The childhood sweetheart was destined to be a daughter-in-law, but in the blink of an eye she became the bad guy; the male protagonist changed from brother to younger brother, domineeringly announcing: "I am not replacing my brother, I have liked you for a long time." There is a term in mathematics books called asymptote. No matter whether the two lines span billions of light-years, they will strive to get closer to each other. Cheng Nian is full of confidence. She and Gu Yubai have grown up as childhood sweethearts, and their relationship is like an asymptote. But in the midsummer when she was seventeen, at the moment when the relationship was confirmed, she lost Gu Yubai forever. At the funeral, Gu Yubai's brother came to her side. From then on, the unruly and rebellious young man refused to leave again. Nian Nian, even if you and I are not asymptotes, I will fly under the stars to get close to you.
