This is not a manga about "good guys surviving bad guys." It is a manga about how quickly social order crumbles when the rule of law is removed. The characters are forced into morally grey areas constantly. The distinction between sanity and insanity blurs. The protagonist, Kyou, is a compelling lead because he isn't a typical shonen hero; he is a delinquent with a strong moral compass who is pushed to his absolute limit.
Given the potentially sensitive and complex nature of your topic, here are some considerations: raw manga satanophany
: The term "raw" in the context of manga usually refers to untranslated, uncensored, or unedited content straight from its country of origin, often Japan. This implies that the material hasn't undergone the typical editing and censorship processes common in manga published for Western or other international audiences. This is not a manga about "good guys surviving bad guys