Synopsis

Everything makes Akira Fudou cry, movies, other people's sadness, basically anything that touches a nerve, he feels it all, and then he fuses with a demon and becomes one of the most violent beings on the planet. That contrast is the whole beating heart of this 10-episode ONA. His childhood friend Ryou Asuka drags him to an underground rave called a Sabbath to prove that demons exist. Things go sideways fast. Akira merges with a powerful demon named Amon but somehow keeps his human soul, becoming a Devilman, demonic power filtered through a kid who still can't stop feeling everything. What follows is a descent into increasingly dark territory where the real horror isn't the demons, it's what happens to people when fear takes over. Masaaki Yuasa's direction at Science SARU gives the whole thing this raw, fluid animation style that swings between beautiful and deeply unsettling, sometimes in the same frame. Kensuke Ushio's soundtrack sits under everything like a low hum you can't shake. The show doesn't pull punches on the gore or the emotional weight, and by the end it earns every bit of both. If you liked the atmospheric dread of Ergo Proxy or the visceral energy of Kemonozume, this hits a similar nerve. Fans of Shigurui: Death Frenzy will recognize the unflinching approach to violence. Based on Go Nagai's classic manga, this is a modern retelling that leans hard into themes of identity, love, and what it actually costs to stay human when the world is falling apart.