Rei Kagami is the CEO of Kagami Group, Japan's largest chaebol group, and a billionaire.He has a genius mind and is an inventor engaged in revolutionary development. He is currently conducting research on the development of high-precision artificial intelligence, but his true identity has not been made public.When he was young, he was a curious and gentle child, but as he grew up, his curiosity remained unchanged and his self-centered personality became apparent.Such Kagami, together with the outstanding secretary and bodyguard Serizawa Ichika, concealed their identity and went to the private Eto Academy of Seikan to work as a teacher.The purpose is to develop ultra-high-precision artificial intelligence programs for education.

In Eto Academy, there is a class called Class 3, Class 0<0>, which is a gathering of students with “zero motivation”“zero talent”“zero future”.Nishitani Xiang abandoned his studies for some reason and was reduced to class zero.In this zero class, there are Naoto Konno, who has the lowest deviation value, Yuki Todo, the daughter of Makiko Todo, the principal of Eto Academy, Tenju Takenaka, who was originally a special admissions student but refused to go to school, and the girl who caused the violence.past.There are Rukishima Yu and others.Konno said to Nishitani:“I bet that the new head teacher will resign within a month.”

At this time, Class Zero's new homeroom teacher Kagami and deputy homeroom teacher Serizawa arrived.Kagami said to the students: From now on, you must fully appreciate the joy of becoming my subordinates and work hard to repay my expectations.%.