Mount Natagumo.Zenitsu has calmed down and develops a crush on Nezuko. A Kasugai crow comes after the doctor says they're healed and tells the three to go to Mt. Natagumo. They come in sight of the mountain, though Zenitsu is too scared to go on. Tanjiro smells something and runs to it, Zenitsu forced to follow so he isn't left alone. They find a wounded Demon Slayer collapsed on the path but he is yanked into the trees by threads attached to him. They find another terrified demon slayer, Murata, who tells them ten higher ranked demon slayers, including him, came to the mountain, but they started killing each other...