Hiroshige, a nephew who decided to go to the family of his wife, Akai, in the summer vacation. The aunt who had met again after a few years was beautiful, and Hiroki who had yearning since childhood was excited. That night, I can't tolerate my aunt's masturbation. The aunt who notices the gaze notices that the woman experience is few, and it is pushed intensively. This summer, Hiroki will have an unforgettable experience...