Kunoichi, female ninjas, hail. News Demon Slayer: What are the names of Tengen Uzui’s wives? The new “Red-light district” of the anime Demon Slayer: Kimsetsu no Yaiba introduces a brand new Hashira: Tengen Uzui, the Hashira of Sound. In addition to his unique good looks and the cool Nichirin knives he wields with two hands, Tengen has 3 wives.