[Mutual chastity + love and hate intertwined + the aloof beauty falls from her pedestal + anti-abstinence... powerful minister / mad eldest princess]
She was imprisoned for ten years, all because of his so-called concern for her best interests.
Now the former emperor is dead, and the first thing she does upon returning is lock him in a prison cell.
He gets rescued? No matter.
She sends another woman to attend to him instead. Furious, he leaves in a hurry after saying,
"Do you think this will humiliate me, Your Highness?"
Not interested in women? Pure and pristine?
Impossible. She knows how to use love poisons.
When the poison takes effect, he kisses her and asks in a hoarse voice,
"A Yu, you poisoned me. Don't you intend to take responsibility?"
But what she doesn't know is that even without the poison, he wants to sleep with her.
When she's angry or upset, he tearfully begs her to lock him back in the cell.
Once he gets his wish and they spend the night together, he can never forget how it felt.
To make her feel sorry for him, he cuts his own body with a knife and chains himself up... He plays weak, acts pitiful, and uses every trick in the book.
Her: The plan worked. Love is fleeting, but power lasts a lifetime.
To get revenge on him, she fakes her death and escapes.
During the three years she's "dead," he grows increasingly mad, praying to gods and demons, searching the land for sorcerers and begging for her to be reborn.
Until...