Aurelia Prévoir-L'Or, daughter of Baron Roskeller, was doing her best for her impoverished baronial family. Because her specialty, light magic, was essential to illuminate the vast royal castle every night, Aurelia received a generous salary.

However, one day while working, Aurelia accidentally stumbled upon a secret meeting between Prince Hugues and Solange, daughter of Marquis Aphria. This incident shook the entire royal castle, and for some inexplicable reason, Aurelia was exiled as punishment.

Aurelia decided to seek work elsewhere. Subsequently, she found a job opening at the Duchy of de Morax, and seizing the opportunity, went to promote her skills to Morgan, the head of the family. Morgan welcomed her, stating that a talent capable of sufficiently illuminating the vast royal castle would be more than satisfactory. Duke Morgan de Morax, naturally weak to sunlight and sometimes unable to even go outside, greatly appreciated artificial light created by magic. Aided by Aurelia's light magic, Morgan began to keep her by his side.

Meanwhile, the royal castle that had expelled Aurelia had become dark.

※This work is also published on other websites.

※Together with the sequel, "It seems my engagement was broken because of me, so I was fired from the castle. ...A Daughter's Story." (https://ncode.syosetu.com/n8952hv/), this work has been decided for publication as a book by Kadokawa Beans Bunko.