Before becoming an Upper Moon, Nakime had long dark hair, her bangs partially obscuring her face. After obtaining the rank of Upper Moon Four, Nakime now prefers having her hair parted from each other revealing her face, showing that she only possess a single cyclops like pink colored eye in the middle of her face with the Kanji of Four engraved into her irises to symbolize her rank as one of the Upper Moons.
Nakime is a mysterious yet cold biwa player who displays little emotion. She doesn't speak unless necessary and when she does, she is often straightforward and blunt, making her responses as short as possible.
When Akaza asks her where Muzan is, she replies straightforwardly that he has not yet arrived. She is also questioned as to where Upper Moon One is to which she replies (after Akaza's and Doma's bout) that he has always been there; he was the first to arrive.
At the end of the meeting, Nakime plays her biwa again to separate the Upper Moons and bluntly refuses Doma's offer, cutting him off by sending him back to his temple.
Nakime, now the new Upper Moon Four replacing Hantengu, is shown to be with Muzan. Using small eyeball familiars, she has been tracking down the Demon Slayers and determining their locations and hideout. Expressing her honor at Muzan's compliment for her rapid growth, she uses her technique to locate Kagaya Ubuyashiki.
When the Demon Slaying Corps arrive at the Ubuyashiki mansion to try and stop Muzan, they are all transported into the Dimensional Infinity Fortress and separated from one another by Nakime.
Later, during the beginning of Tanjiro and Giyu's fight with Muzan, the latter reveals that Nakime has successfully "defeated" both Obanai and Mitsuri by crushing them both to death using the rooms of her fortress. However, he is taken by surprise when the supposedly dead duo launch a surprise attack on him, still very much alive, and angrily asks Nakime what she's doing. Muzan is shocked upon learning that Yushiro has completely taken control over Nakime's vision, and with it, the Dimensional Infinity Fortress, which he begins to use against the Demon lord as revenge for his killing of Tamayo.
Abilities and Powers
As the new holder of the Upper Moon Four title, Nakime possesses a tremendous amount of strength. She is capable of using her abilities to hold her own against Obanai and Mitsuri, two incredibly strong Pillars, simultaneously without either of them being able to so much as scratch her.
- Fortress Manipulation - Nakime possesses the ability to manipulate and control a seemingly infinite inter-dimensional fortress by playing her biwa. She is capable of bringing anyone she desires into the fortress and is capable of creating entrances and exits anywhere she desires. By binding and rooting her hair to a nearby wall inside the fortress, she can control the Fortress's positioning as she likes: shifting and changing the positioning of various rooms and walls as if they were her own limbs. However, doing so renders her immobile. Obanai remarks that this ability, while not being very deadly, makes her very annoying to kill.
- Eye Detachment - Later, upon obtaining the rank of Upper Moon Four and presumably receiving more blood from Muzan, she has now displayed the new ability to create and detach several eyeballs from her body. This allows her to spy on others from a long range. With this new ability she is able to successfully find and locate the positions of nearly all members of the Demon Slaying Corps and the hidden mansion of Kagaya Ubuyashiki, who had gone to extreme lengths to hide its location from even the highest ranking members of the Demon Slaying Corps.
- Nakime has many similarities to the former Lower Moon Six, Kyogai. They both use Blood Demon Techniques that allow them to freely manipulate a specific structure at will, have a musical instrument to use their individual techniques, and have been given their epithets based on these instruments.