The anger of an honest person is truly frightening.
Although Gui Kotonoha is indeed characterized as frail and sickly, throughout martial arts novels, many frail yet formidable experts exist, and they are generally not to be trifled with. Ancient Dragon once said, there are three types of people you shouldn't cross in the Jianghu: children, women, and monks. Gui Kotonoha, currently only a high school freshman, embodies two out of these three traits, and when she acts, she acts decisively.
The actual fight didn't last more than half an hour, but in that short time, Gui Kotonoha achieved a shocking feat. She not only dealt with Kato and her gang of four delinquents, but also the captain of the basketball team and his group, sending them all to the hospital.
Of course, Gui Kotonoha was considerate, as Fang Zheng noted, she held back, giving each one a debilitating fracture. While they could resume daily life, intense sports competitions were out of the question for them.
