Teacher Seira Moroboshi pays a home visit to Shota-kun's house, sparking much talk among students. However, thanks to Shota's scheme, his parents are away. Seizing the opportunity, Shota pulls a bold prank on the popular and rumored top-ranked teacher, who boasts an impressive 97cm H-cup bust. He gropes her large breasts in the kitchen and even manages to take a bath together with her. Going even further, under the guise of health and physical education class, he gets her to teach him the correct way to put on a condom in this daring escapade.