Demon Slayers vs Muzan Kibutsuji is a battle that takes place in the Dimensional Infinity Fortress, that occurs between a number of unnamed Demon Slayers and Tanjiro Kamado, as well as Pillars Giyu Tomioka, Mitsuri Kanroji, Obanai Iguro, Gyomei Himejima and Sanemi Shinazugawa against Demon Lord Muzan Kibutsuji.