- Male protagonist: Shen Zhi - cold on the outside but hot on the inside, withholding deep affection, arrogant and loyal dog attributes, in the early stage he was the proud son of high school, taciturn and unsmiling; he came back gorgeously after 6 years and became a powerful business boss, decisive and tough, with extreme possessiveness and obsession with Lin Mian. He seems to be cold and abstinent, but in fact, he will reveal soft emotions such as grievance and jealousy in front of Lin Mian. He has been paying attention to and missing Lin Mian silently for many years. He has a grudge because of the breakup that year, but he has never been able to hurt her. He is a loyal dog-type male protagonist who "eats soft and hard", and only makes exceptions and favors Lin Mian.
- Heroine: Lin Mian - Warm and free, indulgent and cute, a bit "heartless", Bai Fumei, who is pampered by her family, is as lively and agile as a "cat in the world". In high school, he dared to love and hate, and took the initiative to pursue Shen Zhi; his personality seemed carefree, but in fact he was sensitive and insecure. At that time, he mistakenly believed that Shen Zhi had no affection for him and could not feel the response. Coupled with the influence of trivial family matters, he took the initiative to break up. After the reunion, they seemed calm and indifferent, but in fact they had not really let go of Shen Zhi. Facing Shen Zhi's toughness and tenderness, they gradually dropped their guard and learned to love and be loved again.
