Read manga: Aku No Akuma

manga
Summary:

For 100 billion years shinjins (demigod)fighting against akujins (demons),Shinjins believe for akujins as evil race.Therefore shinjins decided to execute them all,But for 100 billion years alwaysakujins manage to protecttheir planet and their self,Until now descendant ofshinjins starting to attackedagain on akujins.