Your Royal Highnesses, gentle 1ⅹ tsundere 0.
Xu You: "Why should I, the majestic Crown Prince of Xu Kingdom, be suppressed by you?"
Lin Wan: "Your Highness, you agreed to it that day under the White Tower."
Xu You: "... That's me! Me!... I don't know! Don't talk nonsense!!"
Lin Wan: "Your Highness, a horse is hard to catch."
Xu You: "..."
Lin Wan: "Since you have promised me, your love will last forever."
Concept: Tenderness is the beginning of love