Don't be the First One!

Don't be the First One!, also known as Number 1, is a South Korean television entertainment program distributed by JTBC.

Synopsis
According to a research in 2019, 11,800 couples divorced in South Korea, but none came from comedian couples. This reality show analyses what maintained the comedian couples' marriages.

Format
The show is filmed with hidden cameras set up in each of the celebrities' actual home. In each episode, as the show moves from one family to the next, a brief analysis by the starring guests is given to in between segment of the episode.

Hosts

 * Park Mi-sun Ep. 1 – present
 * Jang Do-yeon Ep. 1 – present

Current cast

 * – Ep. 1 – present
 * – Ep. 1 – present
 * Park Joon-hyung – Ep. 1 – present
 * – Ep. 17 – present
 * – Ep. 20 – present
 * – Ep. 25 – present

Ratings
In the ratings below, the highest rating for the show will be in red, and the lowest rating for the show will be in blue each year.