While Mahiro, Yayoi, Karin, Karen and Yuko leave Nina all alone in charge of Shirakaba Dormitory for the winter break, Liones decides to stay and accompany Nina for New Year's Eve. In Nina's dorm room, Liones encourages Nina to snuggle up in a kotatsu while eating mandarin oranges. When the doorbell suddenly rings, Liones answers the door after losing a staring contest with Nina...