𝚃𝙷𝙴 𝙸𝙽𝙵𝙸𝙽𝙸𝚃𝚈 𝙲𝙰𝚂𝚃𝙻𝙴 [異空間無限城]

The Infinity Castle is the location where the Twelve Kizuki's meetings are held and serves as Muzan Kibutsuji's Lair.