Rainbow: Nisha Rokubou no Shichinin

Six minors (16 or 17 years) answering to the nicknames of Joe, Mario, Suppon, Baremoto, Biceps, and Cauliflower are put into a reformatory for offenses such as aggravated assault, swindling, evading arrest, etc. Their stay in hell begins immediately upon their arrival. Accommodated by a doctor pedophile, they are placed under the watch of a despotic and brutal crew. Cellmates with a certain Sakuragi (called Anchan), the tension rises between the band of buddies and their new "friend." A brawl breaks out, and the six newbie prisoners are beaten down by the mysterious young man with a talent for boxing.

Set in 1956, (ten years after Japan's defeat in WW2 during a time of great poverty and hardship) the story follows the lives of these seven characters surviving in their hellish environment, but also their disillusions due to the rejection by the outside world and by their close relations. This is about the extraordinary and invincible friendships between these young men.

[summary from MangaUpdates].

Suggested keywords for this series includes - boxing, child abuse, delinquents, poverty, prison and sexual abuse.

Read the translated manga series online at MangaFox.

A new anime series scheduled to air on April 7th, 2010.