Jiro doesn't want to be a weapon, but he's built to be one, and that guilt never leaves him, even when he's saving the people he loves. The conscience circuit is supposed to make him human, except it just makes him aware of everything he can't choose, everything he was designed to do. A robot trying to prove he's more than his purpose, one act of protection at a time.
Jiro is an android built with something his creators didn't intend: a conscience. This artificial sense of right and wrong sets him apart from the machines Dr. Komyoji designed him to be, binding him to a purpose that goes deeper than programming. His mission is straightforward enough: protect the professor's children, Masaru and Mitsuko, from harm. But when the sinister Dr. Gil emerges with plans for global conquest, Jiro discovers that his humanity, though simulated, forces him to make impossible choices about loyalty, sacrifice, and what it actually means to be alive. Kikaider transforms when danger demands it, channeling his mechanical nature into raw power. Yet every battle pushes against his conscience circuit, creating friction between his combat capabilities and his moral code. The series anchors itself in this central tension: an android learning that emotions aren't weaknesses but foundations for real strength. For viewers who want action layered with genuine character weight, this is a darker take on heroism that asks whether becoming more human means becoming less of a weapon.