In a small corner of Yokohama, two mahjong prodigies rise on opposite ends of the board: Keiichi Shindō, a pure-hearted genius who loves the game, and Kenzō Todoroki, a ruthless predator who devours the weak. Their clash sparks a journey across the country, where they face fierce rivals in pursuit of the true title of strongest. In this world, gambling is ten percent skill and ninety percent belief. Real mastery lies in creating your own luck and wielding it better than anyone else.