1girl, b1ack_illust, black_bra, black_hair, bra, breasts, chestnut_mouth, cleavage, glasses, hair_between_eyes, holding, holding_removed_eyewear, idolmaster, idolmaster_million_live!, large_breasts, long_hair, panties, see-through, see-through_shirt, shirt, simple_background, solo, swimsuit, takayama_sayoko, underwear, unworn_eyewear, very_long_hair, wet, wet_clothes, wet_shirt, white_background