One of the civilians recruited by Enmu to enter the dreams and destroy the spiritual cores of the Demon Slayers aboard his infinity train, who wants to dream because he suffers from tuberculosis. He ties himself to Tanjiro and enters his dream with the intention of killing him, but is touched by the beauty and kindness of Tanjiro's unconscious realm. When Tanjiro wakes up and the young man is pulled from his dream, he holds onto a manifestation of Tanjiro's kindness and takes it into his heart.