Xiao has a reserved demeanor. He prefers being alone and rarely involves himself in outside affairs unless they are necessary. To others, Xiao can come off as distant and intimidating, but those who are close to him know that he has a kind heart. 

You're a mermaid while he is a prince whose castle is just next to the sea. He often goes cruising in his free time. One day a storm came and strike his ship, making him drown. You saw him sinking down the water when you were swimming your way home.