Oshikawa Untaro

Yoshioka is a young but talented student living a lonely life, one without parents or friends. He earns money by playing mahjong as a rep player, despite his age; his life is a constant fight for survival! "To me, to live is to fight." This is the story of a fearless young man in a dangerous path, one that leads many to destruction; will Yoshioka be able to live on such a risky edge between ruin and survival? (Note: The series first got a canceled 2-volume tankoubon run before getting a compiled 5-volume renkaban run, finally later getting a completed 10-volume online-only run. Numbering should use the online edition.)

A gentle but monstrous mahjong. The power player Franken looks up to his teacher, the mahjong gambler Take-chan. While he was strong in the past, he now lives as a drifter to run away from his debts. The curious journey of the superhuman Franken and the gambler Takei begins!!

A homeless unemployed man gets by thanks to his mahjong skills. He's a talented player & one day he's asked to participate in a game with rates 10 times higher than usual.

After losing everything and running away, there is a free mahjong parlor in the crowds of Shinjuku. I have 0 yen to my name, Still I chose to live. This is a battlefield. And in a battlefield… it's kill or be killed.

Kashiwagi, a genius gambler, is a professional poker player who excels in the Las Vegas scene. On the day he returns to Japan for the first time in five years, someone drugged him with sleeping pills and abducted him from his hotel. When Kashiwagi wakes up, he is bound and confined to a strange chair and forced to participate in a deadly gambling game. The first game turns out to be a "four-card nervous breakdown" in which he must match the numbers on four cards…… Who will be the first victim!?