The Last Safe Zone

When the sky fractures like glass and the System descends, every city on Earth becomes a hunting ground. Monsters pour from subway tunnels, office towers turn into dungeons, and glowing blue walls rise around scattered Safe Zones that promise protection—for a price. In the ruins of Chicago, Marcus Vale, a disgraced paramedic haunted by the patients he failed to save, awakens with a forbidden class no one else can see: Gravebound Warden.