She is the heir to the Ximen Consortium among the Sifang Consortium. Because of an encounter when she was a child, she was willing to be his personal bodyguard. Even though she knew he loved another woman, she still wanted to stay by his side. Perhaps like the mermaid princess in fairy tales, her tragedy was doomed from the beginning.
He is the young master of Longmen. Although he knows her love for him, because she is not his ideal wife, he has to pretend not to know because she is his most important subordinate and he does not want to lose his most capable assistant.
However, the gears of fate will not stop turning just because of what they think. When her eighteenth birthday came, it was also the time when she had to leave him. The shot he blocked for his princess should be regarded as the end. Perhaps, this is her destiny as a mermaid princess.
Probably, you really have to lose it before you know how to cherish it. Only when he lost his most important subordinate did he understand that she was not just his personal bodyguard, but a lifelong partner. Unfortunately, when he found her again, she had forgotten him. It doesn't matter, he will make her think of him, and even if he can't, he will make her fall in love with her again. Who said she is his destined lover? This was already determined in their previous life.