Hibari Kyouya, chairman of the Discipline Committee of Binsheng Middle School and the strongest guardian of the Vongola family, after the curse of the Rainbow Son was lifted, the other Vongola students graduated one after another. Two years later, the chairman of the school's favorite school was inspecting the discipline of Binsheng Commercial Street when he bumped into a chubby little mouse at his feet. Who knows what happened next? This mouse turned out to be a human. A few years ago, he was one of the culprits in Bingsheng Middle School for not obeying the rules and disciplines.