1boy, 1girl, black_footwear, black_hair, black_legwear, blonde_hair, boots, green_skirt, hair_ornament, hair_ribbon, long_hair, looking_up, lying, necktie, night, night_sky, on_back, outdoors, ribbon, sitting, skirt, sky, star_(sky), starry_sky, thigh_boots, thighhighs, two_side_up, uniform, zettai_ryouiki