Giyü and Shinobu arrive at Mount Natagumo and split up to cover more ground. Tanjiro and Inosuke's blades barely scratch Father. Tanjiro drops a tree on the demon, cutting it down, but Father uses the tree to block Tanjiro's sword and throw him away. The poison has Zenitsu lose the use of his arms and legs when Shinobu suddenly arrives and lands next to him. Tanjiro safely lands and follows screams to the Daughter, who is being tortured by Rui. Tanjiro asks what Rui's doing, but Rui states it's between him and his "sister," a family affair, which upsets Tanjiro...