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. His form of fighting is through his Drum, and Blood Demon art: "Drum Spells." Kyogai is tall, and relatively quiet.