The protagonist is reborn and returns to his first day on the job, awakening to the "Business Vulnerability Repair System" and being able to see through the logical flaws, legal risks and human traps behind all business operations within the company. He relied on this ability to "fix loopholes" in the company while secretly investigating, and eventually discovered that the actual controller of the company was a criminal organization that used legitimate corporate shells for financial laundering. He was forced from a low-level employee who just wanted to save himself to become a righteous "business hacker".