Inma no Kyoudai

Tsubasa and Mizuki are a brother and sister who share a secret: they are both incubi and succubi, beings that feed on sexual energy. Forced to suppress their true natures, they live a seemingly ordinary life, hiding their desires from the world around them.

Their carefully maintained facade begins to crack when their suppressed instincts start to surface, threatening to expose their true identities. As they struggle to control their urges, they find themselves drawn into a world of temptation and forbidden acts, where the line between right and wrong blurs and their bond is tested in ways they never imagined.