Minoru Fujii is a medical professional serving as a doctor at Kurokawa Memorial General Hospital. He acts as the supervisor to clinical psychologist Mayu Akikawa, overseeing her work at the hospital. When police investigate a deadly apartment fire that killed five people including a woman named Hatsuko Sofue, they inform both Mayu and Fujii about the incident. The fire is connected to a little girl who was being raised in secrecy by Hatsuko, and who has no public records. Fujii is involved in the professional handling of this case alongside Mayu, functioning as a senior figure in the hospital setting. His role in the story is primarily that of a supportive authority figure within the medical institution, providing oversight and context as the events surrounding the mysterious girl and the curse of Sadako Yamamura unfold. Details about his background, personality, personal motivations, character development, or notable abilities beyond his position as a doctor and supervisor are not available through the provided sources. His key relationship is with Mayu Akikawa, whom he supervises professionally, and his function in the narrative is connected to the hospital's response to the supernatural occurrences tied to the little girl and the Sadako curse.