Yami is a worldwide organization of martial artists who use their skills to gain power. Yami is divided into two divisions: the Hand-to-Hand Combat Division and Weapons Division. They use elements as symbol. In Battle 154 they were formed after World War II many masters lost their lives. They were formed not let martial arts disappear from their culture. They have a lot of connections to the world, mafia, etc. If one of their divisional member were sent to jail like Christopher Eclair. He break and Yami stop the investigation of him. However, both Yami and YOMI have a strict code that they must follow the rules of the victor of the defeater.