Hashimoto goes into the house to find out the truth of the erotic aunt who is rumored among the students in the neighborhood that "I will let you have sex if you ask". What came out was Yukako, a chaste mature woman who knew nothing. Hashimoto, who was disappointed and returned, was worried about his classmate Hirai and sneaked in alone ... What was there was Yukako's foolery in agony with masturbation. Hirai, who can't control his excitement, unintentionally confesses that he is a virgin ...