The young master of the Organization, The only daughter of Mu Tianmiao.
Mu Xiaokui was strong enough to challenge masters of martial arts when she was eight years old. Jade Wrait and Iron Husk protect her from her father's order.
As the daughter of the Nether Lord, Mu Xiaokui is very talented and smart, as she could recite hundreds of books when she was a child and has already gained the reputation and ability to command highly skilled warriors.