I'm Just a Traveler

Single Female ProtagonistUrban Superpower Lin Shen was involved in the world of supernatural powers on a rainy night, and a mysterious mark appeared on his left shoulder. In order to save his seriously ill sister, he was forced to take on the task of eradicating the alienated monsters, and gradually discovered that he was the only successful subject of the experiment thirty years ago. Forces from all sides have appeared one after another to seize the "Key to the Door", and the "door" deep underground that connects to other worlds is awakening.