The art, sound and direction is where the best part of the anime lies in and they are the ones that kept me going. The story is very simple and only bare minimum parts of the suspense are reveled occasionally, You'll understand everything only in the final episodes. The story's style is of darker tones but not dark enough to be psychological. It revolves around the concept of Vampires. There are various settings used from era of kings to distopia as the story progress, different settings are used to describe various points of the plot so its slow, but i was never that curious anyways because Kurozuka stays loyal only to theme of vampires and does a fantastic job at that and you should be watching this to get enchanted in that mood so even is there isn't much from the story and style of story telling, like i said before its a must try.
You can't really say that the characters lack in here because the characters nature has no business here. There's a beautiful looking Prince and an immortal and equally stunning looking vampire who fall in love with each other and these two vs the world. There are some anime that go deep into the characters when so little characters are of essence but that is not needed in here. However all the characters are coherent and comprehensible.
For me it wasn't enjoyment as much as checking out the concept that is of importance and Kurozuka satisfied my thirst for curiosity..
