Mushagakuen

In the age of samurai, young Shibatora and his two best friends are looking forward to enrolling in "Warrior Academy."
However, Shibatora is born into the shogun's family and is bound by official duties and imperial studies.
When his friends who come to his rescue find themselves in danger, can Shibatora unleash his samurai spirit!?

(Source: Kodansha, translated)