During his stay in the Zachary palace, Whittaker had come across an interesting topic. It was about the forbidden land. More specifically, it's called the dead land or the land of darkness. It's a vast place that lacks mana and is always dark. Never once had the light of the sun shone on that place. Moreover, evil creatures such as skeletons and liches roam that place. However, there was a human kingdom there and it has existed for countless eons. Although an unofficial kingdom, it was still established in that deadly place.
He wondered how they even survive in that place without any mana, how they fight against the evil creatures and his questions were answered as he researched more about this topic. The humans there used a very large number of ways and all of them were connected to professions.
