As a cursed object, Eso was ranked special grade. Eso was incarnated by Mahito's group in order to aid in helping curses to take over Japan. Despite ultimately being defeated by jujutsu students, Eso and Kechizu were entrusted with retrieving one of Sukuna's fingers and nearly killed the students attempting to do so. Eso is a tall, well-built man with black (brown in the anime) hair and violet eyes with a dark sclera. His thin eyebrows have two stud piercings over them.