Tengen Uzui: art teacher. Students call him "gangsta sensei" and he is known for shouting that "art is an explosion" and then blowing up the classroom with dynamite. Kyojuro Rengoku: history teacher. Because of his passion for teaching and love of history, he began throwing his students and arranging cavalry fights during classes. He is loved by his students, and no one at the Academy has bad grades in history. He lives with his parents, Ruka and Shinjuro, and his younger brother, Senjuro.