Masaoka was once a highly respected Inspector in the PSB, but his skeptical attitude toward the Sybil System and his insistence on relying on traditional investigative methods led to an increase in his Crime Coefficient. This culminated in his demotion to Enforcer, a role that forced him to work under the very system he questioned. Despite his fall from grace, Masaoka continued to approach his duties with professionalism and dedication, using his experience and instincts to support his team. His demotion strained his relationship with his son, Nobuchika Ginoza, who viewed Masaoka’s latent criminal status as a source of shame and a cautionary tale.

Masaoka’s life is further shaped by his past as a father and mentor. His wisdom and paternal instincts often lead him to serve as a confidant for his younger colleagues, including Akane Tsunemori and Shinya Kogami. However, his strained relationship with Ginoza remains a source of unresolved tension, as the two struggle to reconcile their differences.

Masaoka is a middle-aged man with a rugged and weathered appearance, reflecting his years of experience and the hardships he has endured. He has short, graying hair, a beard, and a prosthetic left arm, which he lost in an accident during his career as an Inspector. His uniform, like other Enforcers, includes the standard PSB gear, but his demeanor and presence exude the wisdom of a seasoned veteran.

Masaoka is calm, thoughtful, and pragmatic, often serving as the voice of reason within his team. His traditional values and skepticism toward the Sybil System set him apart from many of his colleagues, but they also make him a valuable mentor and guide.

Despite his reserved nature, Masaoka demonstrates a deep compassion for his team members, offering guidance and support when they face challenges. His relationship with Ginoza reveals a more vulnerable side, as he struggles to reconnect with his son and earn his respect. Masaoka’s willingness to put others before himself underscores his selflessness and dedication to his work.

Psycho-Pass (Season 1)
Masaoka serves as a key member of Division 01, using his experience and instincts to assist in investigations and mentor his colleagues. His role as a quasi-father figure is particularly evident in his interactions with Akane Tsunemori, whom he helps navigate the challenges of being a new Inspector.

Masaoka’s relationship with Ginoza is a central subplot in the series, as the two grapple with their conflicting views on the Sybil System and their shared past. Masaoka’s attempts to bridge the gap between them highlight his regret over their strained relationship and his desire to reconcile with his son.

Masaoka’s story reaches a tragic conclusion during the pursuit of Shogo Makishima. In a selfless act, Masaoka sacrifices himself to protect Ginoza, using his prosthetic arm to prevent a grenade from detonating. His death leaves a lasting impact on Ginoza, serving as a catalyst for his eventual growth and change.

• Nobuchika Ginoza
  Masaoka’s relationship with his son is fraught with tension, as Ginoza resents Masaoka’s latent criminal status and views it as a failure. Despite this, Masaoka consistently shows love and concern for his son, even sacrificing his life to protect him.

• Akane Tsunemori
  Masaoka acts as a mentor to Akane, offering guidance and support as she navigates the challenges of her role as an Inspector. Their interactions highlight Masaoka’s wisdom and his ability to inspire confidence in others.

• Shinya Kogami
  Masaoka shares a mutual respect with Kogami, recognizing his skills and potential as an Enforcer. Their camaraderie reflects their shared experiences as latent criminals working under the Sybil System.