[Nefarious]

It is funny, because I have read a lot about how it came to be. Apparently the artist had stuff in the manga/anime that wasn't too kid friendly (ie. rape) and had to be cut. The gender-switching seems like something that would happen in a ecchi/hentai series. Hopefully it won't go overboard.

Spoiler:

After the tentacle scene and end of the series, does it really surprise you?

I hope it goes a little overboard.