Professor Dar deceived Dr. Zenkoji, a renowned robotics expert, into creating the ultimate combat android, Hamezder. Upon discovering Dar's evil intentions, Dr. Zenkoji resolved to develop Mirai, an android equipped with "Justi"—a system capable of moral judgment closely resembling human conscience. As the completion of Mirai Rider Hanako draws near, the laboratory is suddenly destroyed. Struggling to stabilize the volatile "Justi" system, Hanako stands against evil. One day, she meets Takuma, Dr. Zenkoji's son, and through his genuine human kindness, she begins to rediscover the emotions buried within herself. Wrestling with the pain of being an existence different from humans, Hanako finds new hope through her growing bond with Takuma.