Mayu Mitsui

Karin, a sex detective, and Nana, an assistant, have protected the peace of Shimbashi based in a Chinese-style oil beauty salon. In the city, a mysterious incident occurs in which women disappear one after another, but Karin is not so absorbed in having sex with the New York Police Department Kasumi. Nana aims to solve the case with a newcomer China Girl Hachi and pseudo-sex detectives who are a reserve army of sex detectives. As the investigation continues, the shadow of a male office worker who is envious of his female boss, as well as the super-male and female criminal association ADAM, begins to flicker.

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.

母の再婚を機に、血のつながらない兄・夕哉とひとつ屋根の下で暮らすことになった神前美月。ある日、美月の前に自分を幽霊だという謎の少女・日和が現れて、彼女に憑依された上に下半身に貞操帯をはめられる。日和を成仏させ、貞操帯を取り外すためには、彼女が憧れていたという夕哉と恋仲にならなければいけないと知った美月。嫌がる彼女だったが、夕哉を狙っている女性が登場したのをきっかけに、自分でも思いも寄らなかった気持ちの変化を感じ取っていく。