2girls :d aijou_karen animal_costume animal_ears antlers blue_hair brown_eyes brown_hair commentary deer_tail fur halterneck hat heart holding_hands long_hair looking_at_another lying multiple_girls on_back open_mouth reindeer_antlers reindeer_costume santa_hat short_hair shoujo_kageki_revue_starlight smile tail traditional_media tsuyuzaki_mahiru two_side_up umanosuke yuri