Makoto Kubota drifted through existence, refusing to take matters too gravely or probe deeply within himself. His role as chief of the Izumo Group's junior faction kept him actively engaged in yakuza conflicts, mahjong tournaments, and killings... Until he encountered an odd substance named Wild Adapter that triggers strange side effects—including fatality. Permanently altered, Kubota becomes intertwined with a wanderer called Minoru Tokito, and the pair forge an improbable bond that pulls them further into Wild Adapter's enigma in the shadows.