After graduating from high school, Sota Koyurugi studies bakery at an institute. In high school, he fell in love with beautiful Saeko. Because of Sota's effort, he is able to have a romantic relationship with Saeko right before Christmas. Saeko though tells Sota that she will be unable to meet him on Valentine's Day, but can meet him on the day before Valentine's Day. On that day, Sota gives Saeko chocolate that he made, but she doesn't accept his gift. Saeko tells him that she didn't think they...