本作品と同時上映された、2分18秒の短編映画。『モモタロスのなつやすみ』と同様、実写のイマジンの顔とアニメーションの胴体を合成した2頭身のキャラクターによって描かれる、ドタバタのショートギャグ作品。DVDには通常版・コレクターズパックともに、本編と同時に収録されている（BD版も同様）。
Alongside Climax Deka, the animated short Momotaros's Let's Go Kiva! (モモタロスのキバっていくぜ!, Momotarosu no Kiba'tte Ikuze!) was shown as a double feature and is a Momotion Picture (モモーションピクチャー, Momōshon Pikuchā), much like Momotaros's Summer Vacation in using live action photographs, 3D computer graphics, and traditional animation. In it, Kivat describes the history of motion pictures until Momotaros knocks him off and wonders what kind of movie they're going to be in, imagining a pirate movie. But the other Tarōs have different ideas of their own, from Urataros' Romance film to Kintaros's Wabi-sabi and then Ryutaros' animal movie. By the time Kivat throws in his own ideal movie, a biopic telling his life story from 22 years ago, the credits to the short start up and he bites Momotaros in frustration while the other Tarōs leave to see the movie.
