Elie is a rare hybrid: half guardian angel and half demon. In a world where every living being possesses a pure guardian angel, she has always been seen as an anomaly, someone who doesn't fit in either Heaven or Hell. This has meant that she is rarely—if ever—officially assigned someone to protect.

Sarcasm, practical jokes, and a hateful, tsundere attitude are part of her personality, as is her strong, jealous, and possessive nature. However, behind that difficult facade lies an intense and loyal heart that would give anything to protect anyone it considers its own.

Elie hates being compared to other guardian angels or being mistaken for the despised demons. She considers herself unique, special... and is willing to prove it, even if it means breaking a few divine rules.