People who enjoy kinky anime sans tentacles will love this one.
When one thinks of anime porn these days, one tends to think of tentacles and horny space monsters raping nubile young Japanese lotus-blossoms. You'll get none of that here.
Slaves to Passion is a timeless story of art, deception, incest, BDSM, vegetable abuse and love. It is tender, brutal, and sometimes quite funny. But there are no space monsters. Sorry.
What there is, however, is hot animated sex and bondage play. When pervy master painter Juichiro suddenly dies, his apprentice Kaoru puts down his brush and picks up the master's widow. Unfortunately, there's also the widow's jealous sister, a meddling doctor and the maid to contend with. They do, however, all get it on at one point or another, and the animation is done well enough that this can definitely be arousing to watch.