Two Realms: from Miner Rat to Realm Devouring Demon Immortal

[Alien Beasts] [Fairy and Demon World] [Evolution] [Zombie Apocalypse] The Silver Dragon, who died tragically after being pushed into the corpse tide by his fiancée, is reborn! However, unlike the retrospective timeline in apocalyptic novels, the silver dragon was reborn in a world of immortal cultivation and became a little mouse in the spiritual enlightenment realm in the second level of the Nine-Level Demon Tower, the Forbidden Land of Death. Fortunately, the reborn ones are all lucky ones. The Silver Dragon also comes standard with a golden finger and a bloodline evolution panel, so there is hope for the future. "World Gate? The cooling time is two and a half days?" "Hey~ Could it be that... This thing can take me back?" "Urgent, urgent, urgent!!! It's urgent! Time, hurry up!" From then on, Silver Dragon started a life of cultivation in two worlds, pretending to be a grandson in the Nine-Layered Demon Tower, and building a force to dominate in the doomsday wasteland. Devouring evolution route: Iron-toothed rat → Gold-devouring rat... Final True Spirit·[? ? ? (Complete settings, solid structure, rigorous logic)