Kuronosuke, the last surviving honeybee in a world stripped of all other animal life, exists within a cat-dominated reality as a central figure confronting environmental collapse. During a torrential downpour, he is saved from a flooded gutter, forging a bond with the protagonist and anchoring their shared journey.

As a guide, he unlocks a voyage through time to a near-future plagued by humanity’s unchecked exploitation of nature—a timeline where ecosystems have collapsed, starvation reigns, and habitats lie obliterated. This odyssey lays bare the devastating repercussions of ecological negligence, with Kuronosuke illuminating both the causes and consequences as a somber observer and a voice for reckoning.

His story culminates when he offers his body as sustenance to stave off starvation, embodying the delicate balance of ecological interdependence and the moral ambiguities of survival in a decimated world. Through his arc, the narrative interrogates biodiversity loss, humanity’s role in environmental stewardship, and the echoes of collective responsibility mirrored in real-world conservation efforts.

No documented expansions on his appearance or story exist beyond the 2010 special.