The Marshal King is a Japanese manga series written and illustrated by Boichi, set in a post-apocalyptic future which resembles the Wild West. It began serialization online on Shueisha's Shōnen Jump+ service in February 2025.
Plot Jimmu Godspeed, son of legendary outlaw M. Godspeed, struggles to overcome his father's infamy; he seeks to collect the belongings of the first Marshal King to enforce law and order on a desolate world ruled by desperadoes.
Characters AGP Club Jimmu Godspeed A young, naive man whose gunfighting skills are undeniable, but he lacks social polish. Agera Dutch Sheaffer An observant young woman who becomes Jimmu's first follower. Mira Abigail Black The daughter of a famous rich Marshal, Mira was chosen to fight Jimmu in the third school challenge because of her unyielding endurance. Nano Serizawa / Zen X 800 An android from the past who witnessed the apocalyptic end of civilization; he has since adopted his former master's name. He is powered by a miniature stellarator fusion power device embedded in his chest. Marshals Principal Fair Lady Agera's grandmother, aka "The Invincible Marshal". A cyborg, she has been replaced from the neck down with a robotic body.
Desperadoes M. Godspeed A legendary outlaw who possessed the golden arms of the Marshal King. Wrangler M. Godspeed's former partner. Publication Written and illustrated by Boichi, The Marshal King began serialization on Shueisha's Shōnen Jump+ service on February 7, 2025. The series' chapters have been compiled into three volumes as of November 2025.
The series' chapters are published in English on Viz Media's Shonen Jump app and Shueisha's Manga Plus app.
Chapters not yet in tankōbon format These chapters have yet to be published in a volume: Shot 023 – 027
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