Mechako is the leader and a central figure in the Kaikigumi, a supernatural organization responsible for overseeing ghosts and monsters that scare humans. She is a young youkai girl who has lost sight of what fear means, causing her to lose both her status and her enthusiasm. Her encounter with an unnamed man who is exceptionally fearful of the supernatural rekindles her purpose, and she decides to use him as a key to revive the Kaikigumi and regain her former glory. Her background as the head of this organization places her in charge of the spiritual creatures that are meant to frighten people. In terms of personality, she is initially portrayed as having lost her drive, but the presence of the cowardly protagonist awakens a determined and opportunistic side, as she sees him as the perfect tool to restore the group's influence. Her primary motivation is the revival of the Kaikigumi and the rediscovery of genuine fear, which she uses the protagonist to facilitate. Throughout the series, her role drives the comedy and horror elements, as she orchestrates bizarre and spooky events involving ghosts and monsters. Her key relationship is with the unnamed protagonist, whom she recruits into the Kaikigumi and whose extreme fearfulness becomes the catalyst for the organization's resurgence. Other relationships include the various supernatural beings under her command, which she manages and directs. Over the course of the story, she develops from a disillusioned leader into a more engaged and proactive figure, regaining her enthusiasm as the organization begins to thrive again. As a youkai and the head of the Kaikigumi, she likely possesses innate supernatural abilities, though specific powers are not described in available sources; her authority and knowledge of the spiritual world enable her to command and control the ghosts and monsters that serve the organization.