Anisphia's personal maid. Although a servant, she watches over Anisphia like an older sister. She was saved by Anisphia in the past and is deeply loyal to her.
Ilia was born into a low-ranking noble family. To improve their status, her parents intended to marry her off to an influential husband, basically treating their daughter as a political tool.
All of this caused Ilia to grow up to become a fairly weak-willed person who did whatever she was told. However, before marrying her off, her family had her work at the royal palace as a maid. This led to her meeting Princess Anisphia, the Anisphia made Ilia her personal maid and permitted her to talk openly in her presence. All of this caused Ilia's personality to undergo a great change as she became much more blunt and willing to stand up for herself.
Eventually, she cut all ties with her parents and continued serving as Anisphia's maid after the princess moved into the new Separate Palace