"I won't be able to see you for about a month." That's what her boyfriend Hibiki told her, around the time summer break started. Yuki was frustrated that he wouldn't even tell her why, but finally, the day came when she could see Hibiki again. They agreed to meet at the usual station, at the usual spot. As Yuki was thinking about how summer break was almost over and they needed to make some good memories, a beautiful girl she didn't know approached her.