Escaping the Maze

My name is Aris. I wake up in a mysterious place surrounded by a maze. A bunch of girls live here, I'm the only boy. The girls survive, without memories, without recollection of their past lives. We have to get out of the maze, somehow. I wake up here the same, no memories, I can't remember anything. The maze changes every night, these monsters called grievers roam the maze at night, you don't want to be caught out there. I live in the glade, the only place safe from the grievers at night. We need to escape this maze, but how?