Updated by chance
—The male protagonist's perspective:
I have a sweetheart.
I also have a secret about her.
You must not let her know this secret, otherwise she will be angry.
In that case, she would be the same as when she was a child, angry and blushing, very similar to the red lantern that often hung at the gate of the Marquis' mansion.
Yeah, very cute too.
I wouldn't tell unless she asked me.
Because... She's a ghost.
The cutest ghost in the world, bar none.
—The heroine's perspective:
I am a book girl, the system told me.
But when I woke up, I had become a very special ghost.
My memory jumps back and forth between reality and books.
I thought this was just a book and I was just a spectator.
When the time is up, he naturally takes off and leaves.
However, General Zuo Wuwei was "my" uncle and a hero who protected his family and country, but he was wrongly accused of being a traitor and collaborator.
I'm not willing to accept it, and I don't believe it either.
I want to save him.
So I joined forces with my mortal enemy.
Note:
The heroine will regain her memory and body later (highlighted)
Prince's Crown Prince × Daughter of the Marquis' Mansion
Intention: Heaven's principles are clear, good and evil will be rewarded