In depressed post-WWII Japan, seven teenage delinquents are incarcerated in an infamous jail and have to deal with the humiliation and abuse of prison life, and also share their cell with a more seasoned inmate.
Lovejoy: Ghibli’s Grave of the Fireflies is a highly-acclaimed and celebrated film but frankly I couldn’t stand it…it was too damned depressing. So far I’m getting that same vibe with Rainbow; I appreciate an anime digging deep into one of Japan’s darkest times and their effect on youths, it’s not necessarily the genre I’m looking for, and nothing in the first episode stood out as being particularly groundbreaking for a prison drama.
RABUJOI - An Anime Blog 