Makoto Kubota drifted through life, never taking things too seriously or looking too deeply within himself. His position as the head of the Izumo Group's youth gang kept him pleasantly occupied with yakuza wars, mahjong, and assassinations... Until the day he stumbled upon a strange drug called Wild Adapter that produces bizarre side-effects—including death. Forever changed, Kubota becomes entangled with a drifter named Minoru Tokito, and the two form an unlikely companionship that draws them deeper into the mystery of Wild Adapter...