Emilia Justina

Emilia is the main female protagonist and the Hero who defeated the Demon King Satan. After forcing the Demon King to retreat from Ente Isla, she followed him to modern day Japan to ensure his destruction. However, just like the Demon Lord, she lost most of her powers upon her arrival and was forced to assume a Japanese name. She was also forced to find employment, and so became a call center agent. She is a half human and half angel.

Overall, Emi is a strong-willed and determined hero, displaying many admirable qualities befitting of one in her position; among which are a pure heart, boundless courage, unwavering loyalty to those closest to her, and a deep-seated desire to protect the innocent. Moreover, she lacks self-confidence and gets angry/frustrated easily. While initially hesitant to become the great hero of Ente Isla, the death of her father at the hands of Lucifer's Army ignited a fire in the heart of the young hero, giving her a motivation to train harder and strike down those who destroyed her village.

Due to her personal losses, she sees all demons as her enemy, most of all their leader, Satan Jacob.