Under the Oak Tree (Web Novel KR) - Chapter 188

She was an unprecedented assassin, a trump card deadly agent, but transmigrated through into Ye City’s number one prodigious good-for-nothing young miss. I am an ugly woman? I will break out from my cocoon into a gorgeous butterfly that will blind your snobbish eyes! I am useless piece of heap? Lightning in my hands, I will smite you to a well-cooked crisp!Her greed and lust for money had no end. She is lewd to the core with no bottom in sight, sworn to have love fortunes blossom all around her. However, a certain someone holding a blade in the left hand and a sword in the right hand began cutting those love fortunes one by one! The person smiled with perked brows, “Little Ninth, it looks like I have to let you become occupied!”

Gu Mingxi and Pang Qian were next-door neighbors, classmates, and deskmates. From year-to-year, even when the class seating was rearranged, they would still be deskmates. They grew up together like a pair of brother and sisters despite having different parents; if it was someone else, then their parents would probably have already arranged their wedding. However, Gu Mingxi was different.

Five years ago, Gu Jiayu, who climbed out of the mountain nest, entered the entertainment circle in order to cultivate, and in order to overcome the shortcomings of emotional gaps, he used an excellent acting skill to hook up a Chinese “little nobleman” abroad. After a month of falling in love and feeling love, he ran away with guilty conscience after the other party proposed marriage.

Five years later, Gu Yingdi had become popular all over the country, but he had a four-year-old son beside him. 

One day, the little handsome guy pointed at the man who took up the entire page in the financial newspaper and said, “Dad, this man looks like me!” Gu Jiayi glanced at the calm, handsome man in a suit and shoes in the newspaper, and asked with a guilty conscience, “He has an onion head, and his body is black and black like the top post. Are you sure you look like him?” That night, “Top Door Post” came to the door … Gu Jiayu, “My son, hide your tail!”

- Description from Novelupdates

This is a rebirth story of a normal girl, Kylie. She was a normal girl, living a normal life. Married and had kids. Nothing outstanding about her, but nothing terrible either. Then she was attacked and left to die.

Her soul screamed in pain at having to leave behind two small children that needed her, yet she couldn't do anything. As she entered eternal darkness ... it took her some time to realise that she was not dead. She was alive, only yet to be born.

And she was a boy.