Rei, a female agent of Kirishima Agency—a secret intelligence organization directly under the Prime Minister—operates as General Robin, a crime-fighting heroine clad in a powered suit. However, one day she witnesses a suspect being suddenly shot dead right before her eyes, and she herself suffers a shoulder injury. Kirishima calmly approaches her, stating, "You're neither an invincible esper nor an alien. The powered suit can reduce the impact of bullets, but it can't nullify it completely." Leaving those words behind, Blood—the archenemy—appears before Robin. Holding seven cities hostage, he launches a series of vicious, psychological torments against Robin, who is unable to strike back. Their battle transcends mere rivalry, evolving into a fierce clash of minds and souls.