027 (January–March 2027)
Booster Box Format:
- 24 booster packs per box
- Approximately 6 cards per pack

OP-18 is expected to follow OP-17’s Q4 2026 release, maintaining Bandai’s established cadence of major booster sets.

OP-18 Release Timeline & Pre-Order Expectations

Expected Launch Window: Q1 2027
Preorders: Likely to open mid-2026

The OP-18 release window may align with heightened interest due to the One Piece Card Game’s 5th anniversary, potentially increasing collector demand and early sell-outs.

Announcement Status: What Is Officially Confirmed?

As of January 2026, there are no confirmed cards, themes, or mechanics revealed for OP-18.

The official One Piece Card Game card list currently extends only through OP-13: Carrying On His Will
OP-14 (Azure Sea’s Seven) and later sets have limited previews
No OP-18 card list, leaders, or visuals have been announced

Bandai typically reveals new sets 6–9 months prior to release, suggesting OP-18 previews may begin mid-2026 via official channels such as the One Piece Card Game Topics page and social media platforms.

Click here to buy OP-14 Azure Sea's Seven

Expected OP-18 Pack Structure & Card Counts (Speculative)

Based on prior One Piece TCG booster releases, OP-18 is expected to follow the standard structure:

Guaranteed foil or holo card per pack
Typical rarity distribution:
- Common (C)
- Uncommon (UC)
- Rare (R)
- Super Rare (SR)
- Secret Rare (SEC)
Estimated 150+ total cards, consistent with recent mainline sets

Most recent sets have featured 8–12 SR/SEC chase cards, which OP-18 is also expected to include.

OP-18 Theme & Leader Speculation

While no themes are confirmed, community forecasts suggest OP-18 could focus on:

God Valley arc—high-lore characters, legendary figures, and flashback-style cards
Live-action Season 3 synergy, depending on Netflix release timing
New or alternate Leader variants, potentially including characters such as Dracule Mihawk

Previous sets like OP-13 introduced multiple high-profile leaders (e.g., Luffy and Ace), setting a precedent for OP-18 to deliver similarly impactful leader cards.

Click here to buy Egghead Starter Set ST-29

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