Stuck in a dream world

On one of the most ordinary days, after a bad dream, as well as after going to the store for food, incomprehensible holes began to form around the main character named Nid, which brought him into the world that he had already met. This is the world from the dream that he had the night before the incident. But, it turns out he is in the body of a young man who no longer exists in that world. Will the main character manage to get out of this world? Or would he prefer to stay in it?