This was incredibly frustrating to watch; the plot was confusing, the characters were not well developed, and the episodes felt rushed. What I will say is that the vampire characters are definitely vampires in behaviour which was refreshing: they're consumed with bloodlust and incredibly sadistic (and also pretty kinky ngl). If you're into vampires and S&M sorts of relationships then this might be worth watching, but there is a lot of abuse and situations that have a very rapey feel to them.
The art is nice, all of the vampire boys are very pretty, and the opening theme has been stuck in my head for a day and a half, but I wouldn't recommend this anime.