Reincarnated into a new world, Y/n tries her best to prevent some of her favourite characters from dying. How could she achieve her goal when she was on the opposite end of the coin. "ᴇᴠᴇɴ ᴛʜᴏᴜɢʜ ɪ ᴀᴍ ᴀ ᴅᴇᴍᴏɴ ɪ ᴡɪʟʟ ꜱᴛɪʟʟ ᴛʀʏ ᴍʏ ʙᴇꜱᴛ ᴛᴏ ꜱᴀᴠᴇ ᴀʟʟ ᴏꜰ ʏᴏᴜ ɢᴜʏꜱ." 1st - Demon Slayer : 4th November 1st - MuzanxReader : 29th October 3rd - Muzan : 29th October 3rd - Kyojuro : 31st October 2nd - Muzan : 31st October Started - 20th October 2021 Finished - ? !!Disclaimer!! Don't own Kimetsu No Yaiba and this is just a fanfiction :D