Which romance novels would look for a male protagonist who was an assassin or a secret agent, and had to sneak into the school?

😋I recommend the following two novels to you: "City Cultivation: The All-rounded Student Scum": The male lead was a student scum, but after cultivating with the old man, he became an all-rounded expert. He sneaked into the school, became the school belle's bodyguard, ventured into the entertainment industry, mingled in the martial arts world, and led the special agent organization. "After Rebirth, the Secret Agent's Daughter Turns the Scene": The female protagonist is a killer. She is reborn as an ordinary student. She spreads her wings and flies for nine days to find the guy who shot her from behind. The pretty boys were all stunned by her looks, but she cared more about her ability. I hope you like this fairy's recommendation. Muah ~😗