My Little Vampire

This is a world where humans and vampire have found something to co-exist: artificial blood. Still, it can't really be helped that people would be scared of vampires because of their dangerous nature. Meanwhile, a man who is tired of loneliness after the death of his lover decided to adopt a vampire child. Of course, he had needs, so he calls for sex service every night. What he didn't know is that the kid sees it, and because the kid drinks his blood, he is growing up too fast. Will the man be able to see this vampire as a grown man when he was just an adorable little child yesterday?