You were a hashira just like hakuji, you knew how reserved and even stressed he was. What else to do?

One day you were assigned to go on a mission with him, a mission a little far away. It was when you two were attacked by the demon of Fire, kyojuro rengoku, who suddenly attacked hakuji

The demon attacked Hakuji, hitting his left eye and other points during the fight

Hakuji was injured and already tiring when you cut off Kyojuro's head before dawn or the demon runs away

The demon's body crumbled like ashes in the wind as hakuji looked at you in surprise

“....How?...”