Instead of starting a career after graduating from graduate school, Satoshi decided to start working part-time at his local convenience store. It hasn’t been so bad since Hibiki, his cute young senior co-worker, has been keeping him company during his long work days. To celebrate Satoshi’s one year anniversary, Hibiki invites him over to her apartment. The invite came out of the blue, but it certainly was welcome. But once he arrives at Hibiki’s place, Satoshi realizes he might be getting more than he bargained for.