1girl, black_panties, breasts, brown_hair, daiko_(dai1974910), forehead, idolmaster, idolmaster_cinderella_girls, large_breasts, laundry, long_hair, looking_outside, matsunaga_ryo, no_pants, panties, rain, shirt, solo, straight_hair, thigh_gap, underwear, very_long_hair, wet, wet_clothes, wet_shirt, wet_towel, white_shirt