A 26-episode anime television series adaptation produced by Madhouse and directed by Hiroshi Kōjina was broadcast on Nippon TV from April to September 2010.

In 1955, there were six boys who committed crimes and fell into the Shōnan Special Reformatory, block 2, cell 6.

The story follows the boys' lives during their time in the reformatory and the years after they leave, highlighting the struggles the lower class faced in post-war Japanese society.

[10][11] An anime television series adaptation was produced by Nippon TV, VAP, and animation studio Madhouse, directed by Hiroshi Kōjina, with Hideo Takayashiki handling series composition, Ai Kikuchi designing the characters and Yū Takami composing the music.

It was released on a Blu-ray Disc set, including Japanese audio with English subtitles, on February 27, 2024.