Martial King's Retired Life - Chapter 8Book 16:

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!

- Description from Novelupdates

Gong Yu, a three-good student who entered the unknown world for no reason, became a sick and poor little Highness who disguised herself as a man.

In line with the principle of hard work and progress, I work hard to be a two-headed grass and survive in a mixed court.

However, she accidentally picked up the handkerchief of the future queen and sister, and returned it with the good character of picking up gold.

The result was a series of such rumors.

Since the love is compatible, the two are in love, and they are secretly in love, why not choose another day to get married?

Gong Yu herself expressed panic, but the queen sister actually acquiesced.

Content label: A special liking for fate encounters through time and space sweet text
Search keywords: Protagonist: “Gong Yu”, “Dai Ruyan” ┃ Supporting role: “A lot” ┃ Others: “A lot”

- Description from novelbuddy

The third young master of the Gu household, Gu Ye, had a wooden personality, a stuttering speech, couldn’t remember an answer after being told ten times, didn’t dare to protest after being bullied, was considered the shame of high society. His father, in a fit of anger, sent him back to the old home in the country for the new year. But unexpectedly, he came back like a new person, in half a year testing into the top university of the capital with the highest score in the whole school.

You thought being reincarnated as an extra-side character was bad? Imagine being thrown into the body of a villain who is disowned by his own family and discarded by the author.