I don't know where the love started, but it goes deeper and deeper.
Xiao Youxia always thought that Zheng Xuanyun was his most important friend and the most important companion around him.
When he realized the position of Zheng Xuanyun in his heart, he realized that he had developed a deep love for him at some point.
The friendship between childhood sweethearts, the youthful throbbing in school days, how on earth should we go before we can become lovers and become forever.