Kei's resurrection is the moment everything becomes uncertain, even his own morality. The show doesn't give you a villain to hate or a hero to root for, just a chain of people making impossible choices while hunted by a world that sees them as monsters. The 3D animation is visually rough, but it's also what makes the supernatural dread feel genuinely alien and wrong. By the finale, you realize the real terror isn't Ajin abilities, it's how easily a desperate, immortal man becomes exactly what society fears him to be.

Kei Nagai gets hit by a truck and should die on impact. Instead, he wakes up completely healed. That's when his life implodes. He's an Ajin, one of a mysterious breed of immortal beings first seen on an African battlefield 17 years earlier, and once his secret is out, an international bounty is placed on his head. Specimen is the only word the world has for him. A high schooler who once studied to become a doctor and barely paid attention to lessons about Ajin, Kei is now alone and on the run from all of humankind. He has to uncover the terrifying secrets behind his new abilities before he is forced to use them in battle, and he soon suspects that others like him may be closer than he thinks.