Shinta Okoba is a chief reporter investigating the idol group Franchouchou alongside his photographer partner, Inubashiri. He focuses on uncovering their identities as resurrected individuals, meticulously gathering evidence while adhering to professional ethics to prevent publishing unverified claims that might incite public panic. His investigation originates from noticing similarities between group members and deceased historical figures. Originally from Kyushu with prior residence in Tokyo, Okoba operates with regional awareness and journalistic rigor. He conducts discreet surveillance of Franchouchou's activities, respecting personal boundaries while pursuing leads across their performances and public appearances. A crucial development occurs during his surveillance of Tae Yamada's solo grocery errand. He documents her participation in a dance competition and subsequent high-stakes boat race betting, where her accidental trifecta win resolves the group's financial debt. Most significantly, he photographs Sakura Minamoto accidentally detaching Tae's head, securing visual proof of their non-human nature. Okoba's character undergoes substantial evolution following the events of Episode 23, leading him to abandon his mission to publicly expose Franchouchou's secret. While the specific catalyst remains undisclosed, this marks a definitive shift from investigator to protector of their anonymity. Expanded narratives in unofficial media explore potential developments where Okoba fully confirms the zombies' identities and initiates contact with their surviving families, facilitating emotional reunions. These depictions show him experiencing temporary psychological distress upon confirmation yet ultimately advocating for the group's acceptance by their loved ones. His skillset emphasizes investigative prowess, notably identifying six of Franchouchou's seven members through historical records—Yugiri remains the exception due to her erased past. This proficiency underscores his dedication and effectiveness as a journalist.