Antiporno

Kyōko (Ami Tomite) is a renowned artist and writer trapped in a solitary gilded cage of her own success where she speaks to the phantom memory of her dead sister Noriko (Mariko Tsutsui). Her assistant Noriko arrives to help her prepare to be interviewed by a prominent lifestyle magazine. Wrestling with nausea and self-doubt, she alleviates her insecurities by subjecting her older assistant to a series of ritual humiliations in front of the others. A director yells "Cut!" and it is revealed that the two women were playing parts in a pornographic film. Noriko unveils herself as a prima donna who is frustrated with the fledgling actress Kyōko's amateurish ineptitude and subjects her to humiliations mirroring those in the scripted scene. The layers of the two actresses' true personalities and Kyōko's background are revealed over the course of repeated performances of the scene. Read more on Wikipedia.