Nōpan chikan densha mie chatta!!

In order to avenge the murder of an old friend, a recently suspended female police officer goes undercover at an illegal gambling den where the winning prize is a night with one of the female staff.

Recently, Azumi was shocked to learn that her husband Norio goes to an adult entertainment industry. While they were having sex, Norio blurted out, "As usual, you're behind the scenes." At first, she suspected that Norio was cheating on her, but when she investigated, he confessed that he frequented the sex industry...

Hiromi Katori, a new employee, felt unwell during work and went to the infirmary. Then, instead of the usual Maki Kitagawa, the person there was Hanako Minamida, a flashy middle-aged stranger. Hanako tells her girlfriend Katori that the nervousness of her trying to force herself to apply to the company is causing her to lose her mental and physical balance. While telling him that she doesn't have to be useful to the company and that she should not lose her individuality, Hanako gently places him on the bed and takes her dick in her mouth.

Natsuko Hirashima is a beautiful doctor at a hospital where her husband, Goro, is the chairman. She also had a good reputation among patients. When she was on night duty, she also allowed relatives of hospitalized patients to stay overnight. However, the doctors and nurses were not aware that the surveillance cameras were installed there, claiming that she was there to monitor hospitalized patients 24 hours a day. The reason Natsuko allows her patient's relatives to stay the night is so that she can enjoy watching them secretly have sex on a monitor.

Aspiring scenario writer Yeon-hee uses the nickname Pink Band to write R-rated scenarios. She's famous for her far-out work. Her ideas come from her best friend Joo-yeong's sex experience. However, Yeon-hee herself is a virgin, so she dreams of a romantic and ecstatic first sex that is unlike her scenarios.