Keno Inusaka safeguards the Wisdom bead, a crystalline sphere etched with the Japanese character for wisdom, embodying intellectual discernment and strategic insight among the eight dog warriors. His chest bears a distinctive peony-shaped birthmark, marking his connection to the Satomi lineage. The "inu" (dog) within his family name aligns him with his fellow warriors.

Having experienced death, Keno lives again through a supernatural bond sustained by his guardian spirit, Kokonoe, who often accompanies him in his profession as a traveling dancer. This dance background fundamentally shapes his combat style; he wields fans or concealed blades with the grace and precision of performance, transforming movement into battle effectiveness.

A significant, complex dynamic defines his relationship with Younosuke, a snake charmer initially an antagonist. Younosuke identifies Keno as an enemy upon seeing the bead yet feels a powerful attraction. Their connection culminates in mutual demise during combat.

Within the group of eight warriors, Keno participates in the collective quest to locate their scattered comrades and confront supernatural threats targeting their clan. His personal journey involves gradually uncovering his origins and purpose as one of the reincarnated dog warriors destined to protect the Satomi. Unresolved supernatural elements surrounding his resurrection and enduring link to Kokonoe remain part of his existence.