Around 10 years after World War II, a group of delinquents are sent to the Shounan Special Reform School to learn how to cope with the atrocities and unfairness they encounter there. A student who has already been residing there when the teens arrived acts as a mentor, teaching them about friendship and guiding them through difficulties.
(Based on Abe George and Kakizaki Masasumi's Rainbow: Nisha Rokubou no Shichinin manga.)
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First Episode by FroZen (Frostii & Saizen)
First episode really impressed me, looks like one of the three new series which I'll be anticipating each week (Other being Senko no Night Raid and Hakuouki) - though I reckon this series is probably best new one this season.
Quite dark, and interesting themes, though first episode went relatively slow (little happened, very much introduction to the characters, and how they got to be in the situation they're in).
I like the artwork, wasn't surprised to see Madhouse in the end credits, fairly typical of their work.
The voicecast is also impressive, immediately recognised a few voices, and when went searching surprised to see so many well known names.