Yusa, Emi

The hero who defeated Satan Lord. After forcing the Satan Lord out, she is not satisfied until she sees to it that he is destroyed so she follows him into the human world. However, just like the Satan Lord, upon coming to Earth, she is reduced into a commoner and most of her powers are gone. She works as a customer service at Docodemo to earn a living.

She is a half-angel.

(Source: Wikipedia)