Akiko Muta

A young boy named Rentaro and other ninja apprentices attend Ninjutsu Gakuen - a top ninja academy. Rentaro is determined to become an elite ninja!

Kazuki, a Japanese high school student, is dragged into the world of fan comics along with his friend Mizuki by the scheming Taishi. Taishi soon convinces Kazuki to draw his own fan comic, but Mizuki, who hates the large crowds and long lines of comic book conventions, fiercely opposes the idea. As Kazuki's obsession with finishing his comic in time for the next convention threatens his schoolwork and his relationships, he becomes estranged from Mizuki.

Rantarō, Shinbei and Kirimaru are ninja apprentices in the Ninja Gakuen, where first grade ones are called "Nintamas". They must learn everything a ninja must know, but as for our heroes, money, food or playing are more interesting. The series show the everyday adventures of our heroes.