"Take it easy, you're safe now." Akari felt anything but safe. How could she when she; the last remaining demon slayer of the modern world, somehow finds herself trapped in the past? Specifically the Taisho Era; a pivotal moment in Demon Slaying History. Plagued by the failure of her mission in her time, Akari must now set off on a journey to prevent such an outcome from ever taking place at all. If she failed again, Muzan Kibutsuji would rule without hindrance in the future, and the lost lives of slain Demon Slayers would never receive the justice they deserve. *Please note that this story will contain manga spoilers, as well as graphic depictions of violence, and mature themes. Reader Discretion is advised as this is intended for mature audiences.* *(Kyojuro Rengoku x OC)* (Various x OC)