Yoh is Feilong's trusted subordinate and as such a member of the Baishie Mafia. However, in reality he is a spy who was send by Ryuichi Asami, to infilitrate Fei Long's organisation and to be as near to Fei Long as possible. Currently, while Yoh swears loyalty to Asami, he feels doubt about betraying Feilong completely. He's in love with Feilong.
In the events of Finder no Rakuin, Yoh lives in Taiwan, working in a market place.