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Kyogai, also known as the Drum Demon, is a supporting antagonist in Demon Slayer: Kimetsu no Yaiba anime and manga series. He was the former Lower rank six of the Twelve Kizuki, until he was exiled by Muzan Kibutsuji due to his weakness. He later went on a quest to reclaim his title. He serves as the main antagonist of the Drum House Arc.

He is voiced by Junichi Suwabe in the Japanese version, and by Steve Blum in the English dubbed version.


While being a bloodthirsty oni/demon, Kyogai is actually very collected and soft-spoken, and always mummurs things that irritate him. He is also shown to be intolerate towards rudeness and will kill anyone who barges into his house. Even so, if irritated enough, Kyogai will raise his voice about the nuisance and insult his opponents. But deep down, Kyogai is an insecure man who desires to be recognized by the world for his writing, and was devastated when he was told to give up on it as a human. Even as a demon, his insecurity persists after he was stripped of his title as one of the Lower Ranks. Kyogai became desperate to redeem himself, consuming humans with rare blood to reclaim his title. However, after Tanjiro recognizes his talent, his soul is finally able to rest in peace.



Kyogai was once a human who aspired to be a writer. Unfortunately not only there was no one to understand or appreciate his dream, people sneered and outright ridiculed his talent. To make matters even worse, his skill at drum which he practiced as a hobby in his spare time, was also mocked and unrecognized. Life as a human was a struggle for Kyogai who suffered being constantly ignored. Then at some point in his life, he met Muzan Kibutsuji, received his blood and was turned into an Oni.

In spite of being an Oni, he was still attached to his human dream of being a writer. So he hid his newfound powers and continued to live among humans. Then one day he showed his completed scripts to his editor, hoping for positive feedback. But Kyogai's editor not only verbally insulted Kyogai by denouncing that Kyogai's work is a waste of papers and pencil, but trampled Kypgai's scripts with his foot. That was the last straw for Kyogai. Consumed with demonic urge, Kyogai turned Oni and brutally slaughtered his editor.

Giving up on being a writer or human altogether, Kyogai devoured as many humans as he could, becoming stronger and elevating himself into Lower 6th rank of the Twelve Demon Moons. But somewhere along the line, he slowly began to consume less and less humans - a sign of Oni reaching his evolutionary limit. Discovering that Kyogai had reached his limit, Muzan stripped Kyogai of his title of Lower 6th rank of Twelve Demon Moons. Relegated to his manor and weakened due to him reaching his capability limit, Kyogai sought how to reintegrate into Twelve Demon Moons. To fulfill his wish, he sought "marechi", humans with rare blood - blood that possesses nutrition value 100 times that of the ordinary. A human boy named Kiyoshi possessed such blood, and he would seek the human boy to devour him.

Drum House Arc




Drumming: Kyogai's Blood Demon Art, wielding 6 Tsuzumi drums on different parts of his body, with each drum having a single supernatural effect on the environment of his mansion when played. Each drum makes the room he's in rotate in a certain direction, with the exception of one that creates an invisible slash attack and one that teleports him or others to another room. The range of these drums' effect is limited solely to his mansion. However, Kyogai is unaffected by the changing gravity caused by rotating the rooms.

  • Right Shoulder: Makes the room rotate to the right
  • Left Shoulder: Makes the room rotate to the left
  • Right Leg: Makes the room rotate forward
  • Left Leg: Makes the room rotate backwards
  • Stomach: Telekinetic slash attack meters in front of him
  • Back: Teleports him or other people into another room in the mansion


Rapid Drumming: When Kyogai uses his utmost effort, he is able to drum at an incredibly fast speed, swirling the room at frightening speeds. The strength of his abilities increase, and is most noticeable in his slash attack, which slashes with 5 claws instead of 3.



           Kimetsu no Yaiba logo.svg Villains


Demon King
Muzan Kibutsuji

Twelve Demon Moons
Original Upper Moons †
One: Kokushibou † | Two: Douma † | Three: Akaza † | Four: Hantengu † | Five: Gyokko † | Six: Daki † & Gyuutarou

Replacement Upper Moons †
Four: Nakime † | Six: Kaigaku

Lower Moons †
One: Enmu † | Four: Mukago † | Five: Rui † | Six: Kyogai (replaced) † Second: Hairou (past) † |

Muzan's Lesser Followers †
Susamaru and Yahaba † | Hand Demon † | Swamp Demon † | Spider FamilyFather Spider † | Mother Spider † | Brother Spider † | Sister Spider †) | Snake Demon

Tengan Uzui's Father | Iguro Family | Douma's Parents