1. Timeline of the Decoupling (2022–2026)

The rift between Shueisha’s corporate hierarchy and Shihei Lin—the architect behind Chainsaw Man, SPY×FAMILY, Dandadan, and Look Back—has been developing across three distinct operational phases:

• Phase 1 (2022 – Freelance Transition): Lin resigned from Shueisha’s staff editorial desk to operate as an independent freelance contractor while retaining primary editorial stewardship over Jump+’s flagship properties.
• Phase 2 (Spring 2026 – Mix Green Launch): Lin established Mix Green, launching an independent editorial studio and preparing a proprietary digital submission and publishing pipeline.
• Phase 3 (September 30, 2026 – Escalation & Direct Contracting): Shueisha announced the termination of all business relationships with Mix Green. Within hours, Lin issued a counter-statement revealing that Mix Green holds direct client management contracts with the mangaka for SPY×FAMILY (Tatsuya Endo), Dandadan (Yukinobu Tatsu), Centuria, and WITCHRIV, bypassing Shueisha’s editorial division entirely.

2. The Structural Mechanics: Editorial vs. Distribution

This dispute exposes the underlying structural vulnerability of modern Japanese publishing: The distinction between editorial studio talent and distribution channels.

For decades, major publishers (*Shueisha, Kodansha, Shogakukan*) controlled both layers. Editors were internal gatekeepers who developed creators while capturing all IP equity for the publishing house. Lin’s move mirrors the mid-20th century Hollywood agent revolution or modern record label disintermediation: creators realize that their primary creative equity is tied to their **editor/packager**, not the platform printing the volume.

3. Strategic Implications for Shueisha & Jump+

• Platform Impotence: Shueisha cannot afford to cancel or alter SPY×FAMILY or Dandadan—these titles represent the core revenue engine of Jump+ and global media licensing. By attempting to “fire” Lin while the authors remain contractually bound to Mix Green for editorial management, Shueisha has effectively been forced to accept an external agency operating inside its own digital flagship magazine.
• The Incubator Risk: Lin’s network of creators (Fujimoto, Tatsu, Endo) functions as an interconnected creative ecosystem. Mix Green now stands as an independent incubator capable of harvesting top-tier talent, developing new IP, and pitching finished properties to the highest distribution bidder—whether that is Shueisha, Kadokawa, or direct-to-digital platforms like Webtoon or Amazon.
• Precedent for Corporate Brain Drain: Other veteran editors now have a proven playbook to exit corporate publishing houses, form boutique agencies, and take their star author rosters with them.