Career Traversal System

What would you do if one day you lost everything? I will hold on to my still beating heart. With hope in your heart, stand in the cold wind and look into the darkness; with courage in your hand, you can fight to the death in desperate situations. The first world: The Great Wall of Despair in the Middle Ages The second world: fog survival shelter The third world: undercurrent of crazy technology . . . The protagonist is not the savior! The world doesn't need a savior either! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.