If It's Remorse You Desire

Read manhwa If You Dare to Long for Regre / If you dare, I hope you regret it / ??, ??? ?????
“If you marry me, you can go anywhere. Whether you must cross the seas or fly through the skies. Anywhere you wish.”
“….”
“I’m the kind of man who can make that happen.”
Catherine, a lowly Duke’s daughter, has spent 25 years trapped in a castle. To her, this was an irresistibly tempting offer.
Her fiancé is Archduke Deimos Pendragon, the empero’s brother.
After a soft whisper, something slipped onto her finger. A diamond ring sparkled brightly in the light.
“Aren’t you going to kill me?”
“I’ve been infatuated with you for a long time.”
His predatory gaze, now finally locking onto his prey, revealed his true intentions. This is no mere proposal, it is an unilateral order for her to become his wife.
“Catherine Caliburn, I will make you loved more than any woman beneath the sky.”
With his alluring smile, Catherine came to devastating realization that her plan to break off the engagement had utterly failed.
“So never, ever think of running away from me.”
For you are destined to die by my hand.