One day, Hiroshi visited his aunt Ryoko's house. When his cousin stepped out for groceries, he found himself alone in the room. Unable to ignore the sight of Ryoko's voluptuous G-cup breasts, Hiroshi rushed to the bathroom. Suddenly, Ryoko approached him closely, whispering the suggestive line, "You look just like your father," leaving Hiroshi stunned and confused. As Ryoko's mysterious actions intertwine with Hiroshi's growing bewilderment, the tension builds relentlessly.