I Became The Villain The Hero Is Obsessed With - Chapter 256: Alliance

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

Alicia Rosalyn Von Heist is the youngest daughter of King Edward of Alvannia. She is an illegitimate child born from a maid in the castle her father has fancied. After her mother died when she was young her father took her home and ‘adopted’ her.

“You saved me, to repay you, I decided to devote myself to you!”An Ran just did a good deed casually, but was entangled by this black-bellied, ice-cold face.“No... no need, I'm still young,” An Ran sweat madly inside, waving her hands repeatedly.The man, however, was very serious: “I will wait for you to grow up.”But, isn't your image of throwing a tantrum too unbearable to watch?Didn't you say you were like Cold-faced Yama, aloof and abstinent, with an eight-thousand-meter glacial demeanor?A certain brotherhood wiped a bitter tear and said, what's the big deal about throwing a tantrum? Neglecting friends for love, betraying friends for affection, and always have to be ready to be fed dog food. They just want to ask, such a brother, can we return him?

Let’s fight! Go! Who am I afraid of with a chip that turns into a brain cell? ! Get promoted and get rich! The nest treasures are all mine!

- Description from novelbuddy