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?’

While working as a monitor in the all-but-abandoned school library, first year Mei finds herself captivated by a mysterious boy with hair the colour of the setting sun. Never expecting to see him again, she’s surprised when he shows up the next day, only to fall asleep and end up rushing out of the library suddenly and without a word… Who is he, and where does he go at the same time each day?

Mugi has a fascination with mermaids. He moved in from Tokyo when his sister got married to a local man, and doesn’t quite fit in. On the day he met the girl, Madori, she was just coming to terms with her new family situation. His thoughtful gesture made her view him as her Prince Charming.