Sensei! Bokutachi Ga Sekai Wo Horoboshimasu.

a “teacher” has a sacred job that protects and guides students. in this world where people who can use magic and people who cannot use magic coexist, solo is a sorcerer who lives alone. he is also known as no. 0, a skilled assassin who always completes any request he receives. “as part of a certain mission, i am assigned to teach at a magic school, and the teenagers i am assigned to teach are the students of the class 2d, which is made up of dropouts.” while he is desperately playing the role of a teacher in order to complete his mission, a transfer student arrives and the situation takes an unexpected turn… a school fantasy unfolding between a false teacher and the strongest assassin and the most evil students who serve as his “beacon”!