Mai Kuroki

Rinko inherits her parents’ public bath after they pass away. She starts to manage the business with the help of an old and experienced worker, Mr. Tame. However, she soon realizes traditional public bath are no longer marketable in this new century. Rinko thinks of a "Bikini Body Wash Service" to attract more customers.

Kayoko lives with her husband and daughter. One day, after stepping out of the shower, she finds a man wearing a balaclava in the room. They soon engage in a wild sexual encounter; the man turns out to be the son of Yoko, a married woman living next door.