The Main Characters That Only I Know - Chapter 380:

A Miao’s first impression on the male protagonist: a psycho and pervert who always attempts to make physical contact with her through unrighteous means.

Shen Xinglan’s first impression on the female protagonist: dunno.
A Miao, a street burgler, ran into Shen Xinglan, a billionaire in S City. Who would’ve thought that they would start a beautiful, romantic love story with ups and downs?

Shen Xinglan came back from a kill-training base on a distant island and started a successful career as a businessman. Along with numerous incredible helpers, can he manage to resist the plots and schemes against his enemies in his family? Does he have more secrets? What’s the untold stories of A Miao’s mysterious background?
Join their journey!

- Description from Novelupdates

Ian Percus, the second son of a countryside Viscountcy.

One day, he received a love letter from the future.

‘If we don’t protect the future, the world will perish.’

With an ominous warning scribbled by someone

After her parents had both died in an accident, she had to sign an agreement with him to save her family's company.

It was stated in the agreement that he would save her company on the condition that she would allow him to do whatever he wanted with her.

Just because she resembled the woman he had once loved, he had toyed with her a million times and tortured her in every possible way.

He humiliated her in front of others and then abandoned her. She had loved him, but had suffered.

It wasn't until the agreement expires that she finally ran away from him. By the time she left, she was already pregnant.

A few years later, she brought her adorable child back and became strong and cold-blooded. When they met again, he doted on her so much …

Leon and his father, Artorias, are the last remaining scions of a once powerful and illustrious family of lightning mages. After barely surviving an attack that destroyed their home fifteen years ago, they now live in the dangerous Northern Vales, a desolate wilderness far away from civilization. But those who want them dead are strong, patient, and relentless, and it is only a matter of time before they find the two they seek...