serebi ryousangata, producer (idolmaster), shibuya rin, idolmaster, idolmaster cinderella girls, 1boy, 1girl, black cardigan, blush, breasts, brown background, cardigan, clenched teeth, grabbing another's breast, green eyes, groping, hetero, jewelry, large breasts, long hair, looking at another, navel, necklace, nipples, open collar, school uniform, shirt, solo focus, standing, straight hair, teeth, upper body, very long hair, white shirt