Mahjong Hishouden: Naki no Ryuu
Japanese title: 麻雀飛翔伝 哭きの竜
Type: OVA
Episodes: 3
Source: Manga
Genres: Action, Drama
Studios: Gainax, Magic Bus
Producers: Bandai
Duration: 44 min per ep
Rating: PG-13 - Teens 13 or older

The protagonist, Ryuu or Crying Dragon, is a mysterious man who often plays games with the gang members. He only wins by "ron," a move in which one needs to wait for the opponent's tile to complete the win.

*"Ron" is also called "naki" in mahjong, which has the same pronunciation as "crying" in Japanese.