The answer is Amon .
The inciting incident is psychologically brutal: Akira’s beloved childhood friend and unrequited love, Miki Makimura, is publicly tortured and killed by a mob of terrified humans who falsely accuse her of being a demon. The sight of Miki’s crucified body, defiled and broken, is the final straw. amon: apocalypse of devilman
But over time, Amon has gained a cult following as the most adaptation of Nagai’s original ending. Go Nagai’s 1972 manga ended with humanity annihilated and Satan weeping alone on a dead planet. Devilman Crybaby gave that ending an operatic, tearful grace. Amon gives it a raw, animalistic howl of despair. The answer is Amon
For fans of extreme anime, body horror, and tragic monsters, Amon: The Apocalypse of Devilman is essential viewing. It is not comfortable. It is not fun. It is a two-part, 90-minute descent into a mind that has broken completely. It asks a simple, terrifying question: What happens when the hero doesn’t just fail, but disappears? But over time, Amon has gained a cult
In the vast, sprawling legacy of Go Nagai’s Devilman , there are multiple entry points: the seminal 1972 manga, the psychedelic 1987 OVA The Birth , the modern cinematic masterpiece Devilman Crybaby , and the grim, visceral outlier known simply as Amon: The Apocalypse of Devilman (often shortened to Amon ).
Released in 2000 as a two-part OVA (Original Video Animation) directed by Hideki Takayama, Amon is not a remake or a sequel. It is a reimagining and a direct adaptation of the Amon: The Darkside of Devilman manga (written by Yu Kinutani and Go Nagai), which itself is a retelling of the final, most nihilistic arc of the original story. If Devilman Crybaby is a tragic opera of emotion, Amon is a brutalist, industrial noise album—raw, ugly, and unforgettable. The plot picks up at the most desperate moment of the Devilman saga. Akira Fudo, the kind-hearted boy fused with the demon Amon, has been fighting a losing war against the demonic hordes of the fallen angel Zennon. Humanity, manipulated by the demons and their own fear, has descended into paranoia and violence.
Grief and rage consume Akira. He loses control, not of his Devilman form, but of the demon inside him. Amon, the original "Demon of War," seizes the moment. He doesn’t just emerge; he Akira’s soul entirely. Akira Fudo ceases to exist. In his place stands the full, unshackled power of Amon: a mindless, raging beast of pure destruction who cares nothing for humanity, demons, or salvation.