You'll think that it will be a struggle for a vampire to be a doctor, let alone a sergeant. And yet, in blood, most of the doctors working in the hospital are vampires. Okay, they are not called vampires, but the infected by an uncured various that has similar effects just like a vampire. Even though its twenty episodes long, the plot don't let the drama get boring and keeps the interest high even till the very end. The blood scenes were a little too much, but bearable, though the romance was mild. The hospital politics and that villain doctor and his plots were very entertaining. However, I really didn't like the ending, as it was confusing, because of the very last scene. So, 6 out of 10.