Tengen Uzui. Tengen is the art teacher at Kimetsu Academy. Tengen had white, long hair, wears a jacke. He blew up the art room, saying, “ART SHOULD BE FLASHY” Tengen is an eccentric and flashy individual, always wanting to be "flamboyant", possessing a need for everything to be flashy and outstanding, even proclaiming that he is the god of flashiness and festivals. Tengen is reckless and can be quite lazy. Tengen: Art teacher!