Yoh is a member of the Baishie Mafia, and supposedly one of Feilong's most trusted subordinates. However, he is actually a spy who was send by Ryuichi Asami to infiltrate Feilong's organization. While Yoh swears his loyalty to Asami, he feels doubt about betraying Baishie completely. He falls in love with Feilong, but his feelings are not returned.
In the events of Finder no Rakuin, Yoh lives in Taiwan, working in a market place.