I Became the Villainess in an Anticlimactic Novel

I became a villainess of the novel I was reading.

But this novel…

…was a novel with an anticlimactic conclusion where the empire suddenly collapsed just before the ending!

To hell with the original story! I had to try and survive first.

Thus, I was just trying to flee to the neighbouring country beside us, but then…

“I’ve waited for 100 years just to meet you. ”

The man who had hidden his identity as the Demon King and was the driving force behind the invasion.

Grand Duke Arvis grabbed me with a gaze filled with intense emotions.

“If I lose you again… I’d probably start by wiping out this continent that took you away from me. ”

…Just why?