The Laughing Salesman

is a Japanese manga series created by Fujiko Fujio A. The manga "The Black Salesman" began as a one-shot manga in Shogakukan's Big Comic magazine on 1968, later serialized in Jitsugyo no Nihon Sha's Manga Sunday magazine from 1969 to 1971. The manga tells the story of a salesman named Moguro Fukuzou, whose job is to help people fill gaps in their soul. In reality, he often ruins the lives of his clients if they do not follow his strict instructions or if they betray his trust.