User blog comment:Crimson Marauder/Origin of Vampires???/@comment-25942629-20151218150038/@comment-27221428-20151228153935

I agree. Any historical figure or mythology must be completely unrelated or unneccesary for advancement of the story. He probably just drew influence from Vampires being immortal bloodsuckers. I hear the original ending is making its way to the manga in some form but not as an ending (obviously).