The Immortal Heretic and the Calamity Dragon Princess

Thor, who has a purpose, is accompanied by the Calamity Dragon Princess and a girl from a ruined nation. In unfamiliar lands, he encounters new cultures, companions, betrayals, and the keys to the world... This is an Isekai fantasy where he travels the world, relying on his immortal body to overcome the troubles that attack one after another. The day that Thor... who hates this world can return to his original world is―