It's about a professional killer, and the heroine is an adopted orphan. Can you recommend a modern novel?

Seeking a modern novel, the male protagonist is a killer, the female protagonist's parents are killed, and she is adopted by someone else.
When the male protagonist was young, he went on an assassination mission. He found the female lead in the closet and found that the female lead was like an angel. Years later, the male lead found the female lead at a blind date party. So the female lead had been adopted by someone else. The male lead wanted the female lead, but he had a girlfriend. Later on, the two of them seemed to have gotten married. The female lead even shot the male lead.
The male lead's braid is very long

Answer 1

I recommend the modern life novel," The Emperor's Master's Son-in-law." The male lead, Xia Kunlun, was an assassin. The female lead's parents were killed and adopted by someone else. Xia Kunlun was also very young. The plot of the novel revolved around Xia Kunlun's revenge. At the same time, there were some family emotions and emotional entanglements. I recommend this novel to you. I hope you like it.😘