Hush Now, Saintess!

Read manhwa Hush Now, Saintess! / 입조심하세요 성녀님!
I transmigrated into a crazy novel and came to possess the body of ‘Roella’, a fake saintess who’s destined to die young. A moment of despair. A determined plan to survive.
When the real saintess comes out, I’ll just say, ‘I knew it, I guess I’m a fake!’ then stand down! The perfect plan provided a moment’s repose.
Ding—!
〈 Mission : A villainess, but forcibly turning over a new leaf!
1. Raise your reputation.
2. Apply the automatic curse word censorship.
Penalty upon mission failure: Death within six months of the recognition of Sylvia as the real saintess.
Reward upon mission success: Survival.
Would you like to accept this mission? ( I want to ♥ / YES! ) 〉
A ruthless system window with no conscience appeared before my eyes. To ensure my survival, I followed what the system window said.