Mount Natagumo Arc

The Mount Natagumo arc follows the Demon Slayer Corps' operation to slay the Spider Family on Natagumo Mountain. Its head is Rui, Lower Rank Five of the Twelve Kizuki, who has turned other humans and demons into a replacement family that he abuses. Envious of the bond between Tanjiro and Nezuko Kamado, Rui loses his calm and attacks erratically until Giyu Tomioka kills him. Murata is one of the survivors, and after the mission the Kakushi Goto brings Tanjiro before the Hashira to be put on trial.