I'm not familiar with the source material, but this one is a work of art. There is a point where the artist no longer needs to separate scenes by borders, and the pure unbridled tentacles contrast with the smooth shots of the bodies. Even though there was a main focused girl, all 5 of them got stunning attention and no scene is quite like the other.
This is a crazy tankoubon about forced yuri. Sometimes manipulative, sometimes straight rape. Sometimes they hook. Sometimes they both give in to the demonic power that was used to achieve sexual parity. Just another day (´∀`)
How they just swept it under the rug with sweatdrops EVERYWHERE!