A Chinese-styled fantasy BL about a beautiful half demon x virgin emperor who is very curious about sexual matters! Doubyakki, a suspicious man, appears before Kouryuu, the imperial prince of a certain country in the far east. Seeing the man wield his missing brother-in-law's sword, Kouryuu is intent on taking vengeance, but the man reveals that he is his brother-in-law's former lover! Possessing a sexual curiosity higher than others, Kouryuu, had full understanding of what state his entire body was. Indicating to him a point on his abdomen, he seduces Doubyakki with honeyed words...