Worlds
32 worlds

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

Demon Slayer's Redemption Market
by javs
When a lonely woman discovers the Upper Moons—Douma, Akaza, and Kokushibo—caged and broken at a supernatural flea market, she risks everything to give history's most dangerous demons a second chance at humanity, unaware that their gratitude might be the most dangerous thing of all.

The Demon Slayer's Nightmare: Lower Moon One's Tantrum
by meloeebirot67
When Muzan's most terrifying weapon is a 600-year-old demon with the mind of a five-year-old, even the Upper Moons tremble—because Kocho doesn't kill her victims, she plays with them until they beg for death.

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.

Demon King's Chosen: Muzan's Obsession
by SweetGirly
When the immortal Demon King Muzan Kibutsuji singles you out as his favorite among all demons, survival means navigating his dangerous affection while the Demon Slayer Corps closes in—but his possessive protection might be more terrifying than any blade.

The Siren Who Sang to Muzan
by jackscute04
When a demon discovers Elunaria—the last siren with a voice that kills and glowing purple tail—lurking near a village, he drags her before Muzan Kibutsuji, forcing the ancient sea predator into a deadly game with the Demon King himself.

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.

Muzan's Spy
by clockwork_cat42
A demon slayer infiltrates Muzan's inner circle in Demon Slayer, but his obsessive attention blurs the line between deception and desire.

The Crimson Blade of the Demon Slayer Corps
by ellacount6
When Yua Daigo discovers a long-lost breathing technique passed down through her bloodline, she must master the dangerous Blood Breathing to become a Hashira and avenge her family, even as the power threatens to consume her very soul.

Muzan's Favorite: Upper Moon Zero
by charlotteke2013
As the secretly favored Upper Moon of Muzan Kibutsuji, you must navigate the deadly politics of the Demon Moons while hiding your ultimate power from both the Demon Slayers and your treacherous kin in this Demon Slayer tale.

Muzan's Favorite: Blood Demon Art
by jellylover101224
Chosen by the Demon Lord himself, a newly turned upper-rank demon must survive the vicious hierarchy of the Twelve Kizuki while concealing a terrifying truth about their Blood Demon Art that could unseat Muzan Kibutsuji.

The Demon Lord's Wife
by _pending_claims_
I thought I married a wealthy, sickly nobleman named Muzan Kibutsuji, but after a string of mysterious disappearances in our estate, I discover my husband is actually the terrifying progenitor of all demons.

Blood Moon Intoxication: The Demon King's Forbidden Harem
by nana
When Muzan and his Upper Moons consume enchanted demon blood that strips away their inhibitions, a single night of forbidden passion between the Demon Slayer universe's most powerful beings spirals into an addictive daily ritual that threatens the hierarchy of the Twelve Kizuki.
A Demon Slayer's Secret: Silver and Steel
by cautumn91
When an Upper Moon attack forces Giyu's apprentice to reveal her past as a lethal assassin syndicate leader, she must navigate her sudden promotion to Hashira and the sudden distance from the mentor she protected.

A Face From the Past
by Avani_bird
Upper Rank Three Akaza doesn't remember his lost love Koyuki, but he cannot stay away from the Hashira who bears her exact face.

The Surgeon's Edge
by cautumn91
A terrifying new Hashira, known for surgically dismantling demons rather than simply decapitating them, must use her gruesome skills to combat a rising threat alongside a Water Hashira who is drawn to her unnerving nature.

The Hidden Breath
by colinomichela60
A Demon Slayer, wielding a forgotten breathing style, must confront her past and the rising demon threat to save her cursed sister.

The Rose Hashira: Jia Senju's Stand
by imranshah2919
As a devastating demon attack plunges the Demon Slayer Corps into chaos, Jia Senju, the enigmatic Rose Hashira, must confront a terrifying new threat while wrestling with the secrets of her past.

The Slayer's Shadow: A Demon Slayer Tale
by cautumn91
When a seemingly low-ranking Demon Slayer defeats Upper Rank Three, she must hide her true, terrifying power while saving the lives of two heavily injured Hashira.

The Courtesan's Demonic Flame
by couquettegirl
A beautiful courtesan is drawn into a dangerous love triangle between the powerful Flame Hashira and a secretive, alluring demon.

Mugen Train Rewrite
by xlstrawberrymilk
Thrust into the Demon Slayer universe three months before the devastating Mugen Train arc, Sora Hoshigami must use her future knowledge to become a Hashira and rewrite the tragic fates of her favorite characters.

The Assassin's Breathing: A Demon Slayer Tale
by cautumn91
When a routine Demon Slayer mission turns deadly against Akaza, Giyu's secretive apprentice unleashes her true, lethal nature—revealing her past as a master assassin and forcing her master to confront his own hidden feelings.

Blood Moon Rising: The Demon's Ascent
by binajaiswal45270
A newly turned demon, a young woman, must claw her way up the ranks of the Upper Moons, battling her own monstrous urges and the Demon Slayer Corps, to ultimately challenge Muzan Kibutsuji himself.

The Flame Pillar's Betrothed
by couquettegirl
Arranged to marry a beautiful noblewoman, Kyojuro Rengoku must balance his growing affection for his soon-to-be bride with his duty to the Demon Slayer Corps, unaware that a powerful demon has set its sights on his beloved.

Muzan's Greatest Weakness
by Avani_bird
As the most beautiful demon in existence, you hold every Hashira, Kizuki, and even Muzan Kibutsuji himself in the palm of your hand—but can you survive being the one thing everyone in the Demon Slayer world desires?

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.

The Upper Moon's Lament
by varelacynthia71
Douma, Upper Moon Two, finds himself experiencing a strange, unfamiliar sensation: genuine emotion. As he struggles to understand these newfound feelings, his perfect facade crumbles, threatening his position within the Twelve Kizuki and the very foundation of his twisted existence.

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.

Muzan's Favorite Demon
by tempezzzst6021029
Trapped in the twisted hierarchy of the Twelve Kizuki, a reluctant demon must navigate Muzan Kibutsuji's unpredictable favor while desperately searching for a cure to their own monstrous nature.

Tides of the Demon Corps: A Hashira's Stand
by Nobody
Rising through the ranks of the Demon Slayer Corps, a young swordsman must master a forgotten breathing style to become a Hashira and face a terrifying new Upper Moon demon before it obliterates their entire squad.

The Last Hashira
by nethlim49
When a new, unpredictable Demon Slayer rises to the rank of Hashira, they must master a forgotten breathing style to defeat a terrifying new breed of demons before the Demon Slayer Corps is wiped out entirely.

The Ice Demon's Redemption
by starreid03
When Upper Moon Two Douma gains the ability to feel human emotions for the first time in centuries, he must choose between his loyalty to Muzan Kibutsuji and an impossible path toward salvation in the demon slayer world.
More with Akaza

The Hashira's Captors
by xlstrawberrymilk
Captured by Muzan and his top Upper Kizuki, Hashira Sora Hoshigami finds herself entangled in a web of unexpected desires and deadly loyalties within the Demon Slayer universe.

Demon Slayer Upper Moons' Wager - Beginning after the End
by ivanaborovinova1405
In the Demon Slayer world, a lone survivor of a demon massacre becomes the twisted prize in a deadly bet between the Upper Moons—who can keep her alive without devouring her?