I think you can tell I didn't like this :) I watched only 1 episode before giving up so my review is going to be based only on that.

Actors doing the teenagers are overacting every scene, it is really painful to watch. I am not expecting Oscar worthy performances but every time they are in scene, they display one emotion in a very exaggerated manner. There are several scenes where the girls push each other against the wall and getting into each other faces. Considering that this was the first episode and that they just met I found this quite weird. I assume this is what director wanted. I just don't find this style of TV show appealing. Scenario is interesting as an idea, this is sort of 21st century take on Frankenstein/another take on zombie genre. It also shows understanding of how teenagers behave, but due to all exaggerations I found it difficult to watch. If it was a graphic novel, I would have found it enjoyable. That is why I am giving it 4 stars.

In terms of horror, this is a different style of horror than the one I am used to. I noticed it in some other Japanese horror movies: no suspenseful music, or any added camera suspense. The horror that is happening is clearly showed, not much left to imagination.

It is not all as bad as I make it sound, I managed to watch the entire episode before giving up. For example, I couldn't watch a whole episode of The Rain due to being annoyed with the script... At least here, the script is interesting.