Chochomaru Sahara, a member of the water-skilled Kappa yōkai race, serves as the secondary protagonist and full-blooded sister of Kuguru Sahara, a half-Kappa hybrid. Driven by rigid traditional beliefs that her family required a single heir, Chochomaru once sought to eliminate Kuguru to secure her sole succession. This resolve, rooted in perceived familial duty, escalated into direct conflict, though the precise nature of their clash remains undisclosed. Despite their adversarial history, the sisters gradually reconciled, repairing their bond through unspoken compromise and shared understanding.

Her narrative arc emphasizes the friction between heritage and adaptability, contrasting her strict adherence to Kappa customs with Kuguru’s mixed lineage. Chochomaru’s evolution from rivalry to acceptance underscores themes of familial loyalty transcending ideological divides, though her contributions to wider plotlines beyond this sibling relationship remain unexplored.