MTL - Omni Genius - Chapter 3109 The first enemy!

Xue Xi is forced to fall in love at first sight with this dangerous man on their first meeting. With death being the only other option, she makes the first move:

After a shocking reincarnation, our hero opens her eyes to a new (and messy) world the last thing she remembers is reading Lady Viper’s Vow, a dark fantasy novel about a cruel, misunderstood villainess and her path of doom. But when our protagonist finds herself reborn right in the heart of an attack, she’s moments away from a second, way-too-soon death. Just as she’s about to face the end, a mysterious “system” pops up with a single mission: Level Up or Die Trying. It’s bossy, snarky, and her new best friend. As she levels up into a borderline-cheater powerhouse, she discovers her fate isn’t to be a hero, a princess, or even a sorceress, but to protect the one person no one ever expected her to side with: the villainess herself.

In her past life Gu Wei Wei’s heart was dug out by the man she loved, and transplanted into her best friend’s body. However, after rebirth she become Hua country’s number one conglomerate, Fu Han Zheng’s little girlfriend. She is being careful trying to take revenge against the people that hurt her. He protects her everywhere, pamper her to the extreme. Everyone said that Fu Han Zheng is cold and without emotion. That perfect husband that everyday tease her until she blushes and her heart beat, pamper her regardless anything, is it a fake husband?

“Jiang Yu transmigrates into a novel and becomes a side character in the book.