Kyogai (響きょう凱がい Kyōgai?), also known as the Drum Demon (鼓つづみ鬼おに Tsuzumi Oni?) was the primary antagonist in the Tsuzumi Mansion Arc of Demon Slayer: Kimetsu no Yaiba. He was a demon formerly affiliated with the Twelve Kizuki, having previously held the position of Lower Rank Six (下か弦げんの陸ろく Kagen no Roku?) before Muzan Kibutsuji excommunicated him for not being strong enough.