Fumetsu no Anata e Season 3

Hundreds of years after the battle of Renril, Fushi awakens in a modern world he helped create during his long dormancy. Cities are safe, technology has advanced, and the Nokkers no longer appear to be the obvious threat they once were. Fushi begins reviving old friends so they can finally experience the peaceful age they fought to make possible.

He meets Yuuki Aoki and his family, then Mizuha, a descendant of the Guardians whose intense attachment to Fushi resembles that of her ancestors. Strange events begin following her, revealing that the Nokkers did not simply disappear; they learned new ways to exist inside ordinary society. For the first time, Fushi faces an enemy that cannot be easily recognized in a world he desperately does not want to destroy in order to save.