One Piece OP-17 The World's Strongest Warriors Japanese Booster Pack / Box

One Piece Card Game: The World's Strongest Warriors (猛者達の背中) – Japanese (OP-17)

Japanese Release Date: 22 August 2026 | Set Code: OP-17 | 4th Anniversary Series

English Equivalent: The World's Strongest Warriors (OP-17)

Overview

The World's Strongest Warriors (猛者達の背中 / OP-17) is the landmark 4th Anniversary main expansion booster set in the Japanese One Piece Card Game line. Celebrating four years of the TCG, this historic release focuses on legendary Emperor-level powerhouses, the legendary Rocks Pirates, and the giants of Elbaf.

Following Japan’s traditional main-expansion structure, OP-17 is distributed in a 24-pack booster box format. It introduces massive meta shifts across dual-color Leader cards, high-stat Character cards, and high-impact Event cards while delivering an unprecedented lineup of high-end parallel artwork chases.

Anchored by the debut of legendary historical figure Rocks D. Xebec, new Four Emperors Leader cards, and ultra-rare anniversary parallel treatments, OP-17 stands out as one of the most important and valuable sealed releases in One Piece Card Game history.

Key Features

4th Anniversary Milestone Set: Designed as a commemorative release featuring exclusive anniversary foil treatments, special parallel inserts, and high-density hit ratios across display boxes.

Rocks Pirates & Four Emperors Synergy: Centers heavily around legendary captains—featuring Rocks D. Xebec, Edward Newgate (Whitebeard), Kaido, Charlotte Linlin (Big Mom), and Shanks.

Elbaf & Giant Tribe Expansion: Introduces powerful new synergies supporting the Straw Hat Pirates in Elbaf alongside giant warriors Dorry, Brogy, and Hajrudin.

Dense Parallel Roster: Packed with Alternate Art Leaders, Character Parallel Rares, Special (SP) reprints, and elusive Manga Super Parallel chase cards.

Japanese Print Quality: Manufactured in Japan with high-grade card stock, crisp borders, deep color saturation, and official Bandai Namco security stamping.

Notable Cards

Rocks D. Xebec (Leader / Super Alternate Art) — The undisputed crown jewel chase of the set, marking the official TCG debut of the legendary Rocks Pirates captain.

Edward Newgate & Shanks (Manga Super Parallels / Leader Alt Arts) — Top-tier high-end anniversary chase cards commanding massive demand among high-grade display collectors.

Monkey D. Luffy & Kaido (Secret Rares / Super Alternate Arts) — High-impact Emperor character hits driving heavy demand for both tournament play and binder displays.

Charlotte Linlin & Gloriosa (Alternate Art Rares) — Highly sought-after character variants bringing strong visual appeal to the Four Emperors checklist.

Special Pandaman Variant Sub-Set — Rare parallel insert cards featuring hidden Pandaman artwork prints across select character slots.

Booster Details

6 cards per booster pack (guaranteed rare or foil slot opportunities per pack)

24 booster packs per sealed display box (144 total cards per box)

Base set size of 119+ numbered cards before secret rares, parallel arts, and special inserts

Printed in Japan under official Bandai Namco quality controls with premium card stock and high-gloss foil finishes.

Summary

The World's Strongest Warriors (OP-17) Booster Box is a monumental release in the One Piece Card Game ecosystem. Driven by the debut of Rocks D. Xebec, 4th Anniversary parallel treatments, and a full 24-pack display box structure, it delivers an exceptional, high-value opening experience for players, collectors, and investors worldwide.