Kohei Uchimura is a Japanese athlete, mostly known for competing in the Olympics. He appeared in a Yu-Gi-Oh! ZEXAL one-hour special, Aim For Number 1 in the World!. The said special aired on September 17, 2012 at noon in Respect for the Aged Day, which is a holiday in Japan.
According to revealed info, "Such a special will have a brand-new anime episode in which an animated Uchimura appears. In the episode, we see a boy training in a gym after a loss in a tournament, and he reveals his face as Yuma Tsukumo, the main character of Yu-Gi-Oh! Zexal. The story turns when Uchimura appears at the gym, and the special will emphasize Yu-Gi-Oh! and Uchimura's common theme of never giving up when facing a challenge".
-  - Yu-Gi-Oh! ZEXAL one-hour special starring Kōhei Uchimura.
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