The Grand Duke Has Awakened in a Strange Place

Why—
“Aren’t you going to tell me I’m pretty today?”
How did he go from a pure and reserved man to a bold, straightforward seducer?!
***
“Pretend to be the young lady and maintain the engagement for just three months.”
I got thrown into an R-rated reverse harem novel and possessed a side character, only to watch the female lead die right in front of me. To make matters worse, her family demanded that a commoner like me impersonate a noble lady.
I was ready to refuse without a second thought, but—
“Once the contract is completed, you’ll be paid five million Mint in full.”
It was enough money to live comfortably for the rest of my life. My debt-ridden commoner’s body reacted faster than my mind.
…Deal!
***
It was supposed to be just a small whim. I thought I’d help my pitiful fiancé open his eyes a little before I left.
But why on earth—
“Aren’t you going to tell me I’m pretty today?”
The reserved, innocent man I knew had turned into a bold, straightforward seducer!
“Your Highness, you’re not supposed to be like this!”
“I’m trying to make you fall in love with me, Cynthia.”
The violet eyes that had always been hidden beneath his eyelids now gleamed darkly.
“So hurry up and fall for me, Cynthia.”