After taking over Asa's body and occupying half of her brain, the War Devil took on her appearance, but with added facial scars across her the center of her face and left cheek. Yoru's eyes have multiple rings. Her hair is also usually worn loose rather than in twin tails like Asa. She wears an school uniform. Yoru can be childish sometimes, by throwing temper tantrums. One of the 4 Horsemen. She is very insecure and gets royally offended whenever her strength or intellect is questioned.