I see your point but then the whole prophecy would not make any sense anymore since the whole point of the human of death and moon is to get rid of the original/ first vampire (which is ver) so it's about who gets to have ken/ cain first that wins. if ver was the human of death then how would he die when getting together with cain and why would he even try to get him? That does not make any sense
In the story Agia thinks that Ken’s/Cain’s friend (with black hair) is the human of the night/death.
that wouldn’t make sense, Ver is supposedly the first vampire ever therefore making him the one who killed the moon god which means he isn’t he death god or the moon god
I got a feeling that Agia isn't the "Human of Death" (Ken is the "Human of Moon"). I think its Ver. Vampires somewhat represent death.so i think he is the real partner of Ken