This is Lady Oizaki, a fan charcter from my fanfiction. She is one of the antagonist.

Oizaki Ayaka, Lady of the Northern lands, widow of the dog demon lord of the north, she inherited that title. Married off to the demon lord at a very young age, the girl was chosen because of her renowned beauty and charms. At that time, the demon lord had many children with his countless concubines, however, at the arrival of Lady Oizaki, a child fell ill every week with a mysterious illness, only to die seven days later. Many servants blamed Lady Oizaki for the heir's deaths, only to face their own death at the hands of the demon lord. He was very protective of Ayaka and their child, however, they both died mysteriously during a raid to their castle, lead by a rebellious group. Lady Oizaki was left as the lady and ruler of the northern lands, where she, up to this day, reigns alone.

Lady Oizaki is a very crafty and sly demon, callous by passed traumas, however always fully aware of her target. A pampered woman with a wicked smile, she possesses the power of controlling the flora of her surrounding. Sharp as the tanto hidden under her kimono, Lady Ayaka Oizaki will stop at nothing to gain the power she's craved since a child.