"Master, you know, when two almost comparable forces clashed, what will happen?" Suga asked.

Nysh also replied: "The one with better wits wins."

Suga nodded his head: "Yes, at that time, all races had already been divided, but due to the dark era, they banded together and started pushing back."

"Well, after that, the people formed 20 teams, all the very best of each race, sending three people from each race per team to train further and strengthen themselves."

"Without these people though, the defenses of the power decreased by a bit, yet, the momentum suddenly turned to those monster's side."

"Still, they had persevered and managed through it till the 20 teams managed to finish their training."

"Since the dungeons are continuously spawning monsters, the job of those 20 teams was to destroy as many dungeons as they can."

"The war lasted for thirty years, as dungeons get closed, another one opens up."

"But of course, those recently opened dungeons could be closed by ordinary soldiers."