"I tried to become a vampire by trying to fall in love with one but the vampire fell for me instead!"
Now, on a serious note. I'm worried about Kou-kun's bff. Does this mean that he or any of the other vampires have to make her fall for 'em in order of her not to die? I mean, it's a matter of time that her knowing about vampires will come to bite both of our MC asses.