Adapted from the visual novel of the same name by Enterbrain. A second-year high school student feels uneasy during the Christmas season because of a past experience. However, this Christmas, he has his final opportunity to ask out Haruka Morishima, a graduating senior, or one of several other classmates. The anime's narrative is structured in an omnibus format, with each heroine receiving her own animated version of the story. Each heroine also performs her own version of the ending theme song.