Xu Xinzhen: "Only you, Xu Xinheng, are the only people I love at Nine Tails. I'm very happy that you will be the one I choose in the end."
Xu Xinheng: "Xu Xinzhen, you have to keep your word and don't break your promise."
Xu Xinzhen: "I, Xu Xinzhen, have promised and I will never break my promise."
Intent: The story of "love and killing" in the KPL league