|Hair Color||Black & White|
|Japanese Voice||Yui Horie|
|English Voice||Greg Ayres|
Black Cat is a mysterious apparition that can, at will, be seen or unseen and also can be incorporeal. It always seems to be around Ouri and he seems to be the only person the cat talks to. It usually shows up at moments involving Shikabane and Shikabane Hime, and gives Ouri clues about them. The intentions and motivations of this cat is unknown, as well as its true loyalties. The cat is also seen by Makina and Akasha.
The cat is identical to a pet that Ouri cherished as a child, which died after being run over by a vehicle. Soon afterwards, this same cat appeared. Near the end of the series, the cat revealed its true nature with the help of Hizuchi, who was once a fellow orphan along with Ouri. The cat was made up of a number of children who Ouri's mother had kidnapped trying to fulfill her attachment to this world; to hold her child in her hands. The deceased children became Shiryou (restless fallen spirits), and took a united form as the cat. Later, the cat engulfed Ouri into a monstrous form, only to help him in the end and later disappearing without a trace.