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Emi Yusa

Emilia Justina

The Devil Is a Part-Timer!

Emi Yusa's History

Emilia Justina was born to her parents, an ordinary farmer named Nord Justina and the archangel Lailah. Knowing she had committed a taboo by birthing a child to a human, her mother fled, leaving Emilia to be raised by her father on his farm in the Western Continent. During Satan's conquest, the child lived peacefully with her father, Nord Justina. Despite fearing the day they would be accosted by the encroaching Demon Army, he assured her their village would be protected by the Church, putting her mind at ease. Her life changed drastically one afternoon when representatives from the Ente Islan Church arrived at her home to train Emilia as the Hero who could free the world of the Demon King Satan. While the young child remained uncertain of her fate, the clergy explained her responsibilities as an angel's daughter. Her father confirmed this by telling Emilia of her mother's true nature, allowing her to be passed into the care of the Church. Although initially reluctant, she was motivated when she received news of her father's apparent death when the Demon King's army laid waste to their fields only days after her departure. In reality, Nord Justina was taken by Lailah and hidden safely on Earth during this time, though Emilia remained unaware of her father's true fate.

During her crusade across Ente Isla, she fought alongside the Allied Knights Order to drive back the evil horde. Emilia defeated Lucifer in the West, freeing her home continent from demon oppression. Although the Hero believed she had killed him in the struggle, the fallen Angel survived the encounter and escaped, with Emilia unaware of his continued existence. During her subsequent battles, she defeated the remaining three Demon Generals, taking out Adramelech in the North, forcing Alciel's retreat in the East, and slaying Malacoda in the South before proceeding to the central continent to confront the leader of the demons. With the help of Emerada, Albert, and the High Priest Olba, she proceeded to storm the Demon King's stronghold, engaging the evil tyrant in a fierce battle in which they overwhelmed the dark ruler, eventually slicing off one of his horns. Angered by his defeat, Satan declared he would leave Ente Isla in the hands of the humans, hoping to return and conquer it for himself one day. Opening a magical vortex in the sky, he fled to another world alongside Alciel. Emilia pursued him through the portal to finish their battle, but her companion, Olba Meyer, had failed to reach her in time.

Upon reaching the other side of the Gate, the Hero found herself alone on Earth and bereft of most of her powers. She forged an identity under the alias "Emi Yusa" while registering as an adult in her twenties. Desiring to find and finish the Demon King, Emi continued her search and moved into a small apartment in Tokyo, getting a job at a call center to sustain her living expenses. She established a friendly relationship with her co-worker Rika Suzuki during this time.