Yoshikazu came on a hot spring trip with his mother and relatives in place of his working father. As soon as he met his aunt Rei for the first time in a long time, he was captivated by her unaware closeness and voluptuous body... Rei also noticed his youthful, vigorous dick that she happened to see and decided to release her daily sexual desire that she couldn't satisfy with her husband on him. Yoshikazu, who was awakened to the pleasure of sex by Rei, approached her repeatedly like a monkey, completely absorbed. And Rei also responded to his inexhaustible sexual desire as if devouring it...