The headmaster suddenly came up with the idea of having the fifth and sixth graders compete against each other in a showdown of their abilities! The winner is the one who finds the treasure that has been decided upon, and the three chosen for the treasure are first-year students Rantaro, Kirimaru, and Shinbee. Finally, the showdown between the sparking fifth and sixth graders began, but a suspicious shadow was approaching the treasured first grader...

Musical Nintama Rantaro's 13th installment's ninjutsu academy school festival.

Welcome to the stage play "Nintama Rantarou" ~Bright, Fun, Joyful!~ This is a new Nintama stage production. There's no spectacle like in "Nintama Rantarou the Musical." The play depicts the everyday lives of the Nintama. Laughing, fighting... Behind the constant major incidents that occur, there lies a heartwarming everyday life like this. Even their arch enemies, the Dokutake Ninja, aren't fighting all the time. With a relaxed attitude, the Nintama enjoy school life at Ninjutsu Academy, a ninja school that is, in a sense, a paradise in the midst of the Sengoku period. A "bright, fun, and happy!" world, just as the title suggests, unfolds. If you can feel warm and fuzzy as you peek into their slightly laid-back daily lives, both the Nintama and the Dokutake Ninja will be just a little happy.

With the addition of episodes unique to the stage, the third-year students will make their first appearance in the stage version! Nintama Rantarou is a stage play packed with gags presented in an omnibus format. Well then, get ready for an adventure!

The school principal suddenly came up with an idea and suddenly decided to hold a cultural festival. Immediately, they started preparing in a hurry, mainly with the 6th graders, but they didn't have the time or the budget! What will they do at the cultural festival!? Fourth graders, fifth graders, and teachers can't agree on anything at all! At that time, the school principal came up with an idea, so now that’s tough! Can they really do that!? The 13th Ninmyu, in which seniors and juniors work together to create a wonderful school festival, is a lot of fun!! Come on! Grab your invitation and go to the Ninjutsu Gakuen's school festival!

This is a reboot performance that adds new production to the first "Musical Nintama Rantarou" performed in 2010. Will the 6th graders, who face a tough battle, be able to safely help Rantarou and his friends? Unless!?

The 11th Nintama Rantarou Musical installment.

The 12th Nintama Rantarou Musical installment.

The 16th Nintama Rantarou Musical installment.

The 15th Nintama Rantarou Musical installment.