Savior of Chaos World

I was forced to sleep for thousands of years just after I traveled through time. When I woke up, an old man called me the Holy Son, and a voice from space called me the savior. In the world after the destruction of the evil god, the train roars away, and the humans trapped in the city-state hope for the salvation of the supreme god. Walking towards the throne of the gods and towards the abyss of destruction, mankind needs the guidance of the savior.