Jitsuroku furyô shôjo: Kan (1977)

Kan’s the star here — skinny Asian chick with long straight black hair, looks young but legal. First scene’s her on her back in a bedroom, legs wrapped around some average dude in his 30s. He’s not huge but fucks her hard, you can see the sheets bunching up every time he slams in. Camera’s right there from the side, so you get a good look at her face when she moans. Next part’s him kneeling in front of her on a couch, face buried in her pussy — she’s sitting up, gripping the cushions like she’s trying not to scream. Later there’s a threesome with a white girl who’s got long wavy dark hair and tats on her legs. They’re both all over this older balding guy at a kitchen table, one sucking his dick while the other makes out with him. Lighting’s dim but you can see everything, no shaky cam or weird angles. Good mix of solo, oral, and girl-on-girl.