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Ninja Kids!!! is a 2011 Japanese family-oriented comedy film directed by Takashi Miike. The film is live-action adaptation of the Japanese anime series ''Nintama Rantarō''. The film stars Seishiro Kato as Rantaro who is sent to a ninja training school by his parents. During the summer, they are challenged by a group of rival ninjas which culminates in a race to ring a bell on top of a mountain. imdb.com