Unbreakable Manga Returns Next Spring for Final Arc on YanChan Web

Tamaki Kaigane’s manga adaptation of Kōji Yanagi’s Unbreakable: The Undefeated (Unbreakable Yaburezaru Monotachi) will resume next spring with its final arc. It will move from Akita Publishing’s Young Champion magazine to the publisher’s YanChan Web platform.

This year’s 23rd issue of Young Champion announced the news on Tuesday.

Kaigane launched the manga in Young Champion in August 2025. Akita Publishing shipped its first compiled volume on June 19. Kadokawa published Yanagi’s original novel in 2024.

The novel takes place during the Peace Preservation Law of 1925, which targets people who believe in “Marxist” ideology.

Proletarian writer Takiji Kobayashi chooses a crab cannery ship’s harsh working conditions as the subject of his next novel. His choice attracts a special police task force that monitors ideological threats. Two spies are sent to watch his activities.

Yanagi published the original Joker Game novel in 2008. It won the Nihon Suiri Sakka Kyōkai-shō (Mystery Writers of Japan) award in 2009.

Yū Irie directed a live-action adaptation, which premiered in Japan in January 2015.

Yanagi followed the original novel with three sequels:

• Double Joker in 2009
• Paradise Lost in 2012
• Last Waltz in 2015

The series has more than 1.35 million copies in print.

Production I.G’s television anime adaptation of Joker Game premiered in April 2016. Crunchyroll streamed it as it aired in Japan, while Funimation streamed an English dub.

Subaru Nitō launched a manga adaptation of the anime in Mag Garden’s Comic Garden magazine in February 2016. It ended in 2018.

A stage play adaptation of the anime opened in 2017. A second stage play followed in 2018.