The Shûchishin (1986)

One of the girls has long black hair and a slim body — she’s on her knees sucking the guy while the other girl, also slim with short black hair, watches and jerks him off. They switch spots quick, no big buildup, just straight into sucking and grinding. The guy fucks the long-haired girl from behind near the vending machines, her hands pressed against the glass while the other girl plays with her own pussy nearby. Camera stays wide for group shots, then tight close-ups during oral and pussy rubbing. Lighting’s dim, feels like late night, no one else around but you keep expecting someone to walk by. The whole thing’s raw, no talking, just moans and skin sounds.