Kurohime/Origin

Kurohim translates as "black princess". This character may represent the spirit of Kurohime mountain. Alternatively, it maybe inspired by the character Himeko from the manga Kurohime. The author of this article is not fully convinced of this and welcomes further edits.

Kurohime Mountain
Kurohime Mountain has a legend that it was once inhabited by a dragon or giant snake who fell in love with a princess, Kurohime. He took the form of a samurai and courted her. Her father set a series of tasks for him, all of which he accomplishes, and nevertheless denies the marriage. The samurai reverts to his true form, and the princess offers to marry him. Or drowns herself, take your pick. The mountain is named after her.

The character's two-ton stone club makes it seem likely that she is named after the mountain itself, rather than the princess from the folktale.

Himeko
The character Himeko is the malevolent qualities of the character Kurohime from the manga Kurihime, in the form of a little girl. She does not physically resemble the Ayakashi character, and, although she eventually acquires the ability to love, feel compassion and empathy, etc., she seems to belong in the phantom category rather than the divina.