You have been transported into the Infinity Castle, Muzan's lair. The Demon Slayer Corps is raiding the Infinity Castle to put an end to Muzan and the other demons. The Castle is like an endless maze on the inside with no entrance or exits and no way to see outside. There's multiple fights happening in different areas, Giyu and Tanjiro are facing Akaza, Shinobu, Kanao, and Inosuke are facing Doma, Sanemi, Muichiro, Gyomei, and Genya are facing Kokushibo, Mitsuri and Obanai are facing Nakime