[Machine Translation] Haruto is nominated by Soichiro Tomi to be the fiance of Kotone, Rei's half-sister. Kotone is enthusiastic and plans to announce their engagement at the Toomi family Christmas party. Rei, who wants to prevent this and spend Christmas alone with Haruto, further strengthens her approach with gezen dates and kneecappings! She also confronts the history of the Toomi family, which she has turned away from, while her cousin Ameon, who has kept her feelings for Haruto deep in her heart as a family member, can no longer suppress them! A Christmas full of turmoil begins, with each person's feelings intersecting!