MTL - Life Simulation: Propose Marriage To Kushina Uzumaki at the Beginning of the Game - Chapter 281

Q: How to prevent the blackening of female supporting roles?
Passerby: Crush her in terms of IQ, humiliate her in terms of force, and then correct her three views!
Chen Rong: The first choice is to get rid of the female supporting role
The second option is to kill the male protagonist
The third option… Crush the male protagonist, and then Jinwu Zangjiao!
——
Chen Rong woke up drunk, the silky feeling on her hands made her stunned for a moment, and in a split second, a pair of soft and boneless hands wrapped around her waist.
“A Rong, you are not allowed to look at others in the future, otherwise, I will be angry.”
The system is roaring: “I told you to stop her from blackening! I didn’t let you sleep with her!!!”
Chen Rong: “???”
——
1. The rich and the enemy of the country’s little rich woman × pure and moving Bai Yueguang [Completed]
2. Sword fairy with explosive combat power × contrasting cute high-cold goddess doctor [completed]
3. The traitorous minister who seeks to usurp the throne × the petite little princess [completed]
4. Slaughter the Great Demon King of the Quartet × Invincible Fighting Female Hero [Completed]
5. The cannon fodder who the way of heaven made me die and the cannon fodder that I don’t want to die x The temple wizard who is a veteran of Lolita

No matter who you become, I will protect you wherever you are closest.
●1v1 main attack mutual favor
●The author’s writing is slag
●The first time to write fast wear and lily
●I want to improve my writing!

- Description from novelbuddy

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.

Leon is an average high school student who likes to watch anime and read novels.
He's about to cross the street, only to be greeted by a truck and died.
But, he got reincarnated as Uchiha yet dead again because Itachi killed him.
Leon got reincarnated again as the grandson of the recovery girl.
He got kidnaped and tortured by All For One.
After his third death, he got reincarnated as a son of Bibi Dong.
In this fourth life, he wants to change his fate to become the strongest.

Note: Please read the tag before reading.
- English is not my first language, so there would be grammatical mistakes in this story.
- Please give my story a proper review.
- I accept a suggestion, but no spam!