This woman is a minor character of The Promised Neverland series. She is a former ally of Julius Ratri, who, due to the latter's sacrifice to end the war between demons and humans, became one of humanities' first cattle.
Nearly a thousand years ago, she was a leader of an unknown country who was caught up in a war between the humans and demons. At some point, she met five other human leaders on the battlefield, including Julius Ratri, and they all became trusted companions, putting aside nations and races to fight together. One night after a whole day of fighting with countless causalities, the six leaders discussed about how to end the war. Julius suddenly proposed to the idea about offering up a portion of humans to the demons, but the woman and the other four leaders were against this, deeming that it was possible to end the war without any human getting eaten.
A few days later, Julius once again brought up his previous proposal and wanted his allies to reconsider it, sick and tired of continuously having to sacrifice people. His allies refused once again; not only to save innocent humans, but because they didn't want Julius to suffer on his own and carry all of his burdens by himself. Julius, however, was dissatisfied by their answers, and brought several demons to their hideouts, revealing that he had already made a deal with . He betrayed his allies to achieve peace between the worlds, in which the white-haired woman and her four other allies were offered to the demons as the first generation of cattle.
The woman was a fair-skinned, slim and petite woman who had a pair of inward-tilting, light-colored eyes, and thick eyebrows. She had straight, white hair, freely falling down to her shoulders and below, with braided bangs secured on the back of her head with several hair ornaments. Additionally, she had some sort of mark on her forehead. Overall, her facial features heavily resemble that of Norman's.
She was a deeply compassionate woman who cared for the well-being of her allies above all else. However, she also cared about the well-being of all people; for example, she was completely against Julius' proposal to offer up a portion of humans, deeming it was extremely wrong for generations of innocent humans to suffer just so she and the others could achieve peace and survive. She also had strong lateral thinking skills and was very perceptive and emotionally insightful, understanding other people's thoughts and feelings very well and being able to grasp the severity of a situation rather quickly.