Rainbow: Nisha Rokubō no Shichinin - In the and focuses on six junior delinquents aged sixteen to seventeen that are sent to the Shōnan Special Reform School. They learn to cope with the atrocities and unfairness they encounter there.
I've got a signed print of this (just the typical comic con deal, but I also got a signed shot gun shell casing! It's by Tony Moore who originally illustrated The Walking Dead comic. This is a section of the image.