Giyu Tomioka (冨とみ岡おか 義ぎ勇ゆう Tomioka Giyū) is a major supporting character of Demon Slayer: Kimetsu no Yaiba. He is also a Demon Slayer and the Water Hashira (水みず柱ばしら Mizu Bashira) of the Demon Slayer Corps.
Shinobu Kocho (胡こ蝶ちょう しのぶ Kochō Shinobu?) is a major supporting character of Demon Slayer: Kimetsu no Yaiba. She is also a Demon Slayer and the Insect Hashira (蟲むし柱ばしら Mushi Bashira) of the Demon Slayer Corps.