Rin who came home to her husbands parents house in the middle of summer. - However, her father-in-law has been hospitalized, and her husband is too busy with her work. - At that time, she got to know her neighbor Sakamoto and headed to his house for a walk. - Rin, who was interested in her naive reaction, peeled off her sweaty chest ... - Her virgin Sakamoto is unbearable and pushes her down. - Rin is squid many times by his caress that makes her joke serious. - And while she is returning home, the two who are sweaty and continue to associate violently ...