MTL - My Senpai Knows Magic - Chapter 189 one's own

Zhu Kang, a trafficked soul, was captured by an evil organization and was stripped of his real memories. Unaware of the dangers he worked for this evil corporation as a system.One day, all of a sudden, fifteen men dressed in black started a shoot-out killing all the other systems.In desperation, Kang threw himself into a transmigration device that tossed his soul into a random world.“System 202 has escaped.... a-again.....” one of the black-clothed men said. Trembling, he glanced at their team leader.Kai Alden gritted his teeth. “You let him slip away so easily! Send me into that world. I will capture my dear System and bring him back here,”

“From today onwards, you will become the Envoy of one of the Main Gods in the Dimensions of Gods. You will travel from one world to another and through that, you will attain what others will never obtain in their entire life.”

The moment these words echoed in Fang Li’s head, Fang Li’s life was destined to be extraordinary…

- Description from novelupdates

Zhong Yuhuan had transmigrated into a book and became the female supporting character who was destined to die an untimely and tragic death. Coincidentally, her family adopted two boys — the male lead and the villain of the book! The male lead of the book would become a superstar in the show business and the villain a super successful and powerful businessman. Zhong Yuhuan thus began her life of raising the male lead and the villain while faceslapping other scums. She would grow up quickly and live the life of the rich and powerful Mary Sue!

To be exact, the female lead is an “older sister” type, amid many beauties and handsome guys, she's no white lotus.Also, it's said that the name of this book is the same as a brand of sheep's milk powder.