Okasu! (1976)

Starts with a skinny Asian girl in her early 20s—long wavy black hair, small tits, but she knows how to work the camera. First she’s in a dark room, fingers playing with her top, cleavage peeking out. Then she’s on a rooftop in a low-cut red shirt, sunlight hitting her collarbone while she adjusts the fabric. Next shot she’s lying on a bed, legs slightly open, hands near her panties, letting you see everything in dim light. Best part: she teams up with a muscular guy—shirtless, dark hair, maybe mixed—who bends her over and fucks her from behind. You get a solid side angle of his hands gripping her hips while she arches her back. Last bit she’s in front of a mirror, hair half-tied, touching herself, giving that soft-core vibe but with enough detail to make it worth it.