Leveling up from scratch novel

I am about 40 years old , although 27 by earth standards. My name is Su Hyuk .

In the land of Hwang, I was the best warrior, skilled in magic and battle.

But due to circumstances, I had to urgently return to my native Earth .

True, I had to use a forbidden ritual that was performed by a slave… but that was not the point. Because of thas idiot, I was in the hospital for five whole years .

A lot had changed in that time.

It turns out that people now travel through dimensions through mysterious portals, which are simply swarming with all sorts of creatures. In connection with this, two new professions have appeared: Defenders and Hunters.

Hunters are paid much more, but you have to risk your precious life every day. So, what do you think I am now?