As someone who is automatically biased because I dislike vampire related animes as I feel most follow the same story types or tropes and I feel like they're bland but I still gave this one a shot.
I'd say overall it's "watchable if nothing left is on" but it's not something I'd say you should go out and watch. Decent art style with a decent budget but 70% of the characters either have no story, don't talk, and haven't said there names enough for me to even remember anyones name. I don't even think I remember the main characters name. Forgettable but not god awful.