Yomi no Tsugai

There is a legend: the twins born when night and day are equal will bring about the apocalypse. Yuru and Asa are twins born at exactly that moment. Yuru helps the village by hunting, while Asa is kept locked away. One day the village is attacked, and one of the attackers declares, "I am the real Asa," and kills the Asa who was locked up. Yuru is spirited out of the village before the real Asa can catch him. The place they flee to is a present-day city, unlike anything Yuru has ever seen. As he tries to work out who the real Asa is, he must also adapt to this strange new world he knows nothing about. Auto-translated from Turkish