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I'll put my own life on the line in order to fight for you!
~ Mukago to Muzan.

Mukago is a minor antagonist in Demon Slayer: Kimetsu no Yaiba. Mukago makes her only appearance in Chapter 51, in the arc prior to the Mugen Train arc. She is a demon and the Lower Moon Four of the Twelve Kizuki, as well as Muzan Kibutsuji's servant.

She was voiced by Kana Ueda in Japanese, and by Kira Buckland in English. The latter also played Malva in Pokemon X and Y, Kirumi Tojo in Danganronpa V3, Marie in Skullgirls, Mimet in Sailor Moon S, and Maimu Okurahama in Kill la Kill.


Mukago's past life is unknown, besides the fact that she was turned into a demon by Muzan, and had been eating humans afterwards. During the meeting in Infinity Castle, Muzan appears before her, Enmu, Kamanue (the Kyogai's replacement Moon), and two other moons and make them kneel. Mukago utters she's sorry to have been ordered to bow as due to his appearance at the time, she thought that Muzan was a female. This causes Muzan to say that she doesn't permission to talk. The demon lord lectured about Rui's death and it has been over a century since the Upper Moons were last replaced, with Lower Moons replaced all the time.

Another demon, Kamanue thinks he can't just tell them that, at which point Muzan reads his mind and angrily asks him why, before killing him. At this point, Mukago is extremely nervous, and start thinking about how she runs away every time from a Hashira. Muzan asks if they fear the Demon Slayers more than him, to which the terrified Mukago denies it. As Muzan asks if she is denying what he said, Mukago starts to cry and tries to apologize, before being killed by her master. At this, Lower 3 (who wanted to survive just as much as Mukago did, perhaps even more) realises that he is screwed no matter what he says as a defense. Using his super speed, Lower 3 tries to reach the entrance to the Infinity Castle, but Muzan somehow catches him, leading to Lower 3 losing his life and Enmu (Lower 1) being the sole survivor.


Despite being a demon, Mukago is truly a coward at heart, as she had no intention of fighting the Demon Slayers, which makes Muzan to view her as useless. It is not known if Mukago really meant to man up when she promised to do so, since she was slaughtered by Muzan before she had the chance. Although, given that she had no intention of fighting the Demon Slayers, she could have had a nicer side to her character.


Mukago has sickly, yellowish skin, two dark red stripes across her cheeks, and a pair of white horns protruding from either side of her forehead. Her eyes were gray with white rings around the sides and dark red sclera with the kanji for "Four" carved over her left iris, framed by a set of notably long eyelashes. She also possessed chin-length white hair with shorter bangs between her horns.


  • Mukago, Daki, and Nakime are the only Demon Moons of the Twelve Kizuki to be female. She is also the only one of those three to be a Lower Rank as well as the only one to die at Muzan's hands.


           Kimetsu no Yaiba logo.svg Villains


Demon King
Muzan Kibutsuji

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

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

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

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

Tengan Uzui's Father | Iguro Family | Doma's Parents | Kanao Tsuyuri's Parents