The only thing that keeps you watching is the constant unknown of who Yui really is and other mysteries throughout. And I enjoyed the art (except for Yui's hair, the ombre effect was a little odd).
I also was intrigued by how the brothers kept having flashbacks whenever Yui touched them or interacted with them in some way, but that kept ending in them drinking her blood. They even went as far as to try to make Ayato's seem romantic and started to show his last bit of humanity... before he drank her blood even though he knew she was drowning (but as soon as he kissed her she suddenly wasn't struggling for air anymore???).
The show had potential, truly, but it fell flat and I don't have much desire to go further. Of course, I still want to know who Yui is, who was the woman in the window, etc etc, but I feel like my time could be better spent. If they had drawn from the one moment of Ayato's humanity came through and continued playing on that, this really could have gone somewhere, but with where it's going now they're all manipulative, possessive, abusive animals who see Yui as a blood bag (and that's all the writers saw her as too, or so it seems). I wasn't expecting the vampires to be extremely kind to her like this was some Twilight remake, but I also wasn't expecting the entire show so far to be based around them getting off on her pain and that really be it for them (besides their pent up hatred). Just something to make it a bit more worthwhile to watch and less like I'm watching a potential rape scene every five minutes.
Also Laito's little nickname for Yui is so overused it's ridiculous. Use it once, fine, but he didn't need to use every single time he addressed her.
