When I Left, He Found His Way Back - Chapter 3: Divorced

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.

This is the stories of two different people from two different worlds (literally)

She was raised in love, while he was raised in hate

Her birth was celebrated, while he was despised

She was protected, while he was abused everyday.

She is gentle, warm and kind, while he is cold, cruel and vicious

But with the twist of fate, their world collided. They will learn from each other.

He will teach her to be hopeful and live for herself, while she will teach him the joys of Friendship and Love

Together they will learn to understand each other, accept each other and love each other, and soon their love will change the fate of the world

Princess: Can you stop staring at me while I'm sleeping?

The Lord: I can't…

The Princess: Are you gonna stare at me the whole night?

The Lord: Yes!

The Princess: Can you at least act like a normal man who will take advantage of a maiden while in her room.

The Lord: …this Lord would oblige

The Princess: WAIT… This princess is kidding, just kidding, wait…!

I became the Heavenly Demon’s dog.

After choking to death on a watermelon, Rong Jiahui thought that she would enter the netherworld and be reincarnated.

But when she opened her eyes, she discovered, to her very horror, that she had returned twelve years into the past…

Looking at the beautiful and awkward “little brother” that would be conferred the title of Marshal in the future for outstanding military service, she almost let out a snort of laughter.

She firmly decided to hug the thigh of this little brother, and climb to the top of her life!

The plan was beautiful, but it had just one problem.

Why had this little brother… suddenly turned into…

A little sister…

- Description from Novelupdates