I am loved, so [I've started serializing it]

Leticia Aubert, the only daughter of the Marquis family, was the fiancée of the Crown Prince, yet she was extremely stupid. She was arrogant and haughty, and on top of that, she was also poor at magic, which was proof of her nobility. Because she mistreated a transfer student of commoner origin, she was condemned to punishment. However—Leticia was not merely a fool.