Toshishita Oji No moAi Ha, Maryoku Nashi No Watashi Shika Rarenai Mitaidesu (Noche) [Light Novel]

[Machine Translation] Adeliza is called "a magician without magic" because she is an excellent researcher of magic, even though she has no magic power. But when her sister, who has an abundance of magical power, cuckolds her fiance and even takes her job, she suddenly finds herself on the precipice of life! She wants to go away... Then she receives an invitation to become a live-in governess for the third prince of a neighboring kingdom, Prince Rubeld. Adelaiza takes the plunge and heads straight for the prince, but what awaits her there is a handsome prince with no manners at all! Moreover, he is a magic researcher without magic power just like Adeliza. The research of Rubeld is to develop a "medicine to regain magic power," but the medicine has an unbelievable side effect...

魔力を持たないにもかかわらず、優秀な魔術の研究者として「魔力持たぬ魔術師」と称されるアデライザ。けれど豊富な魔力を持つ妹に婚約者を寝取られ、おまけに仕事まで奪われて、突然人生崖っぷち!?ああもうどこか遠くへ行ってしまいたい...そんな彼女に、隣国の第三王子ルベルドの住み込み家庭教師にならないかという誘いがかかる。渡りに船と早速王子のもとへ向かったアデライザだが、そこで待ち受けていたのは傍若無人なイケメン王子様だった!しかも彼は、アデライザと同じ魔力なしの魔術研究者。そんなルベルドの研究は「魔力を取り戻す薬」の開発だというが、その薬にはとんでもない副作用があって―。