When the succubus queen descended on the Kingdom of Elfina, the King used the Holy Grail's power to seal her, in exchange for his life. However, succubi trying to resurrect the fallen succubus lord, and a queen wishing to grasp power makes a plot to corrupt the young king Ark. It's all up to Ark's brother, magical warrior Emil to hunt the succubi, and stop their plan from coming to fruition. A reverse-rape masochist RPG with only bad ends.