Rin returns to her husband's hometown in midsummer. - However, her father-in-law was hospitalized, and her husband was also busy with work and could not help her. - At that time, I met my neighbor Sakamoto and went for a walk to his house... - Rin, who was interested in his naive reaction, opened her sweaty chest... - Sakamoto, a virgin, can't bear it and pushes her down. - Rin is made to cum over and over again by his caressing, which was meant to be a joke but becomes serious. - And while they are returning home, the two sweaty and continue to interact intensely...