Chisato, a beautiful proprietress, runs a great-class inn with a great threshold. On the surface, it is an inn, but in reality, it is a brothel where one can perform sex acts with the beautiful proprietress. Although the inn is basically closed to first-time customers, men who have heard rumors about Senri arrive without a pause. However, Senri does not refuse even the first-time customers. The only thing that she has to decide is whether or not a man's penis is worthy of Chisato's attention....