In Return For

I accidentally entered another world by accident. Because I accidentally entered another world, I escaped. When I returned to the human world, earth-shaking changes had taken place. The world was in chaos, mutants could be seen everywhere, super viruses were spreading, etc... When I learned the truth about all this, I was very angry. For the sake of my world, Uncle Sam, let's duel! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.