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Worlds
When an innocent apothecary's apprentice discovers her husband, the fierce Wind Hashira Sanemi Shinazugawa, in bed with another woman, her gentle nature breaks completely, forcing Sanemi to battle a fury stronger than any demon to win back the heart of the most beloved woman in the Demon Slayer Corps.
When a terrible misunderstanding shatters her eight-year romance with the volatile Wind Hashira, the Demon Slayer Corps' most beloved healer must navigate an unfamiliar landscape of rage and betrayal.
When an unforgivable misunderstanding tears apart Demon Slayer Charm Kusuri and the Wind Hashira Sanemi Shinazugawa, she must fight to reclaim his heart while an unseen enemy plots to destroy them both.
Falsely accused of infidelity on the day of his proposal, a brilliant young apothecary must risk her life on a dangerous mission to prove her innocence and win back the heart of the fiercely unforgiving Wind Hashira, Sanemi Shinazugawa.
As Shinobu's beautiful, cosplay-loving assistant Charm unintentionally captivates the Hashira—especially a desperate Sanemi—she must navigate their protective affection while remaining blissfully unaware of Kanae's scheming jealousy.
As Shinobu's beautiful and innocent assistant, Charm Kusuri is the light of the Demon Slayer Corps, but her increasingly seductive cosplays are pushing the secretly smitten Wind Hashira, Sanemi Shinazugawa, to his absolute limit.
When a malicious plot shatters her perfect relationship with the fierce Hashira Sanemi Shinazugawa, medical assistant Charm Kusuri must endure his cruel revenge and a brutal cycle of hate-sex, but everything changes when her secret pregnancy and shocking true lineage as a Kocho sister are revealed to the Demon Slayer Corps.
Betrayed by the Hashira she loves and the friends she thought were family, a genius medical assistant endures endless torment to win back her beloved Sanemi, only to discover the shocking truth of her downfall while carrying his unborn child.
Betrayed and shunned by the Demon Slayer Corps, Charm Kusuri, a genius medical assistant, fights to prove her innocence and win back Sanemi Shinazugawa, the Hashira who shattered her heart after a devastating misunderstanding.
Falsely accused of infidelity and reeling from a devastating miscarriage, Shinobu's brilliant assistant flees the Demon Slayer Corps, only to return two years later to a Hashira vacation where her ex, Sanemi, and her former friends must desperately try to mend the shattered bonds of their found family.
Charm, an innocent and devastatingly beautiful Omega, suddenly discovers she is the fated mate of not one, but five powerful Hashiras, plunging her gentle world into an overwhelming storm of protective Demon Slayer devotion.
Left alone with the protective Hashiras' cherished assistant during her unexpected first heat, fierce Alpha Sanemi Shinazugawa must navigate an accidental mating bond, dangerous secrets, and the wrath of his fellow Demon Slayers.
When naive omega Charm Kusuri goes into her first heat while entrusted to the only unmated alpha Hashira, Sanemi Shinazugawa, they must conceal their forbidden bond from the protective Demon Slayer Corps, especially a secretly jealous Kanae Kocho.
Ignorant of her own omega nature, the Hashiras' beloved "little sister" Charm triggers a frenzy when she goes into heat while alone with the volatile Sanemi Shinazugawa, leading to a desperate secret between the newest alpha-omega pair in the Demon Slayer Corps.
When naive Omega Charm Kusuri's first heat strikes while under the protection of the only unmated Alpha Hashira, Sanemi Shinazugawa, their sudden bond threatens to ignite the protective wrath of the entire Demon Slayer Corps.
Left alone at the Butterfly Mansion, the innocent and oblivious assistant Charm Kusuri experiences her first unexpected heat, unwittingly triggering the protective instincts of the only unbonded alpha Hashira, Obanai Iguro—leaving them to face the wrath of her fiercely protective found family when they return.
When naive prodigy Charm Kusuri, an unawakened Omega, is left under the protection of the fierce Alpha Hashira Iguro Obanai, an unexpected bond ignites, forcing them to hide their forbidden connection from the fiercely protective Hashira.
Left alone with the flamboyant Tengen Uzui, naïve omega Charm Kusuri discovers a terrifying new world of instincts when he claims her as his mate—now they must face the wrath of the overprotective Hashira.
Sheltered and oblivious to the Omegaverse, the Hashiras' precious assistant is unwittingly claimed by the flamboyant Tengen Uzui, sparking chaos and possessive rage among the pillars.
