Yua, a liberal arts student at university, was looking for a part-time job, but when her mother's friend happened to be looking for a tutor, she gladly accepted. From the very first day of work, her student Shota becomes obsessed with Yua's breasts. One day, at Shota's mother's suggestion, Yua decides to stay over. A variety of naughty pranks unfold in the bathroom, kitchen, and bedroom!