I Reincarnated to Another World as a Woman - Chapter 3: Montrose Reunion

Lyle Walt is a young noble boy and heir looking forward to the day he can inherit his family’s territory. Except around when he was 10 year old, his parents started neglecting him more and more in favour of his little sister, Celes.
On his fifteenth birthday, he is challenged to a duel by his sister to see who will inherit the household and horribly loses, being cast out of his family. Afterwards, he gets treated by the family groundskeepers and receives the family heirloom Gem from him that Lyle’s grandfather had entrusted to him. From there, he begins an aimless journey with his childhood friend and former fiancée, Novem, and the Gem-turned-Jewel that houses the memories, personalities, and Skills of seven of his ancestors.

One day, as usual, Annabelle remembered the memories of her previous life.

It was revealed that she has been reincarnated as the second most popular character in a novel.

She also did all kinds of bad things to the male lead, and in the end, she is the person who will end up in prison!

‘In the end, I’ll get caught. It’s crazy!’

Anabelle begins to save Ian from danger by intercepting the conspiracies that were laid out one by one to prevent her impending doom.

But in the process, she caught the attention of some unexpected people…

“Oh my, that’s the spirit of chivalry our family pursues! I like that a lot!”

Ian’s mother’s eyes began to sparkle at her.

“Would you like to be my partner to the opera?”

After saving Ian, the prince keeps flirting…

“Ian, I’ve decided to quit being your rival and live a new life.”

“A new life?”

“To stop paying attention to a man like you who’s always up and down, marry a man with no character, and live a normal life.”

“Who’s the opponent? And why am I up and down?”

The male lead, Ian, keeps obsessing over me for some reason.

“Why do you not talk harshly to me these days…? Do it again.”

Everyone just seems to be a little weird!

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.

Through a mysterious portal, Chen Jin arrived at this strange place – a post-apocalyptic world where civilization had been destroyed.

Consequently, he found –

A piece of metal scrap
A robot trash collector
A battleground
A city
A ton and more of gold
A copy of high-tech documents
A…
In short, Chen Jin found a planet.

- Description from Novelupdates