Vampires may be powerful and dangerous, but some of them are so charming, intelligent, and gorgeous that fans can't help but swoon over them. Beauty aside, some have wonderful qualities which make them desirable waifus, like bravery and the capacity for undying love. Vampires in general are highly romantic figures in literature, movies, and anime – crushing on them isn't anything new.
Source：https://www.cbr.com/vampire-anime-waifus/
