After her parents died, Konno Azusa inherits her parent's inn. All the residents in the inn left aside from one perverted guest, so she gets to fulfill his every would like to prevent him from leaving as well.

Shuji lives a peaceful life regarding his younger sister, Saki. But he secretly loves her with his fantastic libido gets uncontrollable everyday. Eventually, Saki tells him, "I enjoy you.... I've been always thinking of you since i have would have been a kid...." This way, they become boyfriend/girlfriend. However, their happiness is destroyed by a message. "I am aware your everything...." The e-mail attaches a picture of Saki changing clothes