According to Nielsen Korea, episode 6 of 'Big Mouth', which aired on August 13, recorded an average viewership rating of 10.8%, hitting double figures for the first time since the drama's premiere. The highest rating of the episode peaked at 12.2%.
Originally, 'Big Mouth' premiered with an average viewership rating of 6.2% for episode 1 and declined to 6.1% for episode 2. Afterward, the series saw a steady increase in ratings with episode 3 hitting 7.6%, episode 4 hitting 8.6% and episode 5 hitting 9.8%.
On the other hand, SBS's 'Today's Webtoon', airing in the same time slot on Fridays and Saturdays at 10 PM KST, recorded an average viewership rating of 2.8% for episode 6 also aired on August 13.
Currently, 'Big Mouth' is receiving praise from drama viewers for its tightly packed storyline as well as for the stellar performance of the lead actor, Lee Jong Suk.