1girl, alternate_breast_size, alternate_costume, black_bra, black_panties, blush, bra, breasts, brown_eyes, brown_hair, cleavage, collarbone, futami_mami, heart, huge_breasts, idolmaster, idolmaster_(classic), kumako_(kumakonoh), licking_lips, long_hair, navel, panties, side_ponytail, solo, stomach, strap_gap, tongue, tongue_out, underwear, yellow_background