Chiyuki

Onna who is referred to as Black-Haired Woman (黒髪の女 Kurokami no Onna) is an amnesiac girl taken in by Nona to Quindecim and hires her as Decim's assistant.

Appearance
Onna is a young woman with violet eyes. She has shoulder-length black hair with a streak of white in her bangs. Her slender and semi petite figure is accentuated with a black crop top, a mini skirt held by a white belt, and ankle strap heels. She accessorizes herself with a necklace and a white bracelet.

Personality
First seems to be innocent and questions many things, but actually is intelligent and knows a lot on human behavior.