The founder of a long-established major department store is his great-grandfather. And his home is a large mansion in Ashiya, a luxury residential area in Kansai. Miss Eri, who is a young lady with a "super" suitable for being called a child of both families. Perhaps because of her graceful upbringing, she is a soft-spoken and soft-spoken female college student. The ponytail further accentuates its cleanliness. This work makes such a young lady climb the adult stairs just to make her study social studies. Until the pure and pretty figure turns into a bewitching figure.
