Doomsday World, Monsters and Behemoths Are Rampant

Traveling through time to the end of the world, I saw a giant beast that destroyed everything around it with one strike, and also saw a monster that could change in ever-changing ways. There are also mechas and superpowers among humans. These are real. Behemoths, humans, and monsters seem to be trapped on the earth. The earth is like a large slaughterhouse and experimental site for people at high latitudes to watch. They call themselves gods. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.