Never Marry a Man With Two Tintins - Chapter 16

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.

A 34-year-old NEET otaku, chased out from his house by his family, found that his life is reaching a dead end. He then recalled that his life could actually have been much better if he had made better choices in the past.

Chen Quan Ran is a young general. Rather than return home and see his child wife, Mo Lan, he leads his army in battle for 10 years.

Mo Lan is a gentle bred young lady who has not met her husband Chen Quan Ran since their wedding day ten years ago. Chen Quan Ran’s grandma loves Mo Lan so she feigns illness to lure him home.

Chen Quan Ran can be heartless toward anyone except his grandma who raised him. He returns home and he surprisingly falls in love with his wife who has a secret…

After being reborn she worked hard to stalk and marry her husband, abuse and punish her other scumbag husband, and embark on a journey to reach the pinnacle of life!

—

For the egregious crime of treason everyone in the Xiao House were sentenced to death.

At the execution grounds while waiting for her beheading, she stared at the youth sprawled on the ground in front of her. He had run over so hurriedly he tripped over his own feet, displaying an undignified sight. It made her smile thinking how stupid this person was. She had completely used and taken advantage of him from the day he forced her to marry him. Yet despite all the abuse she heaped on him, he still wanted to save her.

She opened her eyes again only to find it was the day before their wedding. That devious scoundrel… to make her his wife through underhanded methods… The memory of it still left a bad taste in her mouth.

She was going to grab this second chance and live it up! Extort all debts owed to her! Buff herself up and shine like a diamond!

But how was she to know that the husband she once hated was actually really loyal and gentle, soft and easy, and so incredibly sweet and delicious to eat! The shutters that blinded her eyes in the previous life were cast aside. She realized she didn’t know how to cherish the good things in life. So in this new one she was going to make sure to pamper and spoil the hell out of that husband of hers.

- Description from Novelupdates