The Prince and the Knight

Prince Shouto wants to move away from the castle and his father King Enji, who has arranged for him to marry a warrior princess named Momo. He wants to be rid of his fire magic and primarily use his ice, and he never wants to marry a princess, especially this one. Then he meets a knight from the castle named Izuku Midoriya. Midoriya seems nice. He is a very good fighter, with great magic. Shouto feels himself falling for Midoriya. Midoriya agrees to help Shouto escape from his father. He also teaches Shouto that his power is his own, not his father's. The two start going to a school in the rich area of the kingdom, so they can use their powers to become great heroes. They end up falling in love.