THE ROYAL TUTOR (Oshitsu Kyoshi Haine), by Higasa Akai. First published in 2013 and first published in North America in 2017.
PLOT:
Heine Wittgenstein has been summoned to the Royal Palace of Granzreich for a daunting task: to become the royal tutor and turn the king's four younger sons into men worthy of the throne. This is no small feat, as he has to deal with the stubborn and childish Leonhart, the quiet and taciturn Kai, the scholarly and competitive Bruno, and the flirtatious and flippant Liche. It will take all of Heine's intellect and wit to get past their defenses and prove to them that he is worthy of the role as their teacher.
