There is a Friday-Saturday drama that beat the popular drama 'Now, We're Breaking Up' starring actress Song Hye Kyo, which is airing in popularity, and achieved the highest viewership ratings in the same time period.
That's the MBC Friday-Saturday drama 'The Red Sleeve', which seemed to be a word of mouth among viewers recently, took the first place in viewership ratings in the same time period.
According to Nielsen Korea, an audience rating research company on November 27th, the 5th episode of 'The Red Sleeve', aired on November 26th, achieved a nationwide rating of 8.8% and an audience rating of 8.1% in the metropolitan area, ranking first in the same time slot. In addition, 'The Red Sleeve' spit out the highest viewership rating of 10.2% on that day.
SBS's 'Now, We're Breaking Up', a Friday-Saturday drama competitor, recorded a rating of 7% on that day.
'The Red Sleeve' is drama set in the Joseon period, revolves around the love story between King Jeongjo and the royal concubine Seong Ui-bin, a royal historical figure and the biological mother of Prince Mun-hyo, who was a court lady before she became queen.
Source[1]