Pure(2009)

Pure is an adult drama following Sada, an ex-sex worker who lands a job at an exclusive Los Angeles fetish dungeon catering to wealthy clientele. When a secret after-hours orgy ignites an affair between Sada and Kichi, the dungeon's co-owner, the two spiral into an increasingly dangerous sexual relationship. Their exploration of extreme kinks—including knife play and asphyxiation—blurs the line between intimacy and harm. As their bond deepens, Sada and Kichi must confront whether their transgressive passion can survive the darkness they've invited into their lives, or whether their obsession will consume them both.