Luo Qi Qi --- Zhao Jin Mai
Born into an ordinary family, Luo Qi Qi was sent to live with her grandfather from a young age due to her sister's birth. Her grandfather showered her with love, which contributed to her stubborn and willful personality. Since she started school, she has been rebellious, refusing to be disciplined and sensitive, with a hint of inferiority. From elementary school, she had a secret crush on Zhang Jun, a wealthy young man. They were together in high school but eventually broke up. She went on to attend Tsinghua University and, after graduating, moved to the United States.
Xu Xiao Bo --- Bai Yu Fan
Luo Qi Qi's close friend and childhood companion was framed and deprived of the opportunity to attend college when they entered high school. In order to not hold Luo Qi Qi back, they ended their friendship. However, they secretly protected her from the shadows. Many years later, driven by their past promise, they opened a bookstore. They awaited the moment when Luo Qi Qi would return from the United States, and that's when they would reunite once again.
Zhang Jun --- Wu Jia Kai
Luo Qi Qi's first love, who studied together with her since elementary school, came from a wealthy family. He had a crush on Guan He during primary school but developed feelings for Luo Qi Qi in junior high. They started dating in high school, and he became motivated to study hard in order to keep up with her. However, they eventually broke up. He always believed that Luo Qi Qi didn't love him, until many years later when he discovered a secret from a lucky star. But by then, it was already too late, and they had missed their chance.
Guan He --- Zhao Zhao Yi
The perfect "goddess" in the eyes of others has been outstanding since childhood, the person Luo Qi Qi has always wanted to become. After breaking up with Zhang Jun, she became good friends with him, to the extent that Luo Qi Qi misunderstood their relationship all along. When the truth was finally revealed, Luo Qi Qi and her became good friends.