Masakazu has lived in a father-son family since he was a child. This summer, my father Noboru remarried Honoka, a subordinate of the company. As expected, the young and beautiful Honoka is Masakazu's favorite Don Pisha, and Masakazu turned to a faintly lascivious delusion every day. One day, Masakazu, Noboru, and Honoka head for a short trip to a local hot spring inn to commemorate their remarriage. However, Noboru leaves the inn due to a sudden call for work. That's how the immoral sexual feast started ...
