Secret Lady

Secret Lady manhwa is also known: The Lady’s Secret / 秘密小姐 / 시크릿레이디. Secret Lady manhwa is released in 2020 and you can read it on the website SAWAMICS.COM
– Summary :
I, Yoon Seol-woo, a young woman with the ability to see ghosts, was reincarnated as Rosantine, the eldest daughter of a noble ducal house in a world were witchcraft is considered dangerous. I managed to fake not being able to see ghosts somehow but then…
“Leave my sister’s body this instant!”, I cried out to the evil spirit who’s possessed my one and only beloved little sister.
Only the death penalty awaits me if my ability were to be discovered. Then, there’s only one way…
“You’re planning to kill Prince Chartus, right?”
I will save the Empire’s second prince, Prince Chartus with this ability!
“I’ll bet my life on Your Highness.”