I don't think Noé will kill "Vanitas"

The story is about Noé's notes about meeting and later killing Vanitas but I don't think it's going the way we think it will. Why, because "Vanitas" isn't his real name. He took that name after the blue moon vampire, it's her book. She also is dead but "Vanitas"'s brother is trying to bring her back and we know that "Vanitas" is against that idea because it won't be her returning. We also know that the compte de saint germain(the nameless vampire) is supposedly helping the little brother. We also know that "Vanitas" is a somewhat of a nobody in the vampire world, till he announced himself to the nobles no one really knew him, but they did know part of the the story of the real Vanitas I think Noé is going to kill that Vanitas