Heine Wittgenstein is a pint-sized man given a monumental task. He's recently hired by the King of Grannzreich to whip four of his five sons into royalty material as their tutor. At first glance, the princes have all the allure and refinement Heine would expect but underneath their manicured exteriors are four potentially terrible tyrants.

Keisuke Uedaas Heine Wittgenstein (Voice)
Yūya Asatoas Kai von Glanzreich (Voice)
Yuuto Adachias Bruno von Glanzreich (Voice)
Daisuke Hiroseas Leonhard von Glanzreich (Voice)
Shouta Aoias Licht von Glanzreich (Voice)
Daisuke Namikawaas Ludwig (Voice)
Shinnosuke Tachibanaas Maximilian (Voice)
Toshiyuki Morikawaas Viktor von Glanzreich (Voice)
Kazuko Sugiyamaas Maria von Glanzreich (Voice)
Hiroki Takahashias Dmitri (Voice)