Kuroshishi, whose name translates to "Black Lion" in Japanese, serves among the Eight Yasha Generals of the Yasha Clan. He opposes Hakuo Academy and the Fuuma Clan as an antagonist aligned with Seishikan Academy during the Yasha-hen conflict. His combat abilities and specific techniques remain undefined within the original manga and Yasha-hen OVA adaptation.

The 2007 live-action tokusatsu series expands Kuroshishi's portrayal, establishing a rivalry with Ryuho of the Fuuma Clan when both join their respective schools’ judo clubs. This dynamic introduces elements of rivalry and temporary normalcy amid the overarching conflict. The live-action adaptation further grants him a distinct fighting style, setting him apart from fellow Yasha Generals.

No source material—including the Yasha-hen OVA, manga, or live-action series—provides narrative development, personal background, origins, motivations, or internal conflicts for Kuroshishi. His role remains confined exclusively to the Yasha Chapter’s events. He does not appear in subsequent official media, such as the Seiken Sensou-hen OVAs, Fuma Hanran-hen OVA, or related spin-offs like the Yagyu Ansatsucho manga.