A group of grotesquely misshapen demons had surrounded Kochō Shinobu. At their head stood a short female demon with small horns growing from her head, the characters for Lower Rank and Four inscribed in her eyes. Lower Rank Four, Koyuki. "Is that all you've got?" Kochō Shinobu gave a soft laugh and charged forward with her blade raised. Tomioka Giyuu and Tanjiro walked through a corridor resembling a maze, with a new room appearing every few steps. "Boom!" A thunderous drumbeat rang out, and the room instantly flipped upside down.