Doukyo Suru Neneki

Slime girl that can transform into different girls.

If you screamed "YES!!!" to that. Watch this without hesitation. If that's not enough continue....
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HUGE SPOILERS!!
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... STOPP!!!!!! Omg, don't watch this if you intend to get off. Holy shit something is super fucked up about this hentai.
That slime girl.... I do not trust her one bit. Idk what the fuck she is doing, but I don't like it. There are multiple segments
in this hentai that feel like a horror anime. Maybe it's because I'm a little bitch, but I'm very uncomfortable with what I just
watched. The entire thing is just creepy. It's hard to enjoy any hentai scenes because you can't stop thinking about wtf you
just saw. Highly recommend watching it just to experience it. Sorry if this review is ass, I just finished watching it and can't
get over how unnerving it all was.

Overall this is a relatively faithful adaptation of the original in terms of content covered; however, the added content may take away from the setting instead of adding to it.

While I liked the original manga quite a bit. I think that the adaptation is a mixed bag with low quality animation and added and reordered scenes placed for shock value. I think that this emphasis for shock value generally takes away from the original work which had the horror elements pretty subtle until the third or fourth chapter and from there on out the horror aspect is generally downplayed whereas in the adaptation the ... horror aspect is shoved right in the viewers face very early and often. That being said, the studio seems to be taking an interesting direction on the horror elements starting from the second episode and I want to see where they take it.

Not your typical Hentai.

This is a story of an unsettling blossoming inter-species romance between an average guy who, while working at a convenience store, begins an ersatz relationship with a coworker who he quickly finds out is a shape-shifting slime.

There are many horror element to the story, as the viewer is shown how the slime gains sentience and the ability to mimic people by assimilating (merging with and devouring) them. There are also some bizarre, non-sequitur creepy vignettes sprinkled throughout.

The animation quality isn’t great, but in terms of hentai plot and eroticism, if one is looking for a WTF watch, then this is sure ... to leave the viewer scratching their head, if not itch.