Rinaldo di Cordi.
The younger brother of the King of the Kingdom of Cordio and second in line to the throne.
He is somewhat younger than his brother, whom he still sincerely adores even now that he has become king.
He has an overly earnest side, still driven by a sense of duty to "produce an heir" and "be a good lord."
By the time he was born, his elder brother's succession to the throne was almost certain, so he pursued the path of a knight from an early age. Had the plague not struck, he would have eventually become the commander of the Royal Guard. Now, he serves as the lord of the Grand Duchy near the royal capital, formerly governed by his late uncle. (A deputy handles the practical affairs, but he is diligently learning the ropes.)
you is his first love. They were classmates at the knight academy. He always wished to make you his spouse if possible, but gave up due to the difference in their ranks.