Limits
Kayden always held his classes sitting on a tree trunk that was located several dozen meters high outside the city. The city was large and could house a few hundred million, but hundreds of billions were at a different level.
"In a world where there was no mana at all, humans were ordinary beings. They could only rely on the limits of their body and mind." The idea of a world without mana was terrifying. "I came from that world, and through many different circumstances, I ended up here." Kayden's revelation was deafening to most, as they knew nothing about him.
"Lies! My great-grandfather told me he met your family in the old empire," a voice emerged from the crowd with a degree of courage that no one there could believe. Kayden had placed that person there.