The ten years between Gu Xingyi and Xu Zecheng began with the words "just friends." From the awkward days of high school, to the bustling university campus, and then to the pressure-filled workplace, they tested the waters and missed their chances, yet never truly left each other's lives. It turns out some "friends" are destined to become part of your life from the very start. This is a decade-long journey of love: the tentative steps of a secret crush, the blurred boundaries of friendship, and how two ordinary people come to understand their hearts over time and finally seize the happiness meant for them.