Koutarou Amon, a former First Class Ghoul Investigator with the Commission of Counter Ghoul (CCG), undergoes profound personal and ideological shifts. Orphaned in childhood and raised in a Catholic orphanage by Donato Porpora—a ghoul masquerading as a priest who preyed on his wards—Amon’s discovery of Donato’s true identity forged an intense loathing for ghouls, propelling him into the CCG to shield others from similar trauma. Excelling at the Ghoul Investigator Academy, he graduated atop his class and partnered with Senior Investigator Kureo Mado. Early on, he embraced rigid moral absolutism, condemning all ghouls as inhuman. This worldview fractured after encountering Ken Kaneki, a half-ghoul whose unexpected mercy and vulnerability during their clashes sowed doubt in Amon’s convictions, igniting a reluctant curiosity about ghouls’ potential for empathy. His partnership with Akira Mado, Kureo’s daughter, deepened his internal conflict. Initially strained, their rapport matured into mutual reliance, with Akira harboring unreciprocated romantic feelings. Despite this, Amon fiercely prioritized her safety, mirroring his evolving capacity for emotional bonds. His career thrust him into pivotal conflicts, including clashes with the Bin brothers and the Anteiku raid, where he faced Kaneki anew. Severely wounded and losing an arm in their duel, he narrowly survived through Aogiri Tree’s experimental interventions, emerging as an artificial one-eyed ghoul. Reborn into a fractured existence, Amon wrestled with guilt and hollow despair, confronting the roots of his hatred in unresolved trauma tied to Donato. Forced to reckon with his role in cyclical violence, he sought redemption by rehabilitating fellow transformed ghouls like Seidou Takizawa and aligning with Kaneki to dismantle the corrupt systems of V and the CCG. His journey culminated in efforts to forge a fragile bridge between humans and ghouls. Key relationships defined his path: Donato, a manipulative father figure whose psychological grip lingered until their final, cathartic clash; and Kaneki, a rival turned reluctant ally, united by shared defiance of systemic oppression. Despite battling identity crises and purpose, Amon’s unwavering moral compass and introspective resolve propelled his metamorphosis from rigid enforcer to a catalyst for coexistence, embodying the fragile hope of reconciliation.