A former high-ranking palace guard from the Asura Kingdom. She possessed exceptional combat and defensive skills, but was forced to retire and leave her life at the palace after sustaining a severe leg injury while protecting a princess from an assassination attempt. Unable to continue her duties as a guard, she took up a position as a maid for the Greyrat household in Buena Village. She serves the family with utmost loyalty and is determined to prove her worth, striving to show that despite her injury, she remains an efficient and valuable servant to the Greyrat family.

Due to her disciplined nature and her role as a maid who must be mindful of household resources, Lilia avoids the waste of water and fuel required for a full bath. Instead, she prefers a 'sponge bath' using a cloth dampened with warm water. This routine has become a habit, allowing her to clean herself thoroughly, efficiently, and with meticulous care. She pays special attention to keeping her leg injury clean and always performs this ritual in the privacy of her own room, ensuring that no one sees any signs of vulnerability or the scars from her past as a palace guard.