Chapter 1 of Rainbow is a punch to the gut. It’s ugly, it’s sad, and it’s absolutely necessary. This isn’t a story about escaping prison. It’s a story about surviving your own darkness.

Rainbow: Nisha Rokubou no Shichinin Chapter 1 introduces seven teenagers facing brutal conditions in 1955 post-war Japan's Shōnan Special Reformatory. The story focuses on their struggle for survival and the formation of a deep, protective bond under the guidance of fellow inmate Rokurouta Sakuragi.

Chapter 1 is just the beginning. The manga is divided into four major story arcs set between 1955 and 1964, with the main settings being Tokyo and Shōnan. After the events at the reformatory, the boys eventually face the "real world." They struggle against the discrimination and rejection of society, trying to build new lives while never forgetting the bond they formed in Cell 6. The manga has been praised for its realistic character development, its unflinching look at post-war Japanese society, and its powerful emotional payoff.

Rainbow: Nisha Rokubou no Shichinin chapter 1 launches a dark, gritty story of survival set in 1955 Japan, following six young delinquents sent to a brutal reform school. They face dehumanizing abuse from staff but find hope through an older inmate, Rokurouta Sakuragi, who initiates a powerful bond and brotherhood, promising to endure the hardships together. Share public link

You can read the original manga on platforms like MangaDex or MangaFire .

Report: “Rainbow – Nisha Rokubō no Shichinin” – Chapter 1 (Full) (Prepared 13 April 2026)