Shiitagerare no Majutsushi Reijou wa, "Hyourou Saishou"-sama ni Dekiai sareru

Sophia, the daughter of a marquis, was engaged to the second prince, Delm. Both of them worked at the Royal Institute of Magic Research, but Delm often pushed his work onto Sophia under the guise of their engagement. One day, Sophia invented a new type of magic, but Delm stole her research paper and registered the magic under his own name. When Sophia demanded her rights back, Delm refused and falsely accused her of lying about the theft. As a result, Delm was celebrated as a genius within the institute, while Sophia was ridiculed and labeled incompetent for failing to produce any results. Her reputation as a researcher was ruined, and her only cherished laboratory was taken away by Delm. To make matters worse, Delm declared their engagement annulled, stating, "Someone as incompetent as you isn't worthy of being my fiancée." Devastated, Sophia returned to her family estate, having lost everything. However, through a twist of fate, she became engaged to Leo Santorina, known as the "Ice Wolf Prime Minister" for his cold demeanor. Despite his reputation, Leo was kind-hearted but awkward in expressing himself. With his love and support, Sophia gradually succeeded as a researcher. Meanwhile, Delm's downfall began to unfold...

(Source: Magazine House, translated)