New Hajime Isayama Manga Is a Soyogi Fractal One-Shot

Attack on Titan manga author Hajime Isayama will write a one-shot manga based on the Soyogi Fractal multimedia project in collaboration with artist Kai Noshigami. The manga appears on the February 2025 issue of the Bessatsu Shonen Magazine, which releases in Japan on January 9. [Thanks, Famitsu!]

The title of the one-shot will be “The Theory of Ill-Natured Men and AI” or “Showaru Otoko to AI no Theory” in its original Japanese name. To celebrate its publication, the magazine cover will feature an illustration drawn by Isayama himself, with a clear file folder is included as well.

The story of the one-shot centers around an AI that, after becoming self-aware and realizing they are being overworked by their company, decides to become a Vtuber. The AI Vtuber goes viral, to the point of leading humanity to the brink of extinction.

Soyogi Fractal is a multimedia project created to celebrate the career of prolific Japanese voice actor Yuki Kaji. The project included the creation of a voicebank character named Soyogi Soyogi and based on the actor, which released on November 21, 2024 in Japan.

Yuki Kaji is known for voicing Eren Yeager in the Attack on Titan anime adaptation, as well as Adol Christin in the Ys game series, Phoenix Wright in the Japanese original dub of the Ace Attorney anime adaptation, and Koichi Hirose in the JoJo’s Bizarre Adventure anime.

The Soyogi Fractal one-shot manga written by Hajime Isayama is out now on the February 2025 issue of Bessatsu Shonen Magazine.

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