A girl born between two worlds-half human, half demon. Her blood heals, her blood kills, and Muzan himself covets it. Trained in the Moonlight Breathing style, she walks the line between light and shadow, feared by humans and hunted by demons. When fate collides her with Tanjiro Kamado and the Demon Slayer Corps, they must navigate a world that seeks to destroy her, confront a power that could consume them both, and face a destiny that will not wait. The question isn't whether she will be hunted-it's whether she will survive long enough to claim her fate. ⚠ 𝙽𝚘𝚝𝚎: Before diving into the main story, its highly recommended reading the "Origin" Chapter. It includes important details about the characters and some essential warnings. It will help you fully understand the emotional depth ahead.

They told her the mountain was cursed. They told her a demon lived there-six eyes, endless hunger, death in his shadow. They told her not to go. But curiosity is stronger than fear. When she steps into the forest, she doesn't find a beast foaming at the mouth. She finds a man: tall, carved from steel and sorrow, his six golden eyes burning with power... and something else. Something she shouldn't name. He should have killed her. Instead, he let her live. Now she can't stop thinking about him. And he can't stop remembering what it means to be human. Their bond is forbidden. Their nights are borrowed. Every heartbeat is a risk. Because to love Kokushibō-the strongest of Muzan's demons-is to fall for a tragedy centuries in the making. And some tragedies don't end in salvation. They end in ruin.

" I still love you, even if you are a demon now. My feelings will never change, not at all. Cause when we first met, I already knew I belong to you."

"Looks like I accidentally married a Rengoku..." "Father will definitely kill me..." Fuyuko Kazahana, a young girl with a tragic pass that she kept as her deepest darkess secret, a sin that she will hold forever even in the afterlife. She enters the world of being a Demon Slayer for her own entertainment and excitement, life is dull for her but whenever she fight, she felt alive. Her cold exterior made her intimidating and cold blooded but Fuyuko is human, who also have emotions. After a plan of hers that gone wrong, she didn't expect to be married to a certain descendant from the clan of flames that had been her father's sworn rival, he hated them very much. But who cares? Fuyuko didn't really care, a certain bright flame brought warmth she never felt and fate unexpectedly turned her world upside-down. Whilst she just go with the flow like a winter breeze.

She's weird and yet unique and amusing in a way. For a certain Pillar that is. His bright and enthusiastic personality with her neutral and calm demeanor. What will happen? (A/N: Demon Slayer rightfully belongs to Kyoharu Gotouge)

Title: Snow Flower Summary: Kyōjurō Rengoku, the Flame Hashira, arrives in a rural, snowy mountain village with the intentions of making (Name), who's known as the legendary 'Yuki-onna,' his wife! Will his flame be enough to melt the ice in her heart? ────────────────────── ⚠Wᴀʀɴɪɴɢ!⚠ Story contains sexual themes and adult content. You must be 18+ to read this. MINORS DO NOT INTERACT!! You are responsible for your own consumption. Disclaimer! This is a work of fanfiction. All characters and trademarks rightfully belong to Koyoharu Gotouge.

Rika Fuji, a user of Ice Breathing. She joined the Corps to slay demons. But with a cold heart, she had a frozen spirit. Nobody could break through her icy walls. And then she met Kyojuro Rengoku. She resented him and his flames. She wouldn't let him melt her icy heart. Rika would make it through the Corps and become an Ice Hashira. She would surpass this Rengoku. Sometimes life doesn't turn out how you want. Warning; this gets a bit spicy! This is mostly based on the events of Demon Slayer, but I have added my twist to it for fun. Thanks for reading.

She was someone who didn't want to live. He was someone who didn't want to die. The story follows Hikari Mori - the Forest Hashira - and Sanemi Shinazugawa as they battle side by side through blood, fear, and fading hope. In the midst of chaos, they find something neither expected: solace in each other. As the world burns around them, their bond becomes both a weapon and a promise - that even in ruin, humanity endures. Now on AO3 (MoriNoHime)

The first time he met her, it felt like the universe crashed into him. The second time, it was fleeting - just long enough to learn the sound of her voice. The third time, he pulled her out of the darkness... but the timing wasn't right. And the fourth time, he never let go. •••••••• Each and every time, his soul had recognized her before his mind did. She was gentle where he burned fierce, soft where he blazed. She was a quiet soul who never learned how to be loud, and he was a flame that never knew fire could also burn tenderly. •••••••• When Kyojuro Rengoku first met Koharu Ito, it felt like destiny announcing itself - not in thunder, but in silence. She was gentle where he was fierce, patient where he was driven. In a world ravaged by demons and duty, their paths should never have crossed more than once. Yet every meeting felt inevitable, as if some part of their souls had been waiting for the other all along. Now on AO3 (MoriNoHime)

After the war, Giyu Tomioka seeks peace in the quiet of Sanemi's hometown. There, he meets Nami Hoshino, a spirited fish seller with a sharp tongue and a heart that beats fiercely for justice. Though their worlds seem far apart, the tide pulls them closer with every encounter. In the rhythm of normal life, Nami teaches Giyu that he doesn't need to atone to be worthy of peace - only to live, and let himself be loved. Now on AO3 (MoriNoHime)