Isekai

One day, a mysterious tower suddenly appeared in the city. The people decided to call it a dungeon, and while it was full of rugged terrain and dangerous monsters, it was also a land of opportunity, where countless treasures awaited. When Sejun, a yo

I wasn't reborn with talent or ability, but at least my knowledge from earth allowed me to stay one step ahead in this other world.Magic exists here, and new progress was rapidly being made in science while magic stagnated in the name of tradition. U