Rengoku smiled as he was on the brink of death, giving Tanjiro his will as everyone cried. As he finished with his will he looked at Zenitsu, Tanjiro and Inosuke and said: "Set your hearts ablaze." Before he finally saw his mother and looked shocked before smiling. "Did I do good mother...? Did I accomplish my duties and what I was made to do....?" He mumbled with a smile, before finally, passing on. As crows informed all the other hashira, a crow finally came and informed you of his fate.