While the bride went on a one-night, two-day trip with a friend, Kenji enjoyed living alone with a treasured AV that he had hidden. However, after a long absence, he soars freely and inadvertently forgets to lock the front door. There, my sister-in-law Reiko came to play at the wrong time. Reiko, suspicious of the unlocked entrance, goes into the house in search of Kenji ... and encounters Kenji who is masturbating crazy.