Vampires may be one of the most popular supernatural creatures in horror and anime in general, but they're not known for their noble nature. Many are immortal and their strength plus the endless years passing tends to make them apathetic, even misanthropic. Eternity and watching generations pass may fascinate and humble some, but others find it monotonous, and it brings out the worst in them.
Source:https://www.cbr.com/honorable-anime-vampires/