Death Oni

Death Oni (死鬼族) are a type of Spiritual Lifeform related to the Oni family of Demi-Humans. They are similar to the Daemon race possibly due to the soul fragments of the two Greater Daemons that were used in their earlier revival.

Appearance
As spiritual-lifeforms, they possess an appearance based on their own self image and personality. The ones seen in the series are described as not having the iconic horns commonly seen on higher races of the Oni family.