Sougetsu no Kyuuketsuki Vanitas

Born under the legendary Blue Moon, this vampire is widely believed to be the architect behind the catastrophic Malnomen disease and the mysterious Book of Vanitas. Driven by a deep-seated desire for vengeance against a lifetime of persecution, they sought to eradicate vampirekind by corrupting their True Names. This dark legacy is prophesied to descend upon their descendants, ultimately signaling the total downfall of all vampires.