Kisho Arima, hailed as the White Reaper and the CCG’s Death God, stood as a Special Class Ghoul Investigator feared for his unrivaled combat prowess and razor-sharp intellect. His snow-white hair, gray eyes, and detached expression contrasted with the crisp white trench coat and glasses he donned during missions, concealing inner turmoil beneath an icy facade. In his youth, disguised as a student with dark blue hair, he carried a guitar case housing his quinque, Yukimura 1/3—a weapon that foreshadowed his lethal trajectory. A prodigy from the start, Arima ascended to Rank 3 Investigator at age 16 after slaughtering thirty ghouls alone. Partnering with Taishi Fura during the Lantern Operation, he infiltrated a school to expose Uruka Minami, a ghoul he later executed with clinical precision. This mission cemented his reputation as a tactician devoid of mercy. Over eighteen years, he commanded the S3 Squad, spearheading critical campaigns such as the Clown purge in the 4th Ward and clashes against the One-Eyed Owl. In a pivotal twist, he spared Eto Yoshimura after discerning her ambition to overturn the world order, forging a covert alliance to dismantle the Washuu dynasty and the shadow entity V. During the Owl Suppression Operation, Arima cornered Ken Kaneki in Route V14, crushing him in battle and leaving him mortally wounded. He then masterminded Kaneki’s capture, erasing his memories to rebirth him as Haise Sasaki. As Haise’s mentor, Arima nurtured a fatherly bond, gifting books to anchor his fractured psyche and molding him to inherit the mantle of One-Eyed King—a linchpin in Arima’s scheme to topple the Washuu regime and ignite hope for ghoul-human unity. Arima dominated combat with quinques like IXA, Narukami, and Owl, forged from slain ghouls’ kakuhou. His duels against Renji Yomo, Shachi, and Ayato Kirishima revealed a strategist who dissected foes mid-fight, exploiting weaknesses with chilling ease. Despite his brutality, he acknowledged worthy adversaries, praising Kaneki for cracking IXA and confessing regret for his life steeped in bloodshed. In his final act, he rejected his “reaper” identity, finding purpose in Kaneki’s potential before ending his own life in the manga—an ambiguous fate in the anime. His death catalyzed Kaneki’s rise as the new One-Eyed King, closing Arima’s arc as a paradox: a CCG enforcer who secretly orchestrated its downfall, forever remembered as both executioner and revolutionary.