[DeepL Translation - needs review] Introduction to Volume 1: "Teacher" is a sacred job that protects and teaches students. In a world where both those who can use magic and those who cannot, Solo is a lone mage who lives alone. He is also known as "Number Zero," a skilled assassin who always completes his assignments. While he is desperately playing the role of a teacher to accomplish his mission, a transfer student arrives and things take an unexpected turn... A magical school fantasy unfol...
