Known as the "Crying Dragon," Ryū is a shadowy figure who frequents high-stakes mahjong matches against gang members and delinquents. His trademark strategy involves exclusively employing the "ron" tactic to win, deliberately waiting for opponents to discard the tile that completes his hand rather than forming it himself. This approach highlights his patient and calculated style of play. Ryū operates within a narrative centered on mahjong and yakuza activities. Across all documented media—including manga, OVAs from 1988 to 1990, and video games released between 1990 and 1995—his origins, personal history, and motivations remain unexplored. His enigmatic persona shows no evolution in backstory, relationships, or character development.