Ninja Kids!!! (2011)
Original title: 忍たま乱太郎
Ninja Kids!!! is a 2011 Japanese-language action movie directed by Takashi Miike, with a running time of 1h 39m. It stars Seishirou Katou, Roi Hayashi and Susumu Terajima.
The film stars Seishiro Kato as Rantaro who is sent to a ninja training school by his parents. During the summer, their teacher is invaded by a group of rival ninjas culminating in a race to ring a bell on top of a mountain.