Accepting the post of Royal Tutor at the court of the king of Grannzreich, Heine Wittgenstein is a little professor with a big job ahead! Each of the kingdom's four princes has a rather distinct personality. Does their diminutive new instructor have what it takes to lay down some learning? It's a comedy of educational proportions!

When the king returns to court, it's time for the princes to prove their mettle. But not everyone's been exactly keeping up with Heine's lessons... ( It's the prince who only scored a one on his assessment test...and that was for signing his name!) Can Heine really whip these boys into shape well enough to rule a country?

Sometimes kind, sometimes strict, Heine is prepared to employ any means necessary to draw forth his princeling students' potential. But seriously, what's a royal tutor got to do to enjoy a simple, quiet day off?? With royal engagements, reluctant readers, and secret lives seemingly everywhere he turns, Heine may need to up his game if this kingdom is to have any hope for the future at all!

Heine's efforts to shape the princelings into worthy successors to the throne continues, but it seems that Bruno in particular is struggling with a bit of a crisis of conscience when it comes to his future. Can he live up to Heine's standards to remain his "apprentice"? More importantly, does he have the courage to carve out his own path?

Prince Licht's fascination with coffee should come as no surprise given his affinity for his part-time job at the cafe, but when Leonhard suggests the bitter drink should be banned from the kingdom, can Lichie help him develop an appreciation...?

Heine and the princes have overcome many a difficulty together, deepening the mutual trust between the teacher and his pupils. But even though Heine has walked closely alongside the princes as they slowly come into their own, the royal tutor himself still remains a mystery to them. When Count Rosenberg claims to know who he really is, could Heine's secretive past become public knowledge?

Princes Kai, Bruno, Leonhard, and Licht have been making great strides thanks to an excellent education from Heine, the royal tutor. Even so, with the return of Prince Eins, the eldest of the brothers and heir apparent to the crown, the wall they must climb in the struggle to become the most qualified candidate for the throne looks more colossal than ever. Can the four younger princes stand up to their biggest rival?

Kai makes a friend at school and invites him over to the palace for tea. He asks his brothers for help in making conversation, but is that really such a good idea...? Then it's a battle of wits when Heine joins the princes (and princess!) for a game in the courtyard. After all the time they've now spent under his tutelage, can the students finally overcome the master?

Prince Licht once again finds himself caught between his role as a prince and his desire to have some fun in his life. How will he react when the count offers his assistance?

Three of the princes have left home to study away from the castle and the guidance of Heine, but Leonhard remains, still under the strict observation of the Royal Tutor! Beneath the surface of everyday life lies the fierce will to fight for the right to the throne! With change all about them, now comes the time to grow and learn...

The royal palace is bustling with successive arrivals, which is good news for lonely Leonhard! First, Beatrix comes seeking advice on how to cheer up her cuteness-starved fiancé. Then, young Prince Claude of Fonsein pays a diplomatic visit that pushes Leonhard's foreign-language skills to their limits. When Leonhard's dearest brother Bruno is next to arrive, everyone expects Leonhard to be elated...but the effusive prince is uncharacteristically reserved. Has their time apart soured the bonds of brotherly affection?!

知識は自信を、努力は行動を生む。 王宮の外での学びにより、一回り大きくそしてたくましくなった第二王子カイと第三王子ブルーノ。 第四王子レオンハルトは、勉強を苦手としながらも、語学力を身につけていく。 一方夢を追い、王宮を飛び出した第五王子リヒトは、ある事件に巻き込まれていく…! 王子と家庭教師が、共に歩み、共に成長する王室コメディ第12巻。

未来は「今」がつくる。 カフェ・ミッターマイヤー二号店の開店が迫る中で起こる、店への嫌がらせに苛立ちを募らせる第五王子リヒト。 王子だから干渉しすぎるなとハイネに諭されるも、納得できないリヒトは、国の存在自体を否定してしまう…。 さらに尊敬するオーナーの悩む姿を垣間見ることで、自らが進む未来に決着をつける。 王子と家庭教師が、共に歩み、共に成長する王室コメディ第13巻。

はぐらかさないで、先生は何者? 結婚が破談になった第一王子・アインスを心配して、 ハイネと四人の王子は見舞いに行くものの、ローゼンベルクに門前払いをされてしまう。 心配しつつも日々を過ごす中、ブルーノはハイネの部屋で一枚の写真を発見する。 そこにはハイネとアインス二人の姿が…。 ハイネは何者なのか。二人の関係は…!? 王子と家庭教師が、共に歩み、共に成長する王室コメディ第14巻。

先生は、極悪人…!?ハイネの正体…それは国王・ヴィクトールを殺そうとしていた極悪人だった!? ハイネはその真意を語るため、己の過去と4人の王子と向き合うことに…。 そしてその事実に苦悩する4人の王子達は、再び「先生」としてハイネを受け入れられるのか――。 王子と家庭教師が、共に歩み、共に成長する王室コメディ第15巻。

第一王子の王位継承を阻む秘密。 第一王子・アインスは、なぜか誰とも会いたがらず、自室へこもる日々を送る…。 そんなアインスの状態に悩みを抱えるローゼンベルクは、心身に限界が訪れ、宿敵ハイネの前で倒れてしまう。 自分の力ではもう何もできないのかーーそう思い始めたローゼンベルクは、ハイネと4人の王子の力を借りることを決意する。 そしてアインスの部屋に乗り込むも、そこに姿はなく…? 王子と家庭教師が、共に歩み、共に成長する王室コメディ第16巻。

次の王の座は誰の手にーー!? ハイネの教えにより、様々なことを乗り越え、成長をとげた4人の王子達。建国記念日とその式典を控えたある日、父である国王ヴィクトールに呼び出される。なんと次期国王を指名するというのだ。しかも建国記念式典で各々スピーチを行い、そのスピーチの出来も次期国王を決める判断材料にすると告げられる。スピーチなどしたことがない4人の王子は大慌て!ハイネの教えを元に奮闘するが、果たしてどうなる!?そして次期国王は誰の手に――。王子と家庭教師が、共に歩み、共に成長する王室コメディ堂々の最終巻!