"Agent Kim Reactivated" was a summer phenomenon few in the industry saw coming. The 10-episode series wrapped its run on July 25, with ratings peaking at a nationwide series-high of 23.1 percent, according to Nielsen Korea. The dramatic surge cemented the project as one of Korea's defining television hits of the year — with veteran star So Ji-sub anchoring the show's massive breakout as a long-established name among the country's blue-chip action leads. Playing the titular Kim, a former special