With her jet-black hair, sinister smile and silent demeanor, Sawako "Sadako" Kuronuma always had trouble fitting in. But her whole life changes when she befriends the most popular boy in class, Shota Kazehaya. Can love trump her cursed life?

After an eventful Christmas with her classmates, Sawako is super excited when Chizu and Ayane invite her to come with them to the shrine on New Year's Eve, which happens to be her birthday. But what she doesn't count on is her friends' birthday surprise--to get her to go alone with Kazehaya-kun!