MTL - I Don’t Want To Go Against The Sky - Chapter 492 Maybe this is fate

Bai Aoxue, the best mercenary in the 21st century, is accidentally sent back to the Chengxi Dynasty in Great Continent due to an explosion in her mission, and trapped in the first daughter of Prime Minister. After her rebirth, she is set up by her father to marry the 5th prince Jun Yeyan who wears a mask all day long.
In the face of bloodthirsty enemies, discord between brothers, collusion among courtiers and invasion of enemy state, can Bai and Jun resolve the crises? What will happen to their political marriage? How will the fierce battle for the throne end?
With many twists and turns, the book brings you to experience palace revolution, love and hatred thousands of years ago.

- Description from Novelupdates

Su Ran, a music prodigy, woke up transmigrated into a book.

At that point in time, the main story arc in the book had already been completed. As a villainess female supporting character, not only did she need to take over the original owner’s pitiful life in poverty, she also gained an instant son right at his rebellious period.

Ten or so more years from then, the son would turn into a twisted, evil villain. He would appear in one of the extra chapters to pick on the male and female lead’s children.

***

Su Ran: Son, you shouldn’t be too outstanding.
Su Han: Why not?
Su Ran: ’cause you will be killed.

Su Ran: Son, would you like to learn music from me and become a zen, little fairy boy who only needs to drink dew.
Su Han: No, I want to go into business so I can support you.

- Description from Novelupdates

She was drugged by her ex-boyfriend and had her first night with a mysterious man.

[Ding! You have extracted the Dragon Empress’s unborn child. Do you wish to claim it as a pet?][Ding! You have extracted all the impurities from the Starlight Sword. Its rank has been upgraded from Epic to Legendary!][Ding! You have extracted the skill: Lightning Judgment Lv100.][Ding! You have extracted the unique Class Blood warlock!]…After dying at the hands of the God of Destruction, Gabriel found himself in the body of an insignificant character in the game Realm of Ascendancy, before its launch and convergence with reality.Witnessing the world being obliterated before his eyes, along with his friends and family, Gabriel swore to make a difference in this timeline.Armed with the God-tier Extraction Talent, follow him as he uses his knowledge of the game’s future to manipulate both NPCs and players, turning them into powerful lackeys who will lay down their lives for him without hesitation.And all he needed to do was fulfill the unique condition set by the mysterious goddess who granted him a second chance.“The skills of those you kill? Yours.”“Their strength, their talent, their souls? Yours.”“Their loot? Yours.”“Their class? Yours!”“The resources of the universe? Yours!”“Their experience points? Yours!”“You will devour the power of the strong and rise beyond the heavens.”“Kill, KILL, KILL, KILL! Kill everything that blocks your path—monsters, humans, gods, whatever! Slaughter them and extract!!”