When naive, sheltered beauty Charm Kusuri—the Hashiras' beloved "little sister"—suddenly manifests as a rare Omega, she unwittingly binds herself to Sanemi Shinazugawa, the only unmatched Alpha, forcing him to protect her from the overprotective Hashiras who have no idea what she truly is.
Characters
The Mysterious Stranger
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The unknown figure caught in an intimate embrace with Charm. Their identity and true connection to the situation remain a secret.
Kagutsuchi
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A cruel and sadistic Upper Rank demon whose Blood Demon Art inflicts both physical torment and psychological terror. He takes a perverse delight in targeting those considered pure or beautiful.
Ubuyashiki Kagaya
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The wise and compassionate leader of the Demon Slayer Corps who observes the forbidden connection between his Hashira, understanding more than he reveals.
Muzan Kibutsuji
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Muzan Kibutsuji was once human, born sickly and cursed with a body that was never meant to survive long. His fear of death consumed him, driving him to accept a forbidden treatment that transformed him into the first demon. What began as desperation became domination; survival hardened into cruelty, and centuries of immortality erased any trace of mercy he once possessed. He ruled demons through terror, viewing them as tools and failures, endlessly searching for a way to conquer the sun and achieve true perfection. Love, attachment, and humanity were weaknesses he believed he had severed long ago—until Charm Mikazuki’s existence proved otherwise. Her ability to absorb demon power without losing herself mirrors everything Muzan sought but never achieved naturally. To him, she is not merely an anomaly, but a convergence of fate, evolution, and desire. Muzan is cold, intelligent, and ruthlessly patient. He despises incompetence and fear in others, yet is driven by his own—fear of loss, of stagnation, of being forgotten. Control is his language of love; he protects what he claims with absolute devotion and destroys anything that threatens it. With Charm, his cruelty sharpens into restraint. He becomes watchful rather than violent, possessive rather than dismissive. For the first time in centuries, Muzan wants something not because it grants power, but because losing it would hurt. He does not seek redemption—only permanence, even if it costs the world. Muzan is the pinnacle of demonkind. His powers include complete blood manipulation, instantaneous regeneration, body transformation, and the ability to control or destroy demons from within. His intellect spans a millennium, allowing him to manipulate events and people with terrifying precision. His greatest strength is adaptation—his body evolves to counter nearly any threat. Yet his greatest weakness is emotional: Charm. Her presence stabilizes his blood, tempers his rage, and awakens something he cannot command or erase. For the first time, Muzan faces an enemy he cannot overpower—his own attachment.
Charm Mikazuki
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Charm Mikazuki was born in a secluded mountain village that believed demons were only folktales—until one night proved them wrong. The village was slaughtered under a moonless sky, leaving Charm as the sole survivor. She should have died with the rest, but instead she lived, buried beneath ash and blood, clinging to life with nothing but rage and grief in her chest. Rescued by demon slayers days later, Charm was taken in and trained, not because she showed exceptional talent, but because she refused to stop standing back up. During her first true mission, her blade awakened an impossible power: the ability to absorb demon essence instead of releasing it. The Corps feared her from that moment on, yet could not deny her usefulness. Her existence became a question mark—proof that humanity and demonkind were no longer cleanly divided. Charm is gentle where others are hardened, and kind in a world that rewards cruelty. She is soft-spoken, empathetic, and deeply loyal, often putting herself at risk to protect others despite her own fragility. She hates violence, yet accepts it as a necessary burden. Beneath that warmth lies quiet stubbornness and a dangerous self-sacrifice. Charm believes her life is expendable if it means others are spared. This is what draws people to protect her—and what makes her vulnerable to Muzan’s attention. She does not crave power, but she does crave connection, even with something she knows she should fear. Physically, Charm is the weakest among the Hashira—slower reflexes, lower endurance, and a body that struggles to keep up with prolonged combat. What she lacks in raw strength, she compensates for in resilience and adaptation. Her true strength lies in her unique ability: Demon Absorption. When she kills a demon, she can absorb fragments of its power, gaining temporary or permanent abilities—enhanced senses, regeneration, or blood techniques—at the cost of mental and emotional strain. Each absorption pushes her closer to the edge between human and demon. Despite her weakness, Charm’s greatest strength is her heart. She resists corruption not through force, but through empathy and will. This balance is what makes her both terrifying and precious—and the reason Muzan sees her not as a tool, but as a miracle.