While searching for a knife to cut a cake, Pinoko finds a case containing a scalpel encased in stone. Jack tells her the story of when he received it from Jotaro Honma, the man who saved his life as well as the person who inspired him to become a doctor. Many years earlier, During the operation which saved Jack's life, Honma left a scalpel inside Jack's body, but ignored it for years due overconfidence in his own abilities...