Based on the visual novel by Waffle. Sanjou Maki is the girl living next door to Sakonji Seiichi. She appears to be well-bred, gifted with both beauty and brains. However, one night, Seiichi sees her masturbating on the veranda… Maki easily admits that she’s a dirty girl and jokingly suggests to Seiichi that she should be blackmailed into being his sex-slave.

Shin belongs to a cheer group. Though he wasn’t interested in it, Yuko, his older sister, forced him to join it…. As a matter of fact, there are only two members, Shin and Yuko. On the other hand, a cheerleading club has a lot of members. One day, Shin accidentally collides with Chieru, a member of the cheerleading club, and she gets injured…. In compensation for her injury, he decides to work as a caretaker of the cheerleading club. But days later, Satsuki, a coach of the cheerleading club, suddenly orders the members, “You should give him a titjob to overcome your sense of shame!” As they are all confused, Satsuki starts giving Shin a titjob…!

Sent to convince four beautiful young heiresses to relinquish all claims to their father’s fortune, our protagonist has to use his sexual prowess to win them over and accomplish his hidden agenda.