Borboletas e Garanhoes (1985)

Girl with long black hair and slim Asian frame is dancing naked on the couch, lit low — you see every curve as she moves. Black guy with a thick build and bare muscular chest joins her, no warm-up, just straight to fucking. They go at it hard — doggy style against the back of the couch, then she rides him facing away, grinding deep. He flips her onto her back for missionary, face close, then makes her suck his dick before finishing on her chest. Camera stays wide but gets tight on the action during oral and thrusting. No fluff, just raw fucking in a lived-in space with natural lighting through a window behind them.