Kawaki enrolls at the Ninja Academy and begins classes as a freshman with Himawari and the others. But it’s actually a secret mission to protect a princess from assassins. This is kept a secret because she’s come from abroad to study. Since it is a personal request from Naruto, Kawaki decides to attend the academy hesitantly, where the students are younger than him. Kawaki’s difficult school life with an unreliable teacher named Hana Kaka and his unique young classmates begins!
Kae doesn't even know about this.
.كيت لا تدري حتى بشأن هذا
Wir müssen die Situation
vor Kae geheim halten.
La propia Kae no sabe nada.
La propia Kae no sabe nada.
Questa faccenda, in realtà,
Nem a própria Kae sabe disso.
Тут такое дело… 
сама Каэ ни о чём не знает.