DASS-998 | I took in a cheeky, handsome young relative, only to find out he was actually a beautiful girl. For four days, she kept teasing me with "Uncle, is that your taste?", and in the end, we had sex to teach her a lesson, and we decided to live together. (Kuramoto Sumire)

A cheeky relative I thought was a boy...
Sumire, a college student, finds herself without a place to stay for four days due to moving troubles and ends up staying at the home of her relative, Keisuke. Keisuke initially mistakes the sassy Sumire for a boy, but after helping her out in her time of need and discovering she is actually a girl, the two begin to grow closer...