Office Lady Rope Slave 1981

Asian Erotica From Japan
Non-Pinku + Pinku eiga

Pink film (Pinku eiga or Pink eiga or Roman Porno) in its broadest sense includes almost any Japanese theatrical film that includes nudity (hence 'pink') or deals with sex. This encompasses everything from dramas to action thrillers and exploitation film features. (source: wikipedia)
Pinku Eiga (also known as Roman Porno)