Rakuin no Monshou - Volume 1, Chapter 5: Princess Vileena

Falling in love with my imposter sister's fiance wasn't the plan. After finding out that she was exchanged at birth and was the real daughter of the Moore family, Eliana was expecting a turn in her life, but nothing changed except that she lived in a big house and could now eat good food. Her parents still ignored her and everything good was first given to Amber, their imposter daughter.She was twelve when she met him, when he saved her from drowning, and when she found out that he already had a betrothed. It was already known that the eldest son of the Sanders family was betrothed to the eldest daughter of the Moore family since birth. She knew this, and it was only natural that she accepted this, but the more they crossed paths, the more she wanted him and the more she wanted more for herself. Eliana was ready to do anything to achieve all her dark desires, even if it made her a villain.After all, there is a saying that goes “Villians are not born, they are made.”

I saved the Warrior who used to ignore and bully me and now she is obsessed with me.

“Married rich for three years with no child born. Just when she was finally cured of infertility and ready to give him a child, he brought home his pregnant mistress in high profile.

“”Get lost if you can’t get knocked up. Or do you want my son to be the last of the Mo family?”” her mother-in-law viciously cursed.

Her husband grimly shoved a divorce agreement upon her face, “”I’ve signed. Leave when you are ready.””
It was heard later that two men went physical in the city plaze of Ye City to win back the wife, with the two babies at the side fighting fiercely for their mom!”

- Description from Novelupdates

The girl who transmigrated threw four-year-old Yu into a snowy mountain in order to change her fate. Fortunately, kind-hearted people took the young girl in. The Wang family was poor, sick, disabled and indebted, But from start to end, they pampered her like a precious jewel. Everyone said that the Wang family picked up a money-losing burden. Sooner or later, they would all end up badly together! Unexpectedly, this little precious doll was a small blessing. Little Yu took out her little pocket and smiled sweetly. Portable spatial pocket, the best spiritual spring, spiritual measurement mouse…

Anything they wanted, Yu had it! An eye for an eye, a tooth for a tooth. This small blessing was incredible. Not only was she a farming expert, but she was also great at business. She even opened a school, sea trade, established a prestigious kindergarten, and even gained the favor of all the staff! Watch as the small, pampered blessing turns the table around and brings her family to the pinnacle of life! The transmigrated girl and the villains were dumbfounded. It looks like they were the ones who missed out on getting the person with a cheat!