MTL - I! The Villain Licks the Dog’s Father, Specializing In All Kinds of Protagonists - Chapter 19 Help me lick my feet clean, and I'll protect your family of three...

Xue Xi is forced to fall in love at first sight with this dangerous man on their first meeting. With death being the only other option, she makes the first move:

As the head disciple of the number one sect in the world, Luo Jianqing had a brilliant reputation. He was the most respected senior brother of his junior brothers and sisters: the last disciple of the cultivation world’s number one cultivator, Luo Jianqing greatly respected his master’s teachings, not crossing his limits by even half a step.

Afterwards…… he was stabbed to death just like that by the main character with his sword. His master’s sword.
Luo Jianqing: “……”
The heavens wants me dead, yet I refuse to die! See if the will of the heavens is more fearsome, or if the will of my sword is more stubborn!

Wu Yin: “Jianqing, I have something to say to you.”
Luo Jianqing: “Master, I also have something to say to you.”
Wu Yin: “… you speak first?”
Luo Jianqing: “You speak first.”
Wu Yin: “I like you.” / Luo Jianqing: “I want to top you.”
Wu Yin: “……”

- Description from Novelupdates

“The Fang family had two daughters. Their youngest daughter, Fang Yan, was known for her beauty. Rumor had it that she was indescribably beautiful. However, the eldest daughter of the Fang family, Fang Liu, had a low IQ since she was young and only started to speak when she was eight years old. Her parents regarded her as a burden while the outside world treated her as a laughing stock.

However, no one knew that Fang Liu was an ultimate prodigy whose intelligence merely developed late. Afterward, Fang Liu got pregnant for no reason. Four months into her pregnancy, her parents forced her to marry the richest man in South City, the Mo family. Rumors had it that her husband was an old man who had been paralyzed in bed since the age of seven. Unexpectedly, when Fang Liu married into the Mo family, she found out that not only was her husband not an old man, he was also extremely handsome.

He was the Young Master of the Mo family that everyone admired—Mo Yu! Moreover, Fang Liu’s child was not even Mo Yu’s, but Young Master Mo did not seem to mind? Mo Yu even declared in front of everyone, “”Although the child isn’t mine, the wife is mine!”” Everyone else, “”Young Master Mo is too honest!”” After Fang Liu got married, Young Master Mo doted on her so much that even she was moved. She had found a great stepfather for her child! A few months later, Fang Liu looked at her newborn’s face and it nearly felt like she was looking at a miniature version of Mo Yu. Fang Liu, “”Didn’t you claim that the child isn’t yours?”” Mo Yu shrugged. “”I was just spouting nonsense.”” It turned out that there was no such thing as the right person at the right time at the right place. It was all premeditated. “”It’s because I love you that I’ve tried everything I can; I endured all the criticism for my only wish is to have you as mine.