One day, Wonwoo became an awakened guide known as the 'Purifier'; an existence with great power that not only allows for guiding beyond grades, but can also steal the power of espers.
And so, in Wonwoo's world, espers and Purificationists were mutually hostile, and an endless war between espers broke out. Wonwoo, who lost all his comrades who were fighting alongside him, was alone.

One day. Facing the thick fog, Wonwoo encounters his dying self beyond it. The request received from oneself in another world is to "live in their place here."
"I'm glad. It's a life I've messed up, but you'll be able to endure it well."
Accepting this, Wonwoo crosses over to that world and becomes another 'Ji Wonwoo'...

"Everyone is alive."
Surprisingly, in this world, all the comrades who had died were alive.
Wonwoo goes to find them and helps using his abilities, and in the process, he encounters the ruler of the North, 'Gye-yoon'.
"It's because of those eyes. Because of those eyes that look just like them."
However, strangely enough, every time he sees him, someone comes to mind...