Mahjong Hishouden Naki no Ryuu  

麻雀飛翔伝 哭きの竜, Mahjong Hishouden: Naki no Ryuu, Weeping Dragon

The main character, Ryuu or Crying Dragon, is an enigmatic individual who frequently engages in games with his companions. He consistently triumphs through a tactic known as "ron," where one must strategically wait for their adversary's tile to complete the victory condition. Notably, "ron" in mahjong is also referred to as "naki," which shares the same pronunciation as "crying" in Japanese.