Do you remember me? Or are you someone else?

Somewhere in my head, alarm bells are ringing. I shouldn't get any nearer to this person. Misato Akatsuki takes some time to visit her parents in the middle of looking for a new job. She discovers a letter in the drawer at her parents' house, which tends to get packed with mail. That letter was from her friend in high school, Satoshi Tsuruhami. There was no return address, so Misato grows depressed at the idea of their relationship falling to pieces, but she discovers where he is through the stamp's design and postmark...