Recently stationed Air Self-Defense Force rookie Hisone Amakasu is chosen by a dragon concealed within Gifu Air Base to be his pilot.

After accidentally breaking a statue of the guardian god of the Asakusa district, middle school students Kazuki, Toi and Enta are transformed into kappas -creatures from japanese folklore- by Keppi, self-proclaimed prince of the Kappa Kingdom. If they want to regain their human form, they must collect the five Dishes of Hope for him, which fulfill the wishes of whoever possesses them. To do so, they will fight against the kappa-zombies and extract their "shirikodama", the mythical organ containing humans' deepest desires. Two policemen, Reo and Mabu, are the ones behind this evil scheme, turning humans into zombies as agents of the Otter Empire, enemy of the Kappa Kingdom since ancient times. In the guise of "Kappazon, Inc.", they control society by manipulating the desires of the masses for their own goals. To succeed in their mission, the boys must be connected through the "Sarazanmai", revealing their most intimate secrets in the process...

Professional killer Ken is trying to break away from the yakuza. Taking up work at a local motorcycle shop, he forges a new life under the motherly eye of Yoko, an older woman who owns the shop. However, Ken's dark past isn't letting him go that easily. Akira, Ken's ruthless mentor and himself an assassin, has been coming around and pressuring Ken to return to the family. Together with orphaned teenager Tsuyoshi, Ken decides to take to the road and settle matters in the only way he knows - by the trigger of his gun.

A wanderer and his son arrive on an obscure northern island of Japan, causing the village of Pu to fall into disarray.