Transmigration of a Returnee in The Novel's Extra

Lets Follow Yu Jin. Who before the Earth cataclysm and the transportation of its residents is about to be hit by a truck when he sees a girl and tried to save her, who suddenly run towards him. luckily he got transported before it happens and didn't learned about the trial period of the residents of Earth. due to some unexpected problem that happens during his transportation and the place he got transported to. This is a Fan-fic. The story might be slow or the update since I'm writing this while re reading the novels. Also this is my first time writing so be lenient with me.