Sharp-tongued but soft-hearted, tsundere, and loyal at first, then a possessive, unhinged obsessive later
Ming Yan makes a deal with Lin Xie. Ming Yan agrees to help Lin Xie pursue his boss. In return, Ming Yan can ask Lin Xie to do one thing for him.
Lin Xie asks Ming Yan, "What do you want, A-Yan?"
"Have you decided?" Lin Xie sees that Ming Yan is lost in thought and leans closer to ask.
Ming Yan replies calmly, "I haven't decided yet. I'll leave it for now and tell you when I do. You can't back out then."
Lin Xie agrees without hesitation.
Lin Xie never imagined he would pay such a painful price for that verbal agreement.
Theme: Move forward together.