Shin Min-ah and Lee Jung-jae‘s new drama Chief of Staff premiered Friday night to success after scoring a nationwide audience share that breaks drama ratings records in cable network JTBC.

According to Nielsen Korea, Chief of Staff (also known as Aide) achieved a nationwide rating of 4.4 percent on its premiere, which is now the highest first episode rating ever achieved by a JTBC drama. It broke the record made in 2017 by Man to Man‘s premiere which obtained 4.1 percent.

As of June 15, here is the list of 10 highest-rated drama premieres on JTBC:

In terms of viewership in South Korea’s capital, Chief of Staff recorded a 5.6 percent rating, becoming the first ever JTBC drama to hit the 5-percent mark in Seoul on its premiere.

Overall, Chief of Staff‘s premiere rating ranks fifth so far in 2019, following tvN’s Confession (4.6%), Touch Your Heart (4.7%), The Crowned Clown (5.7%), and Arthdal Chronicles (6.7%).

Chief of Staff is a political drama that follows the lives of a political aide and a rookie lawmaker. Lee Jung-jae (Triple), who has returned to the small screen after a decade-long absence, plays an ambitious detective-turned-aide to a high-profile congressman. Despite his already successful career in the National Assembly, he will continue to climb the political ladder.

Meanwhile, Shin Min-ah (Tomorrow With You) is starring in the series as a newly elected congresswoman who has left her job as a TV news program host to pursue her dream career in politics.

Rounding out the main cast of the drama are Lee Elijah and ZE:A’s Kim Dong-jun.

Chief of Staff is directed by Kwak Jung-hwan of Miss Hammurabi and The K2 and written by Lee Dae-il of Life On Mars and Bring It On, Ghost. It airs every Fridays and Saturdays at 11 p.m. Korean Standard Time.

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