When Hiroshi was fighting against his rival Gorillaimo, he stumbled over a stone and fell on to a frog. To be surprised, the frog was still alive and it named itself Pyonkichi.
Source: MyAnimeList
Other anime produced by Tokyo Movie Shinsha.
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Pyonkichi Rock'n'Roll
Yume Iki Ticket
Other anime that aired alongside Dokonjou Gaeru.
