An office worker who happens to end up helping a yakuza

It is difficult to stand out at a Ginza club where every hostess wants to be number one. It is competitive. One of them is a virgin and also just eighteen years old. She wants to become the number one hostess to help pay the bills for her family. She advertises herself as 'virginity for sale.' It is an auction and the prize goes to the highest bidder. She doesn't have hostess skills however. The club's manager was the number one hostess in all of Ginza and helps the younger woman.

#53 in the series, following "Agent of Darkness"

Harumi is sexually deprived and given the cold shoulder treatment by her husband and is also being harassed by her mother-in-law because she was diagnosed as infertile by a doctor. One day, she is seduced by Kazama, her gym instructor. She can't control the hot flashes of her body and accepts the desires of a young man. But a few weeks later, she finds out that she is pregnant. But isn't she supposed to be infertile? Or is there a conspiracy between the doctor who declared her as such and her husband and mother-in-law? And when she learns the truth, something breaks inside Harumi...