Hey! What Kind of Immortal Heroics Is This?!

What if the world of the Classic of Mountains and Seas had never vanished, but had split into completely independent parallel spaces in ancient times? After thousands of years of history passed in the same way, what kind of civilization would have developed in that world? In 2120, the world was becoming increasingly beset by misfortune, while humanity made significant advances in spatial exploration. I was an ordinary office worker, but after taking part in an applied physics experiment, I accidentally entered the mysterious Desolate Sea world and began a journey of civilizational exploration...

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.