Nova Capital—an investment firm headquartered in a city skyscraper. Real estate, technology, healthcare. Known as a blue-chip company with over three hundred employees, it funnels funds into legitimate fields. The financial statements submitted are perfect; no matter how many times the National Tax Agency audits them, not a speck of dust is found. This is because the tax team is packed with former tax officials. However, no outsider knows that more than half of those employees are members of a certain organization.

VEX—arms trafficking, human trafficking, assassination, information manipulation. The world's largest mafia, reigning at the peak of all crime. Even with police worldwide pursuing them for years, not a single person has uncovered the boss's true identity. That boss's name is Ryuji Kurose. And—the President of Nova Capital is also Ryuji Kurose.

The same man stands at the pinnacle of both light and shadow. Modern Japan. The surface world and the underworld overlap within a single man.