Can You Come to Save the World at the End of the World?

Resident Evil, World War, Alien Invasion... If one day the end comes, why would you save the world? Some people are duty-bound, some are righteous, some are just seeking to protect themselves, and some are risking their lives to save the common people, but only because of one person in the common people... Now, can you come and save the world at the end of the world? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.