Okay gangbang lovers, I need your help! Over ten years ago I read a gangbang manga about idols. There was a demon woman who used the idols to gather the energy of men of something. In the last chapters the main girl fucked hundred (or more) of men. The biggest gangbang ever. The demon cursed her pussy to be able to fuck as many men as possible but her heart didn't resist. She "dies" after the massive gangbang. In the end they defeat the demon, the girl comes back and they have a happy ending. I don't remember the name of the manga. Anyone knows it?