That journal, though vague in many areas, had mentioned something crucial—the classification of geniuses in the Middle Domain.
According to it, geniuses were divided into four clear levels. A 1-star genius had the potential to cross one small level to fight stronger opponents. A 2-star genius could cross two levels, and a 3-star genius—those rare and monstrous individuals—could fight opponents three minor levels above them with ease.
But then there was the final category: Heaven Grade geniuses. The diary hadn't revealed much about them, but what little it said was enough to leave an impression. A Heaven Grade genius could fight across five small levels—a feat so incredible that few believed it even possible.
