Worlds
18 worlds

The Demon King's Darling
by ga13.ju.s
Plucked from obscurity to become Kibutsuji Muzan's favored pet, a fragile human must navigate the treacherous, blood-soaked politics of the Upper Moons while desperately concealing a secret that could destroy the Demon King from within.

Muzan's Favorite
by siyavyin.exe
When the Demon King singles you out as his most prized possession, survival means becoming the one thing he can never afford to lose—even if it costs you your humanity.

Defiant Blood
by Avis
In the world of Demon Slayer, a demon immune to Muzan's control becomes his greatest obsession and biggest threat.

Muzan's Favorite
by edencameron74
When the Demon King chooses you as his personal attendant instead of devouring you, survival means navigating his twisted affection while hiding the secret that could make you either his greatest weapon or his next victim.

The Demon King's Lost Light
by jackscute04
A thousand years after Muzan Kibutsuji became the Demon King and lost everything, his wife Elisha—the only woman who loved him when he was human—reappears in a world ruled by demons, still smiling with that same unbearable kindness that once kept him alive.

The Blue Spider's Sting
by XmilkteaX
Ángel, a demon born outside Muzan's control and possessing the elusive blue spider lily, manipulates the desires of humans and Upper Moon demons alike, turning their deepest cravings into brutal psychological and physical torment.

Playing upper moon 2 to survive
by Avis
A temple worker discovers her charismatic leader is the demon Upper Moon Two from Demon Slayer, and survival means playing along with his dangerous obsession.

Demon Slayer: The Cult's Siren
by meloeebirot67
Hidden in plain sight as Doma's concubine, Misora shares his Upper Moon Two rank and uses her chilling Blood Demon Art to induce ravenous hunger in her victims, drawing more followers into his twisted cult.

Demon Slayer: The Tyrant's Chosen Bride
by Ditto
When an impossibly shy Lower Moon demon is suddenly claimed as Muzan Kibutsuji's wife, she must navigate the terrifying politics of the Upper Moons and the deadly whims of the Demon Lord to survive.

Blood Heir: Infiltrating the Demon Slayer Corps
by t0mriddle8867
Muzan's devastatingly beautiful demon-human hybrid son, more powerful than any demon in history, must infiltrate the Hashira by playing the perfect victim—faking suicide attempts, enduring abuse, and hiding his centuries of existence—all while secretly dating Upper Moon Doma and plotting the Corps' destruction from within.

The Courtesan of Eternal Paradise
by t0mriddle8867
Within the Demon Slayer universe, Upper Moon Two Doma's "courtesan" is actually his 123-year-old demon son, a scandalous facade that irritates Muzan and threatens the Hashibira family.

Claimed by the King: Muzan's Omega
by Avani_bird
A lowly Omega demon living unnoticed in the shadows must navigate the dangerous world of the Upper Moons when a sudden mate bond binds her to the Demon King Muzan Kibutsuji, who will destroy everything in his path to claim her.

The Upper Moon Courtesan
by t0mriddle8867
Doma's impossibly beautiful son scandalizes the Eternal Paradise Cult with his scandalous attire and lap-sitting antics, but the Demon Slayer Corps is about to discover this "courtesan" is secretly Upper Moon Two.

Muzan's Favorite
by _pending_claims_
When the Demon King chooses you as his personal attendant, survival means becoming indispensable to the most dangerous being in the world—or dying trying.

Upper Moon Three: A Demon Slayer's Rage Reborn
by crustaceancrystals
Reborn as a female Akaza in the Demon Slayer universe, I must navigate Muzan's brutal hierarchy while wrestling with fragmented memories of honor, an inexplicable hatred of weakness, and the horrifying realization that I'm destined to kill the one demon slayer I'm learning to respect.

Muzan's Favorite Demon
by riannerose.rras
As Muzan Kibutsuji's favored Upper Rank demon, you hold unprecedented power and influence, but survival means navigating a deadly game of betrayal, ambition, and the constant threat of the Demon Slayer Corps.
The Upper Moon's Courtesan
by t0mriddle8867
Demon Slayers investigating the Eternal Paradise Cult must uncover the truth behind its charismatic leader and his scandalous "courtesan" before more innocent lives are lost to a twisted salvation.
The Demon Lord's Shy Bride
by Ditto
Himeko, the painfully shy Lower Moon One, is summoned to an Upper Moon meeting only to discover Muzan Kibutsuji has inexplicably claimed her as his wife, thrusting her into a terrifying new reality she must survive.
