The onanie: Kairaku chôkyô-hen (1986)

This one’s got a solo Asian girl with long black hair, looks like she’s in her 20s, and she’s doing her thing in what appears to be a traditional Japanese setting – tatami mat, shoji screens, the works. She’s slim, not super curvy, but her hair’s pretty long and it’s a nice contrast to the dark room. The camera’s mostly close-up, shows her touching herself, then later lying down on what looks like a bed. Not much else going on here, just some straightforward onanie action. The lighting’s pretty natural, adds to the vibe.