Tengen Uzui: Arts teacher. The students call him "Gangsta Sensei," and he's known for yelling that "art is an explosion" before then blowing up the classroom with dynamite. When he tried to do that, Tanjiro would throw water on Tengen to prevent that from happening.[12] It's rumored he was spotted in a fight during his high school years, and that he's probably good at fighting since he was once a gang leader.