Yui Kirihara, the 29-year-old president of talent agency Kiri Pro, manages a chaotic roster including the irresponsible protagonist Komugi Nakahara, competitive Megumi Akiba, temperamental child star Runa Tokisaka, and ineffective manager Shiro Mibu. Her professional demeanor is frequently strained by workplace turmoil, leading to volatile outbursts that contrast with her usual resigned exasperation. She routinely scolds staff—especially Komugi—for unprofessional conduct like skipping work, though she occasionally shields Komugi from outside criticism.

Once a renowned idol, Yui abandoned performing after a devastating betrayal: her planned engagement announcement to Richard, president of a rival agency, was preempted when he publicly declared love for her own manager. This humiliation drove her to establish Kiri Pro, informing her no-nonsense management style despite ongoing struggles to maintain order. She relies heavily on disciplined actress Asuka Sakurai for stability.

In the parody context of *Nurse Witch Komugi*, Yui is reimagined from her original role as the ruthless, unethical CEO of Kirihara Corporation in *The SoulTaker*—where she was killed by an antagonist—into a living, comically overwhelmed talent manager devoid of supernatural elements. Her mint-green hair and petrol-colored eyes align with her professional image. The series depicts no significant character development, maintaining her role as a harried authority navigating absurd industry challenges and her employees' supernatural conflicts.