You are Y/N L/N, a 15 year girl enthusiastic about the anime Demon Slayer, but what happens when you wake up in it and to make it worst, you find yourself with the Demon King, Muzan Kibutsuji!
You are Y/N L/N, a 15 year girl enthusiastic about the anime Demon Slayer, but what happens when you wake up in it and to make it worst, you find yourself with the Demon King, Muzan Kibutsuji!
Has your fiancé got infected from a incurable disease and both of you suddenly turned immortal from the strange medicine the doctor gave you two ?
Not to worry because we have the story that you mi...