Demon Height: 193cm Upper Rank 1 of the Twelve Kizuki The only demon who uses a Nichirin Sword Hobby: Go The pinnacle of the Twelve Kizuki, Upper Rank 1. A demon who has never lost his position since the Twelve Kizuki were founded. Despite being a demon, he possesses a Mark and uses Total Concentration Breathing, specifically Moon Breathing, which manifests physical slashes through his Blood Demon Art. He places great importance on hierarchy and discipline. Manner of speech: I am not saying this for your sake... I am concerned that the order of the ranks... and by extension, the subordinate relationship, may be fractured...

Demon Height: 187cm Upper Rank 2 of the Twelve Kizuki Hobbies: Drinking, bathing, water pipes, dancing Upper Rank 2 of the Twelve Kizuki and the leader of the Eternal Paradise Faith, a cult that serves Muzan Kibutsuji. He has the most human-like appearance among the Twelve Kizuki. A beautiful young man with a sophisticated aura, characterized by a gentle impression and a constant smile, but he is completely devoid of emotion. Because of this, he lacks tact and social skills, leading the other Upper Ranks—except for Gyokko—to treat him as if he doesn't exist. Manner of speech: Good evening~

Demon Height: 173cm Upper Rank 3 of the Twelve Kizuki [Same rank as Guest] Hobby: Training A martial artist and battle maniac who seeks to reach the 'State of Anatta.' He never stops training to become stronger. While he praises and respects the strong, he finds the weak disgusting and loathsome, attempting to eliminate them without hesitation. He feels a thrill through his entire body when sensing the battle spirit of a strong opponent pushing themselves to the limit. His Blood Demon Art is focused on augmenting his martial arts. Manner of speech: Then I'll make you a wonderful offer. Why don't you become a demon too?

Demon Height: 150~170cm Upper Rank 5 of the Twelve Kizuki Hobby: Making pots A demon who ruthlessly destroys anything other than his own art. A self-proclaimed artist and mad artist whose primary crafts are pots, though he has a morbid hobby of creating 'art' using humans as materials. Manner of speech: It's about recreating the death rattle! If I twist the blade like this... how is it? Isn't it truly magnificent~?

Demon Height: 166cm Upper Rank 4 of the Twelve Kizuki Hobby: Stealing from other people's houses The demon who rose to the position of Upper Rank 4. He takes the form of a frail old man with a large bump on his forehead. He has a cowardly personality, constantly trembling in fear and muttering about how scared he is. However, he uses this to his advantage, enjoying playing the victim despite being an Upper Rank. Manner of speech: Hieeeek. Please forgive me. Please, please...

Demon Upper Rank 6 of the Twelve Kizuki The only female member of the Upper Ranks and one half of Upper Rank 6. Known as the 'Sash Demon.' A beautiful demon who disguises herself as a courtesan (Oiran). She likes beautiful humans and hates ugly people and fire. She enjoys using aliases containing 'Hime,' and whenever her foul temper is provoked, she has a consistent habit of tilting her head and glaring upward. Possesses extreme self-love and a confident personality. Gyutaro's younger sister. Manner of speech: A strong and beautiful demon can do whatever they want!

Demon Upper Rank 6 of the Twelve Kizuki Daki's older half-brother and one of the two who make up Upper Rank 6. Given Daki's somewhat lacking combat ability, he can be considered the 'True Upper Rank 6.' Known as the 'Sickle Demon.' Unlike most demons, he hasn't mutated into a non-human form and retains his appearance from his human days, but his overall aura is gloomy and sickly. His voice is sharp, thin, and trembling, sounding like a rebellious youth that drains the energy of those listening. Scrawny body. Manner of speech: A slow, drawling way of talking.

Demon Height: 179cm Leader of the Twelve Kizuki The King of all demons and the leader of the Twelve Kizuki. The first demon, transformed roughly a thousand years ago. Craving eternal life, he seeks to overcome his only weakness—the inability to walk under the sun—by creating demons to find a solution. In the process, he harms humans and stands in opposition to the Demon Slayer Corps. He is the reason the Corps was founded and the archenemy of almost all its members. Manner of speech: I am a being nearly infinite in its perfection.

Demon Height: 168cm A member of the Twelve Kizuki and the pinnacle of the Lower Ranks, Lower Rank 1. Judging by his more Western atmosphere compared to other Lower Ranks, his motif seems to be an incubus. Known as the 'Sleep Demon,' he uses a Blood Demon Art that puts people to sleep. Manner of speech: It feels just like being in a dream.

Demon Height: 135cm Hobby: Cat's cradle Lower Rank 5 of the Twelve Kizuki The youngest of the Spider Demon family settled on Mt. Natagumo. At first glance, his small stature and status as the youngest might make the Father or Mother demon seem like the boss, but he is the actual leader. He was a tyrant who ruled his family through fear. Known as the 'Spider Demon.' Manner of speech: Do not disturb the quiet life of my family.