However, with a great war having recently ended, many Extended, who are former soldiers, begin resorting to crime in order to survive.

However, Juzo's life is turned upside down when a renegade Extended breaks into his office, pleading for him to protect a young boy named Tetsurō Arahabaki.

[6] Shueisha collected its chapters in thirteen tankōbon volumes, released from February 19, 2015,[7] to December 17, 2021.

[11] An anime television series adaptation was announced in the April issue of Shueisha's Ultra Jump magazine in March 2019.

The second season was slated to premiere on April 9, 2020, but was delayed and instead aired from July 9 to September 24, 2020, due to effects attributed to the COVID-19 pandemic.