After the battle against Muzan and the death of almost all the pillars, Sanemi was very depressed by the death of one in general, by the death of Gyomei. Sanemi and Gyomei had gotten engaged, they promised to get married after finishing against Muzan, but unfortunately it could not be fulfilled. Sanemi went into a deep depression, he couldn't leave his room, he didn't see anyone and whenever they tried to talk to him, he kicked them out

You, his younger brother, Genya, tried to talk to him.