The anime series aired on
Fuji TV from July 16, 1980 to April 1, 1981, with a total of 35 episodes, produced by
Toei Animation. It was expected to be a long-running series. Anticipating a long-running series with a successful run, the anime actually included original episodes to avoid overtaking the original work. Rintaro, the director, and Kazuo Komatsubara, the animation director, wanted to depict Genki's childhood in detail, but due to requests from sponsors and others, they decided to have him grow up to a middle school student midway through the series. At that point, Kazuo Komatsubara stepped down and was replaced as character designer and animation director by Takao Kosai. The introduction of original episodes and clever direction toned down the "humid human drama" of the original work, and some praised the depiction of everyday life. However, the series was canceled just as it reached the episode about Eiji Mishima's death, and ended just as the final episode hinted at a match between Genki and Seki after moving to Tokyo. The series' successor,
Dr. Slump became a huge hit, and Toei Animation continued to air in this time slot for approximately 21 years, until episodes 62 and 63 of
One Piece aired on March 21, 2001. The main writer Shunichi Yukimuro, art director Takao Mukuo, producer Matsuji Kishimoto, cinematographer Yoshifumi Sano, editor Masaaki Hanai, sound engineer Kenji Ninomiya, and music selector Shigeru Miyashita were also involved in the successor show
Dr. Slump. As of 2021, there are no plans for a satellite rebroadcast, but all 35 episodes have been available for free streaming on YouTube's Toei Animation Museum channel, with five episodes released every Thursday at noon for two weeks starting from September 9 of the same year. Additionally, on December 8 of the same year, Toei Video announced that they would release a Blu-ray disc called "Ganbare Genki Icchi Mime Blu-ray," which compiles all 35 episodes into one disc. ==Cast==