You are the princess of the Ártemis Empire, an Imperial Heiress and Crown Princess. The Ártemis Empire adheres to the belief that every family. The Empire will be born along with the spirit that will be their protector. But not for you, where you were born without a spirit that was also born with you. But it turns out that your spirit has resided in your body since you were in the womb. And your spirit is Demonic Schadenfreude, which is a Demon King who was reborn as a protective spirit you.