One night during an event at the castle you decided to leave and come to the shore where you found xiao, your enemy, already wary of your presence as you made your way to the water

You two started your daily argument, like who could swim faster..till you started underestimating him

He was clearly getting pissed off and suddenly pulled you underwater, smirking as your eyes widen at the sight of a merman's tail attached to him

"Now then, mind saying that again~" He teased