The Main Characters That Only I Know - Chapter 343:

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.

After recently taking on the job as the President of Jing Sheng Group’s assistant, she is reports to the president, that has also just taken office, for work.

“Tomorrow morning, postpone all the meetings. At 9 o’clock, follow me to the civil administration office to receive the license.”

On the first day of work, she already encountered an overbearing president that is forcing her to receive the license. Should she resist or obey?

At night, a certain someone leans on the edge of the door, saying in a light and lazy manner: “Madam, I want to turn off the lights. Are you sure you want to go to sleep wrapped like a steamed dumpling while holding a knife?”

“Either that or you can go out to sleep!”

“Impossible, this is my home!”

“During the day, you transferred the house to me. So now it’s my home!”

- Description from Novelupdates

Han Yoona, reincarnated into the novel 'The Golden Heir' as the heroine of the novel and she lived her new life without complaints… until she’s killed.Her story should have ended there, but Yoona’s soul wakes up in the body of Luzia de Cazadores, the daughter of the kingdom’s most feared villain, Duke Ramiro de Cazadores.Yoona expects a cold, calculating tyrant. What she gets instead is something entirely different.“The author left out crucial details. Too many.” Yoona thinks, trying to figure out how he became the feared villain of the kingdom.As she gets to know Ramiro, she begins to realize that everything she thought she knew about Ramiro might not have been the full story.“Alright then, forget the plot or trying to rewrite everything. I’ll just grant the original Luzia's wish…”But with rival nobles plotting against them and the kingdom still fearing Ramiro’s so-called villainy, To protect her new family and escape the traps of a story she thought she knew, Yoona must outwit it to prevent the original story's outcome.

He lived from BC to the Middle Ages, from the Renaissance to the Industrial Revolution, and from Cyberpunk to the Interstellar Age. He has been a king and a prophet, a knight and a nobleman, a versatile artist, a genius inventor…
This is a four-thousand-year human epic——
“To us four thousand years from now:
“Is the world at peace? Is famine extinct? Can people touch the stars? How long is the human lifespan? How far is the boundary of the earth? Human…do you remember us?”
——Excavated from Earth Age Tenth Century BC, Solomon Prayer Book.

- Description from novelbuddy