Within a Hollow Heart - Chapter 136: Volume 2, : "The Path of Ruin"

To [Player]: This is the mystery of life and the journey of all things.

You will be stronger, become superheroes, and even touch the power of gods. But if it fails, it is death.

Because you have embarked on the evolutionary game of the highest sequence!

“Isn’t this just embarrassing Darwin?” Li Changhe murmured as he looked at the [player] who came from a distance: “It also embarrassed Newton by the way.”

Don’t spray if you don’t like hot blood

- Description from novelbuddy

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.

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

Julietta, born as an illegitimate child of a nobility, is raised in an opera theatre to hide away from the eyes of the noble’s main wife.