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 the Christmas party, Kazehaya finally kisses Sawako! But a kiss is not enough, and Sawako asks permission from her parents to stay out late with Kazehaya... Then, Sawako's friends dish the details of their own very special Christmas Eves when everyone converges at her house for an impromptu party.