Having been defeated by Jingū and driven out of Hamamatsu, Narumi was spending his days in a dingy mahjong parlour. One day, a woman appeared who taunted him. ‘Is it all over just because you lost to Jingū? You, Narumi, the one who always plays it safe,’ she said. The woman, who introduced herself as Natsuki, offered to help Narumi return to his career as a substitute player, saying she wanted to defeat Jingū together. …But why? For her, Jingū was her own brother—the man who had murdered her mother. Before long, Narumi and Natsuki formed a partnership and began wreaking havoc in the mahjong parlours of Hama…!!