Nearly the first 17 minutes of the film is the scene where Kitajima "pleases" his husband, but there is no return, the young man cannot return the card to his wife, perhaps because he is tired from work, so the boy does not want to spend more energy.
The next night the boss came to the house to discuss some important work for tomorrow, saw the beautiful employee's wife, and the man began to seduce the young girl.
Determined to fuck Kitajima before leaving, the boss pretended to forget the documents at the company, asked the employee to help him, and went from home to the company for more than 30 minutes, which was more than enough time for the old man u60 to "make meat" Kitajima.