Lilia is a supporting character in The Foolish Angel Dances with the Devil. She is an angel from Heaven and the older sister of the main protagonist Lily Amane. Lilia is portrayed as beautiful, with yellow or blonde hair and multicolored eyes. Her personality blends maturity with a playful curiosity; she is caring, has a strong sense of justice, and is deeply interested in the relationship between her sister and the demon Masatora Akutsu. She often watches their interactions with keen interest, remarking that Akutsu is a strange demon, and she is not hostile toward him despite the war between Heaven and Hell. Lilia possesses a battle body that she can use for combat, with her host being Lily Amane. This battle body can be temporarily controlled by other beings, such as the angel Aine. When not in battle form, Lilia appears as a normal angel. Her role in the story is primarily as an observer and occasional helper, providing support to Lily and showing a protective side toward her younger sister. Her development is limited in the anime adaptation, but the manga explores more of her involvement in the conflict between Heaven and Hell and her curiosity about the growing bond between Lily and Akutsu. Lilia is a supporting character who adds depth to the angel side of the narrative without taking center stage.