I'll Teach You, Marianne. - Chapter 561 - I Love You, My Lioness

Ryu Han-bin, the main character who fell into a new world after being chosen as a ‘suitable person’.

Because of the error in the guidelines, the training is repeated endlessly…

The night before her wedding, her world shattered.Betrayed by her own sister and abandoned by her fiancé, who demanded her kidney as the price for his love, she thought her life was over. But she refused to be a victim.At the altar, she made a bold move: she called off the wedding and declared she’d marry anyone willing to step up. To everyone’s shock, he—the richest and most powerful man in the city—stepped forward, claiming it was his “duty” to marry her.Overnight, she went from a betrayed bride to the wife of her ex-fiancé’s uncle, turning the tables on everyone who wronged her. From navigating family drama to outsmarting scheming rivals, she rose to become the undisputed queen of both families, building an empire of her own.Now, with a thriving career and a husband who adores her, she’s living her best life. But when her husband calls, begging her to come home because their twins are “starving for attention,” she knows her chaotic yet glorious life is just getting started.

In her past life, she had no one to rely on and died alone in jail.

But now, she has been reborn, given a second chance.

Got an heirloom.
Activated a mystical Space Dimension.
Studied medicine and became a genius doctor.
Opened a clinic.
Founded a company.
Bought a house and land.
Found her blood relatives.
Her worth became higher and higher.
Her fan club became bigger and bigger.

“Young master, the Zhao family’s young master faked an illness and went to future young miss’s place for treatment. . .” said a servant.

“Break his legs! Fail his organs! A fake illness? I’ll make him sick completely!” A man said.

“Yes! But young master. . . what are you doing?” The servant said, confused.

The man finished swallowing a bunch of expired pills and said, “I’m sick, gotta go find my wife for some treatment!”

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.