Is this not how you get revenge?

'Julia', a commoner orphan, is killed by assassins commissioned by the Marjoram Marquisate— as a price for falling in love with their young master.

However, whenever she opens her eyes, on the exact same day, at the exact same place, she always finds herself being saved by 'Carus', the commander of the Imperial Army...

Swept up by a curse that will not let her die, her life repeated eight times.

With the realization that she cannot die peacefully without destroying the Marquisate, in her ninth live, Julia tries to become a Royal Palace handmaiden in order to cut the Marjoram's head off, through the hands of the Royal Family.