After reviewing several anime, this is something much more adult. If we consider the Be My Slave trilogy movie adaptation from the popular Japanese erotic novel to be adult, then it makes Fifty Shades of Grey like a schoolgirl Cinderella fantasy. Comparing the two sets of movies, it is clear the latter is merely a fantasy of marrying a good-looking and rich man who demands unusual sex. Be My Slave trilogy is comparatively much more pure in its pursuit of SM sex as a form of life fulfillment.
Be My Slave (2012) (Blu-ray release 2013-3-15) – the protagonist is interested in his coworker, who agrees to have sex with him but insists he must film her while having sex. She turns out to be a voluntary sex slave of another man, who is a master in turning women into his slaves. As ridiculous as this may sound, the way I understand it, the characters find their routine work life to be boring, and consider this SM master/slave relationship to be a form of freedom in unleashing their sexual desires and thereby becoming “beautiful”. The ending matches the title literally, so I think it is a proper ending. I do not think there is much plot in it though.
Be My Master (2018) (Blu-ray release 2019-2-1) is a new story with new characters. The new protagonist has sex with a married woman. He is then contacted by the husband of her, who threatens him to continue having a sexual relationship with her and heightening her sexual awareness, while regularly reporting the progress via text and photos. He becomes obsessed with her and ignores his own fiancee. The ending is a nice twist that is not the same as but still parallels the first movie in a consistent manner. I think I can comprehend this installment more than the first one, and the mystery keeps me interested.
Up to You (2018) (Blu-ray release 2019-2-1) continues from the second movie, and starts at the scene where it previously ended. The protagonist salvaged his marriage, is now a skillful master and hangs out at a bar with other people with interests in SM. He quickly loses interests in his new slave, and finds another. Things go well for a period of time, but is he satisfied? That is the core question that is examined in this movie. It is contrasted by the growth of the supporting characters at the bar.