The Empire's Maid 

In her first life, Leona rose through the ranks of the imperial palace's attendants by aiding the imperial concubine Viotta in her wicked schemes, but her ambition ultimately led to the empire's collapse and her own death. So, when given a second chance, she resolves to atone for her past by changing her allegiance: This time, she'll serve the crown prince whom she helped expel in her first life. But can she shield him from Viotta's ploys and prevent the catastrophic future she once created?