Nikutai hanzai kaigan: Piranha no mure (1973)

Starts with a skinny Asian girl on her back, head tilted, sucking off a Black dude with a toned build. She’s got long straight hair covering half her face and a tattoo sleeve on her arm—good close-ups of her gagging on his cock. Then it switches to a bathroom where a curvy White chick with wavy brown hair is grinding on a muscular guy from behind, kissing his neck while he grips her tits. The group scene is where it gets chaotic: five people—two guys, three girls—messing around on plastic chairs, passing drinks, and feeling each other up. One of the girls has a belly button piercing and feeds a guy fruit before they start making out. The money shot is a brunette with big tits on her knees, blowing one guy while another jerks off next to her. Camera work is solid—close-ups on faces during oral, wide shots for the group stuff. Lighting’s dim and moody, especially in the bedroom scenes, which gives it a dirty feel.