1girl, aru_(blue_archive), birthday, birthday_cake, blue_archive, blurry, blurry_foreground, blush, brown_horns, cake, coat, coat_on_shoulders, confetti, covering_mouth, demon_girl, demon_horns, depth_of_field, food, fur-trimmed_coat, fur_trim, halo, happy_birthday, horns, koyo_akio, looking_at_viewer, neck_ribbon, pink_hair, ribbon, shirt, solo, straight_hair, sweatdrop, white_shirt