Sukeban: Niku dorei (1987)

One of the Asian girls has long straight hair, wearing tight jeans and a cropped top, bending over a concrete ledge in an industrial-looking room. The black woman, tall with short hair, goes down on her first, licking her pussy from behind while the other Asian girl kneels in front, getting her tits sucked. They switch — the second Asian girl takes a turn in doggy, spreading wide as the black woman eats her out and fingers her hard. Camera stays close during oral, focusing on lips and fingers moving, with dim ambient light giving it a raw, unfiltered vibe. Later they all end up on the floor, two of them grinding face-to-face while the third jerks off watching. No talking, just moans and wet sounds, feels spontaneous, not staged.