Mahjong Hishouden: Naki no Ryuu
Genres: Action, Drama
Type: OVA, Episodes: 3
Aired: May 25, 1988 to Jul 27, 1990
Studio: Gainax, Magic Bus
Source: Manga
Rating: PG-13 - Teens 13 or older
Synopsis:
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.