I would guess that it's because in the demon realm, incubi and succubae only feed from other demons. So maybe feeding has no impact on the lifespan of demons.
Also, Ingyu lived a super isolated life in the demon realm, his family pretty much kept him locked in his room. So it makes sense he doesn't know much about himself, or that feeding from humans could shorten their lifespan.
That's my biggest question too! How did Ingyu go from being locked up by his family, to having the favor of Taegyu's "Master?" I really hope that gets explained soon because obviously something happened with Ingyu and that Master (I mean, we got that scene where Ingyu was naked on the Master's lap, but there was no explanation as to what their relationship was or how Ingyu came to be there). I do not even have a theory at this point since we've gotten so little information about that whole situation.
Just like I want to know what's up with Ingyu's choker and bracelets, and his earrings. There are so many things that still need to be explained. I'm so curious!!
Ok so ingyu is a incubus right but what happens if he takes too much of kangin's life force ..like how does ingyu not have common knowledge about himself...so the more sex he has with kangin he decreases his life line ... I love this story and want to know if anyone seen the raws and can anwser this for me ..and the moment ingyu finds out about himself will he social distance himself or stay until the end ? Please let me know what y'all think cuz I been thinking about this for a few chapters now ...
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