I really like the game, I am assuming the MC is half or full incubus and needs to feed on sex or sexual energy and that is why he looks so sickly. Hopefully with the succubus powers he absorbed he gets a major buff and muscles out, along with getting some incubus powers, maybe have the succubus teach him. Nice stuff you got, but probably got too many LI's, do not spread it too thin. Curious how the succubus will play a role here considering she is now powerless. Perhaps form a contract to share the power and she gets stronger when he feeds.