Protagonist Kodama Yamabiko, ability to manipulate special voice "Kagekagura" descendant of whole family who has it. However, it doesn't agree with current heads who lost pride, it went out of the house.

To Yamabiko, a man and woman, it is an utopia to give the pleasure of highest each other, there was belief. Besides "Kagekagura" is used, Yamabiko that starts up activity to send pleasure to a lot of people. A certain day, such Yamabiko, a man who introduces himself as Onoue may do the scout. The name of the organization to which Onoue belongs, Japan pervert Association―― Japanese molester society. Data of the molester in various places is collected, it is said that the Secret Adversary gamble based on the result.

Spread of pleasure act that is purpose. In fact, for the sake of reality, it is useful in this organization. It becomes the molester of a top class, if the unrelated person is enlightened and the number of cooperators is increased, the more achievement is near. Yamabiko judged so gets on the invitation, the molester decided to act by JPA.