Kyoto has become a place where humans and monsters have chosen to coexist, and Chimi-Mouryo has become rampant. Saki, a succubus who attends a school in Kyoto that has turned into a magical land, uses her beauty and abilities to become the school's princess!!Even such a reckless girl had a natural enemy. His name is Ashiya Yuu!A tough-looking man who won't fall for only himself and is loved by other demi-humans!!!Saki, who calls herself the queen, can't stand this sight, so she tries to bring down Ashiya faster than the other demi-humans, but...!!?