Shiki:
Not sure if I should watch anone or Unnatural. Both are by brilliant screenwriters with a solid cast.
I watched episode 1 of both. I found Unnatural boring, because of the clichés (like the examiners laughing right before doing an autopsy or eating a lot just after). But I like the supporting actors, and I'm gonna give a chance to episode 2, then decide if I continue with this drama or not.
As for anone, it was exactly what I was expecting for. Like Quartet, it's difficult to classify it in a particular genre, but that's what I like about the screenwriter, his ability to disconcert the viewer. The story seems to be between Quartet and Soredemo ikiteyuku.
I hope that helps to make your choice.