Pure(2009)

Asa Akira is Sada, an ex-hooker who takes a job at an L.A. fetish dungeon that services rich and powerful clients. A secret after-hours orgy leads Sada into an affair with the head-mistress’ husband and partner Kichi. The pair immerse themselves in their own sensual world, exploring kinks and fetishes that turn complex and dangerous – Sada develops a fondness for sharp objects, as well as choking Kichi during sex. Can the profound bond between the beleaguered lovers survive, or will their kinky fairy-tale romance climax on the darkest note possible?