My Multisystem In Isekai - Chapter 19 Calista

The handsome Emperor falls in love with a Knightess! Knightess Poliana loses to the Acreian Army and despite her struggles to survive in a male infested military, she is now about to die. But then, the young king of Acreia sees her efforts and tells her: "I have a dream, I wish to conquer the world and become an Emperor, would you like to join me?"

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

“Young man… if you could go back in time, what period would you like to be in?”

A 20-years old boy transmigrated into the female-dominated novel world, But not as a protagonist nor as the main villain.

He transmigrated as the green tea boyfriend of the main female CEO heroine and will become the first target of the protagonist of this novel. Alex was scared for his life. In the novel, it's impossible to defeat the son of luck.

When he was helpless, the golden finger exclusive for travelers came.

[Ding! The Female Raider System is being loaded.]

Alex was excited thinking that he doesn't need to go close to a high cold female CEO but the system tells him different things.

[Ding! As long as the host raids the heroines and increases their affection, the Host will receive heaven-defying rewards.]

So his journey as green tea/White lotus raiding began.