Revelation?

"What kind of existences create the dungeon portals? Are they not naturally manifested?" 

Despite the fact that Nial's question had been directed at the Old Medic, it was Bella who asked this question in utter confusion.

It had always been mankind's assumption that the dungeon portals were naturally created. The process and reason for their manifestation were unknown, but it was thought to be the result of Jundra's evolution.

Some even presumed that Jundra itself caused all of this in order to awaken its own mana.

However, in the end, nobody knew the truth, which was a bitter fact.

That was why Nial's comment was weird. After all, it meant that he knew about 'existences' that created the dungeon portals.

This also included that he was likely to know their reasons to create the dungeon portals.