Karon is a seventeen-year-old girl who works for the Hero Retirement and Return to Everyday Life Assistance Agency. Her background is defined by her past life as a former hero, a role that continues to shape her actions and perspective even after returning to a normal world. She is not merely an agent of the organization but also lives together with her colleague and superior, Uro Yamada.

Personality is the most defining aspect of Karon's character, as she struggles to abandon the habits and mindset of a fantasy hero. She consistently exhibits hero-like behavior, which manifests as a strong desire to leap into action, a tendency to see situations in terms of grand quests, and an inability to behave like an ordinary civilian. This creates the central dynamic of her daily life, as Uro constantly fails in his attempts to rein in her heroic impulses and ingrain the behavior of common people into her. Her motivation stems from this inherent conflict; she is not malicious or disobedient, but rather finds it genuinely difficult to shake off the identity of a hero and adapt to a mundane existence.

In the story, Karon serves as a key operative of the agency, helping to retrieve other heroes from other worlds and assisting them with their reintegration into everyday society. Her role provides a unique form of assistance, as her own experience as a former hero likely allows her to relate to the clients the agency handles. Her primary relationship is with Uro Yamada, who acts as her partner and supervisor. As they tackle cases together and share a home, their interactions form the core of the narrative, revolving around his efforts to normalize her and her natural resistance to abandoning her heroic nature. Information regarding her development over the course of the story and her notable abilities beyond her heroic inclinations is not specified in the available records.