ruuuuuuuryyyyyy, kurosaki chitose, idolmaster, idolmaster cinderella girls, 1boy, 1girl, arm around neck, black hair, blonde hair, blush, breast press, breasts, closed eyes, completely nude, faceless, faceless male, from side, hair bun, hand on another's head, hetero, huge breasts, kiss, leg lock, night, night sky, nude, onsen, partially submerged, raised inner eyebrows, saliva, sex, short hair, sky, steam, straddling, underwater sex, upright straddle, water, wet