Demon slayer x FEM!reader Raised by an aging samurai in the quiet snows of the north, Y/N's only dream is to see the world beyond her village and wield her sword for something greater. When she begins writing letters to the famous Flame Hashira - never expecting a reply - her words become her secret solace. But years later, a response arrives from someone claiming to be Rengoku himself... though his letters sound far too warm, too young, too alive to belong to an old master. Two souls connected by ink and parchment. One mistaken identity. And a love destined to burn brighter than the flames that brought them together. [DISCLAIMER] I do not own any of the characters except (Y/n) and any original characters. All the other characters and Demon Slayer belong to Koyoharu Gotouge.