My nephew Ryo, who was taken care of by Aya (Tachibana) couple during his parents' trip, was fascinated by the pheromones of his aunt, who he hadn't seen in a long time. During sex with her husband, Aya notices that Ryo is peeking, but on the contrary, it increases her excitement. The next day, Aya overwhelms Ryo, who is indulging in masturbation, with her adult charm. And then the two... Aya settled the affair and fell in love with her nephew, but this triggered a disturbing atmosphere between the couple.