The Possessive Emperor’s Concubine and I’m About to Die

I was reincarnated as Elise, a supporting character in a novel who is destined to be killed soon by the female lead.
Right now, staying alive is my top priority.
“I liked the obedient Elise, but I must say, I’m even more fond of the current you.”
The Emperor is growing more obsessed.
“Hmm, I really do like this body.”
He has fallen under a deadly curse.
“I prefer it often, and if possible, lasting a long time.”
The Grand Duke’s charm is dangerously irresistible.
Why is everyone acting like this toward me?
Mom, I don’t want to be possessed anymore.
Can I survive and make it to a happy ending?