Mujikakuna Tensai Majutsushi wa Nonbiri Kurashitai

Flair is the youngest magical artisan to ever be appointed to the royal court... and she's under constant harassment from her superior who leaves her with so much work that she almost never gets to go home. The one person who has been there for her, her fiancé, also suddenly decides to call off their engagement, leaving her at rock bottom. However, after coming across the second prince of the kingdom caught in a terrible curse, everything changes. Flair helps him fight off this curse, but the only way to remove it is by finding who exactly casted it...

(Source: MangaPlaza)