>>717173368
>>717173695
>>717173743
It has nothing to do with Fate, YOU MASSIVE RETARDS
It's the Innistrad narrative arc from Magic The Gathering, of which Miyazaki is a massive fan.
The Vampires that in MTG are planeswalkers, able to traverse multiple worlds at different times and places, the Vampire clans fighting over the Moonsilver key that are for or against the Astral conjunction of the Moon.