Jinki Gals | Secret Collection

The JINKI GALS "SECRET" COLLECTION is a rare, limited-edition art booklet created by manga artist Shirou Tsunashima. It features illustrations of the female characters (the "Jinki Girls") from the Jinki manga and anime series, including titles like Jinki: Extend and Jinki: Extend Relation. Key Details and Context

Behind-the-scenes material and bonus pages that flesh out the world of The "Secret" Factor:

The "Secret" Content: These illustrations were eventually compiled into this limited "Secret" edition. True to its name, it contains more "provocative" and experimental artwork of the series' heroines, like Akao Hiiragi, that was considered too intense for standard magazine publication. Why is it so rare? jinki gals secret collection

This is why the units are overpowered; they literally come from a timeline where they had to carry the weight of a dying world.

Origin: The booklet was primarily distributed as a special "all-purchaser service" (応募者全員サービス) for fans who bought all five volumes of the JINKI Shinsetsu: Complete Edition manga. The JINKI GALS "SECRET" COLLECTION is a rare,

• Exclusive Units: It features limited-edition "Secret Variants" (labeled [S]) of core characters. For example, while you can pull a standard Hikari the Engineer, only the Secret Collection holds Hikari [Shadow Protocol].
• Legacy Gear: It contains weapon schematics and memory chips from events that ended 18+ months ago, making it the only way to complete old sets.
• The Vault Key System: Access isn't free. You need "Vintage Cores," a currency that cannot be bought directly with premium gems.

JINKI GALS "SECRET" COLLECTION is a rare, limited-edition art booklet released as a special bonus for fans of the manga and anime series.

3. Investigation Findings

Several consumer protection watchdogs and review aggregators have flagged this entity: JINKI GALS "SECRET" COLLECTION is a rare, limited-edition

Sources: Interviews with anonymous collectors (2022–2024), Jinki: Extend Fandom Wiki archives, and public auction listings for Jinki-era doujinshi.