Anime review: "Blood Lad" (AVERAGE)

Series in one sentence:
Twilight done slightly better, but not much.

Series in more sentences:
A teenage vampiric mob boss with an obsession for humans and human merchandise gets notified a real human being is walking around lost in the demon world, thus captures her right away. But the girl ends up getting killed not long after their meeting and turns into a living ghost thanks to the demon world's influence. The vampire decides to help her find a way to become alive again.

The first episode was promising, but the moment the girl died, the vampire's interest in her died, and my excitement with it. Her death turned him insultingly indifferent. I understand the reason given for it, but it doesn't make the relationship between these two entertaining, by any means.

The reason why the vampire, Staz, wanted to bring her back to life was confusing and the series refused to give an explanation. Did he help out because he planned to eat her, or did he honestly grow fond of her? If the latter, I didn't feel it.
Even the girl announced not to know what to do with the guy when she comes back to life, and if both characters have this lacklustre mentality, what's the viewer supposed to think? Do we want these characters to be together? I stopped rooting for them after the girl died, since we only had Staz to push this relationship forward, and he lost all care. The girl pretty much never showed interest in him to begin with.

These characters don't even do anything with each other when they're together, they're always interacting or responding to other characters. Staz laments to himself a few times, but it's never about how badly he wants to marry his short-lived crush. Having all of this said, don't expect any romantic scenes with these two. You only get it from this other character who's lusting after the girl and another one going after Staz, but this asexual vampire acts equally nonchalant around her.

I don't understand what the series tried to accomplish or what story it wanted to tell.

The ending was a let-down and felt like the beginning of a second season that never came. If the manga has more to offer, why are animators wasting their time making these half-finished TV shows?
I'm disappointed that Blood Lad didn't have much to offer in the end. Staz seemed like a cool character.