The boarding house life that I saw in my dreams. Moreover, there is a beautiful girl in the house! Her name is Kirara Seiga. But she's a little weird. She has a devil's tail on her butt!? Surprisingly, the boarding house was the residence of the devil family! Moreover, the devil's daughter seems to have a custom of serving anyone who sees her tail. Being liked by the devil Kirara, Taro is a second-year junior high school student who has mixed feelings, such as being happy and scared, but...!? Fantastic, devilish comedy of body uruuru!!