1girl, 39, ahoge, anniversary, aqua eyes, aqua hair, aqua nails, aqua necktie, armpits, balloon, birthday, black skirt, black sleeves, black thighhighs, detached sleeves, grey shirt, hair ornament, heart balloon, holding, holding balloon, long hair, necktie, pleated skirt, shirt, skirt, sleeveless, sleeveless shirt, solo, star balloon, thighhighs, twintails, very long hair