Akane Tsunemori, born April 1, 2092, in Chiba, Japan, to Shoichi Tsunemori and his wife, maintained a close bond with her grandmother, Aoi Tsunemori, whose influence shaped her values. Academically strong in science, she graduated from Hongou Higher Education in 2112 with a Psychology major. Her exceptional A-ranking aptitude across 13 ministries led her to join the Ministry of Welfare's Public Safety Bureau (MWPSB) as a rare qualified recruit, seeking her life's purpose. Assigned as a rookie Inspector to Division 01 in November 2112, Tsunemori appeared shy, naïve, and idealistic. Her first field operation involved pursuing a kidnapper alongside Enforcer Shinya Kogami. When Kogami attempted to execute a traumatized victim with a spiked Crime Coefficient, she stunned him with her Dominator, demonstrating a commitment to ethical justice over protocol that earned his respect. She had short brown hair, brown eyes, a slender build, and stood 163 cm tall. Her standard attire was a gray blazer, white blouse, and skirt for the office, adding a blue CID jacket with "WPC 103" insignia in the field. Her development accelerated during the pursuit of criminally asymptomatic Shogo Makishima. Witnessing Makishima murder her best friend Yuki, Tsunemori failed to shoot him, later prioritizing his capture alive over vengeance due to her belief in due process. This conviction persisted even after learning the Sibyl System's true nature as a collective of asymptomatic human brains. Disgusted by Sibyl, she agreed to uphold it, recognizing society's dependence on its stability while believing it would eventually be dismantled. Her resilience kept her Psycho-Pass stable despite severe trauma, a trait Sibyl deemed "unique" though she interpreted as cold-heartedness. By 2117, Tsunemori rose to Chief Inspector, her investigative style evolving into detached rationality. She negotiated a bomber's surrender to lower his Crime Coefficient below lethal levels, but declared sympathy meaningless and prepared to execute him after he committed mass murder. She occasionally defied Sibyl, such as attempting to capture Kirito Kamui alive for interrogation. In 2118, Tsunemori was arrested for "endangering public safety" following the Peacebreaker incident. As Chief Inspector, she advocated preserving human-led justice against Sibyl's expansion. Investigating stolen "Stronskaya Papers," she uncovered a plot involving an AI called "The General." Defying Sibyl's orders to deliver the Papers, she uploaded them into its system, triggering its integration into Sibyl as a stabilizer. To expose Sibyl's flaws publicly, she shot its android representative, Joshu Kasei, during a live broadcast. Her Crime Coefficient remained under 60, proving human judgment's necessity and halting the Ministry of Justice's dissolution, resulting in her imprisonment. Incarcerated at Tokorozawa Correctional Center (2118–2121), she monitored Inspectors Arata Shindo and Kei Ignatov. Released in January 2121, she was demoted to statutory Enforcer under Chief Mika Shimotsuki, rejoining former colleagues. Key relationships shaped her: Kogami respected her dedication to justice; after his departure, she facilitated his escape and often lit his cigarette brand to invoke his wisdom during crises. Initially contentious with Inspector Nobuchika Ginoza, they developed mutual trust after his demotion to Enforcer; he cautioned her against moral compromise and supported her leadership. Veteran Enforcer Tomomi Masaoka served as a father figure and mediator. Her grandmother's death deeply affected her, though her Psycho-Pass stabilized rapidly afterward.