Naruto: The Outsider's Resolve - Chapter 3.21 (080):

Gu Jin crossed into a novel as the supporting character and best friend of the main female lead, Cheng Xin.

Cheng Xin was frequently surrounded by men of status and quality. As Gu Jin was the female lead’s dearest friend, she doesn’t mind settling for the leftover meager soup if the female lead chose to eat the meat. The two sisters believed they’d enjoy this friendship for a lifetime.

But just as she was ready to latch firmly unto Cheng Xin’s golden thigh, she discovered the body she crossed into had memories of future events beyond the novel’s plot, finding out that her marriage would end in utter failure.

The female lead, Cheng Xin who often quarrelled with the male protagonist would head over to Shao Chong for comfort even though Shao Chong was married to Gu Jin. And after several incidences, Gu Jin advised Shao Chong to have a sense of propriety as her spouse but he told her not to think too much about it, claiming that he only maintained a pure friendship with Cheng Xin.

On the day Gu Jin was kidnapped, her good husband stayed by her cousin’s side and accompanied her to the hospital.

When Gu Jin transmigrated into this new world and learned of the truth, she did not wish to waste this new life as a supporting role for her cousin as the previous soul had done. She’d not live a life as a spectator in someone else’s love story. No. She would be the protagonist of her own romance in this new life.

- Description from Novelupdates

In the second year of marriage, Yvette Thiel was pregnant.Yvette was full of joy, but she got a divorce agreement.In a car accident, Yvette lay in a pool of blood and begged Lance Wolseley to save their child, but Lance left with his sweetheart in his arms.Yvette was disheartened and slowly closed her eyes.Later, it was heard that Lance from New York had a taboo name, and no one could mention it.At the wedding, Lance suddenly went crazy. He knelt on the ground and looked at the cruel woman with red eyes. “You are pregnant with my child. Who do you want to marry?”

I found myself inside the bleak BL novel Silence, where both the protagonist and the antagonist perish. And I became the oppressed omega, Seo Heemin, who tries to escape, ends up breaking his ankle, and even suffers a miscarriage. As expected, as soon as I come to my senses, I am sold to Cha Yiheon, who harbors a deep grudge against the original protagonist. “Why don’t you hit me?” “…Do you want to be hit?” Fortunately, he is a revenge-driven character who loves Seo Heemin dearly. To return to reality, I have to gently seduce him and achieve a happy ending. *** “Hyung, it’s Heemin.” —…Where are you now? Are you crazy enough to want to die? The raw emotion of his anger was palpable. His rage was at its peak, more intense than ever. But, as I had expected this reaction, I calmly responded to him. “I’ll be done with my appointment in an hour, so come pick me up. Let’s go on a date at our lake park.”

Lian Xi transmigrated into an ancient tyrant’s general essay and became the female supporting role of a wealthy family of the same name.
The female supporting actress has a beautiful appearance and a prominent family background, but she was forcibly demoted by the plot. Whenever the male and female protagonists need emotionally, she will be pulled out to do things, and she will be slapped in the face again and again, a proper tool person.
Lianxi: I’m sorry, I have money, looks, and figure. Whoever loves this wise female partner will be the one, and I will say goodbye.
System: If you don’t complete the [Vicious Female Supporting Team] quest, you will die.
Designated line 1: [You are also worthy of me to grab a man]
Lian Xi was driving a Ferrari, and a drifter got off the car and sneered at the boss who was confronting the villain: “You are also worthy of me to grab a man.”
President: ? ?
Opposition:  …
Designated line 2: [Look in the mirror without urinating]
Lian Xi rushed over with a group of bodyguards and pushed away the boss who was hugging the heroine and kissing him: “Be a hooligan, don’t pee and look in the mirror!”
President: ? ? ?
Mistress:  …
Designated line three: [You think you can beat me]
Lian Xi was mad, so he directly bought the Oriental Pearl LED advertising screen and played it on a loop: “Oh, Mr. Ba, do you think you can beat me?”
President: ? ? ? ?
After finally crushing the original male protagonist, Lian Xi completed the mission of the vicious female supporting role.
System: Congratulations to the host, the master mode has been successfully activated.
Lianxi: Huh?
She took a meaningful look at the villain with eight-pack abs lying on her bed, lit a cigarette afterwards, and threw 500 million: “Sign this contract and let me sleep for five years until I become pregnant with an heir.”
The villain laughed so innocently: “Want to fuck me?”
The original hostess: We always want you to look down on you, don’t know what to do!

Content tags: rich and powerful family system wear book cool text
Search keywords: Protagonist: Lian Xi ┃ Supporting role: Hengkong ┃ Others: Pre-received “The squeamish concubine wears a book”
One sentence introduction: drag sister online, kill the Quartet!
Purpose: Sisters and sisters stand up

- Description from novelbuddy