1boy, 1girl, airi_(robotics;notes), black_dress, black_ribbon, blue_jacket, closed_eyes, cowboy_shot, dress, frilled_sleeves, frills, green_pants, grey_hair, hair_ribbon, hand_in_another's_hair, happy_birthday, hood, hood_down, hoodie, ikuhashi_muiko, jacket, kiss, kissing_forehead, letterman_jacket, long_hair, long_sleeves, pants, parted_bangs, parted_lips, ponytail, red_hair, red_hoodie, ribbon, robotics;notes, short_hair, short_sleeves, smile, snowflakes, winter, yashio_kaito