In This Life, The Greatest Star In The Universe - Chapter 36:

Low-level villains: Greedy, arrogant, flattery to the female protagonist, laughing eerily like “hehehe!”High-level villains: Moody, noble, enduring, good at disguising, cunning as a fox, never showing emotions, willing to do anything to achieve goals, exquisite egoists, with an essential charming and handsome face!Chen Zhixing transmigrates into a fantasy world, becoming the Third Young Master of the Ziwei Chen Family, a Longevity Family with villainous roles.Being a villain himself is bad enough, but even his father and mother are villainous characters.Fortunately, he starts off with Heaven-defying Comprehension.Hundred Refinements Golden Body Scripture + Circulation Star Transformation Spell + Ox Demon Heaven-Supporting Skill = Ox Demon Transformation Star ScriptureHeart Sword Skill + Refining Spirit and Transforming Breath Method = Hundred Refinement Divine Weapon TechniqueSwallowing Deity Spell + Transformation Method Scripture = Heavens' Creation TechniqueFission Method + Great Dream Sitting Forgetting Dao = Other Transformation Free-for-All TechniqueChen Zhixing gradually turns a bad hand into a winning one with his Heaven-defying Comprehension!Twenty years later.The Protagonist of Destiny finally arrives before Chen Zhixing.Chen Zhixing smiles faintly, saying, “Sorry, all the people beside you are mine, and all your cultivation techniques were created by me.Surprised? Unexpected?”

The servant looked at the grieving princess. “Your Highness, the Regent Prince sent your scholar fiancé to the Western Butcher’s daughter!” 

The princess gritted her teeth, speaking to her servant that it matters not as she has other suitors in line. Many days later, much to her dismay, the servant ran in a hurry. “Your Highness, the Regent Prince expressed his intention of becoming your suitor! All other men in line were sold to Gou Lan Red District!”

The princess was distressed. She said to her servant it matters not. She’ll soon be married to Prince Fuma. Then the uneventful came. The servant once more ran to her, almost tripping in the process. “Your Highness, Prince Fuma was imprisoned at home! Meanwhile, there’s a red sedan chair waiting at your residence for your marriage! It was led by the Regent Prince!

The princess was stunned. For a day such as this to come, it seemed impossible. This nothing but a sad story of a female boss crossing back in time to hold the thick thighs of the big boss. But while raising him, she was eaten in the process.

- Description from Novelupdates

A normal high school boy with nothing much happening in his life except for...life. Every new day was the same as the one before but he doesn't really care much about it. He thought of himself as a normal high school-going boy with no clear future. Lazy, sarcastic, but kind of intelligent, he was living a normal life.Though fate had different plans for him as he met a girl who he did and did not know. The school princess was the first thing he saw when he woke up in his bed caressing his head. To any other boy in his situation, it would be pure bliss but he was worried.Why?Since she was in his house which he had locked before going to sleep. Little did he know that the girl was more than what she showed and was about to turn his entire life upside down. How will he tackle this situation? No one knows that.

What happens when a scientist from a futuristic world reincarnates in a World of Magic and Knights? An awesome MC is what happens! A scientist’s goal is to explore the secrets of the universe, and this is exactly what Leylin sets out to do when he is reincarnated. Dark, cold and calculating, he makes use of all his resources as he sets off on his adventures to meet his goal. Face? Who needs that… Hmmm… that guy seems too powerful for me to take on now… I better keep a low profile for now. You want me to help you? Sure… but what benefit can I get out of it? Nothing? Bye. Hmmm… that guy looks like he might cause me problems in the future. Should I let him off for now and let him grow into someone that can threaten me….. Nahhh. *kill*-

Alternative: Leylin is transported from an advanced technological era into a medieval world— except there’s magic. Equipped with “only” his quick wits and an A.I. chip fused to his soul, he sets out to become the most powerful magus the world has ever known. In a land divided into the Light and Dark Magi, the weak can either be cattle or disposable slaves. Only the strong can determine their lives, and only they have the luxury for virtue. Yet strength is only a tool for Leylin, like any other. His goal, in the end, is his own.