The world after the protagonist returns from time travel. It is peaceful on the surface, but as the aura quietly revived in the past ten years, various urban legends, monsters and ghosts began to materialize. Special incident handling departments (such as the "Dragon Shield Bureau") came into being, but their capabilities were limited and they were overwhelmed.
Another world (Azeria) is a classic high-magic world of swords and magic. The protagonist has spent a long time here (it feels like hundreds of years, because time flows at different speeds). He has fought back from being a bullied "ugly monster from another world", and finally killed the demon god, pacified the abyss, and was revered as the "Immortal King" by all races.
