In the novel, after Zirix challenged Leon and when they were about to fight, Amelia would come to stop them. But then Edward and Lincoln who recognized Leon too, would fan the flames from the side a little, making Leon more angry. Rebecca would then come forward to stop the fights, as their arguments were getting the attraction of everyone around them.
Zirix, who saw many top rankers and top students standing near them, followed his God's advice to wreak havoc and start a brawl. In his eyes this situation was even better as he could now fight and defeat many rankers, and show off even more to his god. Thus he started attacking Leon, and when Rebecca interfered, her too. Amelia came to help her and pushed Zirix aside. While Lincoln and Edward took the chance in chaos to beat Leon from behind.