This creature is the manifestation of dark chi from the main character(Hiei) of the manga I am working on. He lives within a boxwood netsuke and awakens when his name,"Kage" is called. Kage considers Hiei to be his father, since he essentially sprang from Hiei's own spiritual being. Kage is a spirit beast or a kami, and acts as guardian to Hiei and all of his companions or allies. Since Hiei has a special affinity for Rei (love interest) so does Kage, and he protects her as fiercely as his father would.