Please recommend some time-travel novels with the theme of killers, agents, and mercenaries, and the content has a romantic plot.

1. If the male lead is the main attacker, there is no limit.
2. Don't want a little white text. Scholars had to see it clearly.
3. The male lead must first mature. I don't want to be too naive
4. Please bring the introduction. There was no need to connect. Please bring the name and author along with a brief introduction.
5. Business tycoon, company president, mafia boss, assassin, agent, mercenary, spy
6. I don't like male leads who are too indifferent. Moreover, he had to understand the ways of the world.

Answer 1

Let me recommend a few novels for you:
1. "Special Agent: Qingcheng Concubine". The protagonist was the most powerful special agent of the 21st century. After transmigrating, she became his concubine and the two of them were entangled.
2. "Peerless Edge: The Third Miss of the Secret Service". The female protagonist was the third miss of the Mo family. She transmigrated and became a good-for-nothing in one day, but she was unwilling to be ordinary and used her own ability to counterattack and succeed.
3. In "The Two-Faced Prince's Special Concubine," the female protagonist was a 21st-century secret agent. After transmigrating, she became his prince. The emotional entanglement and story between the two.
I hope you like my recommendation. Muah ~