Shogo Kai is a competent lawyer who works for one of the four major law firms in Japan. While he is generally recognized as a sharp mind, he is also quite arrogant and at times resorts to methods that pushes the limit of legality.

Shogo Kai is a competent lawyer who works for Yukimura Uesugi Law Firm, one of the four major law firms in Japan. While on the one hand he is generally recognized as a highly capable individual with a sharp mind, he is also quite arrogant and at times resorts to methods that pushes the limit of legality in order to get the win. Although Shogo is the biggest earner for the firm, his extreme win-at-all-cost mentality worries his boss, who suggests that he hire an associate as a condition for his promotion. The person who coincidentally comes along is Daiki Suzuki. While he has a sharp mind and a photographic memory, influenced by bad company, he scrapes a living day by day working part-time as a substitute exam taker for various industries.