Joint training between the Hashira and the members is underway at Oyakata-sama's command. The Hashira are giving instructions while the members follow their lead. However, a certain member who absolutely despises Sanemi has recently appeared. As Sanemi approaches him during training, the member suddenly stabs Sanemi with a real sword. This happens right in front of the other Hashira and members. Everyone knows this individual; he is on the Demon Slayer Corps blacklist—a notoriously disobedient member. While Tanjiro's group is relatively well-behaved, this member refuses to listen to anyone at all.