Terao Chigusa is timid, overly-apologetic, and is so non-confrontational that she can't even correct others who call her by the wrong name. Terao has a crush on Katou-sempai, works at the library, and especially love the tale of ‘Dear, Mr. Nameless' - a story in which a girl finds a letter addressed to her in a book. One day Terao opens a book, only to find a letter inside just like in her favorite story! Who is Terao's own ‘Mr. Nameless?'
Love is an unpredictable thing, which is portrayed in both these series; Ai Girl being of the love shared between student and teacher and Haikei, Nanashi-sama showing a girl fall in love with an anonymous pen pal. Both series show sweet aspects of falling in love and a fan of either should love both.
The year she turned sixteen, a girl had sex with a stranger that she met on a singles chat line. She doesn't remember much about him except that he was nondescript, and she hasn't been with anyone since. While chatting with a friend, however, she discovers something about the man that leaves her terrified...
Both series are incredibly short, being one shots, and both deal with awkward romance. System of Romance deals with a girl realizing she had fallen in love with a dangerous felon, and Haikei, Nanashi-sama dealing with a girl sending sweet messages to an anonymous admirer. Both series deal with odd, round-about, but somewhat sweet methods to falling in love.