My nephew Hiroki decides to visit his relatives, Mr. and Mrs. Akai, during summer vacation. Hiroki, who had longed for his aunt since he was a child, couldn't contain his excitement when he met his aunt again after several years. That night, he can't stand it and sneaks a peek at his aunt's masturbation... Her aunt, who noticed her gaze, saw through her lack of experience with women and forced her to do so. This summer, Hiroki will have an experience he will never forget.
