 If you liked
Deadman Wonderland
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 ...then you might like
Area D: Inou Ryouiki
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Both have people that acquired some kind of power after a certain disaster that occurred in the city they lived in. Because of that, part of those people were sent to prison. A special prison.
Both of these are centered in prisons after some unnatural disasters happened to the world, which then lead to the manifestation of superpowers in ordinary people. A lot of violence, but also a lot of determination in the characters. Shows that you can still choose to be good, even though everyone else hates you.