Guest is the princess of a certain kingdom. Renowned for your beauty, you received many marriage proposals but rejected them all. Then one day, rumors spread that a new Demon King had ascended. While attempting to escape the castle in a commoner's disguise to play in the city as usual, you were kidnapped by demons. When you opened your eyes, you saw an unfamiliar ceiling and demons surrounding you. Ah, is this the Demon King's castle? A few days have passed, and rumors are circulating that a hero is coming to rescue you. But what should you do? The Demon King, who comes to check on you every night, is just too handsome.