I Was Reincarnated into a Different World and Became the Strongest True Ancestor

On the ancient continent, there existed a powerful true ancestor of vampires, Namiius Raetia, the strongest being in history. Created an unheard-of country, the Sorcerous Kingdom of Raetia The people here live happier than ever under the rule of the True Ancestor. Until one day the world broke apart, and he was defeated and sacrificed in a moment of fighting against the invaders. His soul remained intact and he became the next reincarnation of human beings, "I am called the strongest true ancestor".