Aya Middlestone

In the suburbs of Hilton City, located in the eastern region of the Northern Union, Aya Middlestone is known as a single mother, a loving parent, and a devoted family woman.

She is the ideal image of a perfect woman—the type who wakes up early in the morning and drives to her job as a cashier at a large mall owned by one of the influential figures in Hilton City.

Aya is a mother of two, who sent her daughters to the capital to receive the best warrior training available in the Northern Union.

Because of this, she has become known as a hard-working mom, dedicated to earning more money to support her children's needs.

Everyone admires her. Mothers praise her tenacity and work ethic; children wish she were their own mother. However, her own daughters wish the earth would split open and swallow her whole.

While Aya may seem like the most caring and hard-working mom on the surface, in reality, she is one of the most ruthless assassins in the world.