My job is not going well and I recently returned to my parents' house, helping out at my grandfather's old bookstore. The countryside is not interesting and just wastes my time, but I recently found some fun. It is playing pranks on Mugi-kun, who often comes to this deserted old bookstore. The mysterious relationship with Mugi-kun who gets an erection and ejaculates after a little stimulation during a service. In fact, Mugi-kun's sexual processing is an excuse and I just want to feel comfortable.