The story takes place in a small town surrounded by the mountains where, every winter, a "Love Letter Festival" takes place. According to the legend, if you write a love letter to the one you love, and post it at the local shrine on the 26th of December, you will get to meet that person.

The protagonist, Makoto Akizuki, was born in that town and has been living in Tokyo for the last 3 years. He pays a yearly visit to his relatives, this time accompanied with his a junior at school, Hakana Fuyutsuta.