rei (rei's room), fujita kotone, juo sena, gakuen idolmaster, idolmaster, commentary request, highres, partial commentary, 1girl, blonde hair, blush, breasts, breath, character doll, doll, female masturbation, hand in panties, indoors, kneeling, large breasts, long hair, masturbation, navel, nipples, nose blush, panties, photo (object), purple eyes, pussy juice, side-tie panties, solo, stomach, sweat, topless female, underwear, very long hair