Ryuu, also known as Calling Dragon, is a mysterious man who often plays mahjong with gang members.

Note: The "哭き" (naki) in the title actually comes from 鳴き ("calling" in mahjong, which the main character does all the time), both have the same pronunciation.

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Alternative version: Mahjong Hishouden: Naki no Ryuu - Hiryuu no Shou