A pack of hooligans, dispatched by the shadowy "land shark," attacked Kano, the owner of a cafe, but were thwarted by Otowa! From then on, Otowa regularly visited Kano's establishment, preventing the yakuza from causing any trouble. Kano, who was naive about the danger he faced, grew to rely on Otowa's visits... until another equally frightening person convinced him to abandon Otowa's safety, resulting in chaos!