Producer Na Young-seok's past has been reduced to ridicule. In the seventh episode of tvN entertainment ' ??? Earth Game Room 2' (hereinafter referred to as 'Garak Room 2'), which was broadcast on June 23, the past of Na Young-seok PD's first appearance on the show was revealed. On this day, the members talked to the PDs of "Garak Room 2" and expressed their curiosity, "Please tell me the genealogy of the PD" and "Is it based on the appearance on the screen (sharing the generation)?" Then Ahn Yu-jin said, "When is PD's first appearance? "Is it one night and two days?" Na Young-seok began to make a full-fledged tease. After a testimony from a production crew, "It is not '1 night and 2 days'," Na Young-seok PD recalled that his first broadcast was "Girl Five" without guessing his future. At this time, the younger PD provided the members with gold information, saying, "It comes out when I search." The members took out their cell phones on the spot and started searching. The younger PD added a hint of "Twenty-nine Na Young-seok". Na Young-seok, who was seriously embarrassed, tried to stop it by saying, "Down with your cell phone!" But Ahn Yu-jin eventually found the video. Na Young-seok PD, who had a similar head to Lee Eun-ji now, was introduced as "Na Young-seok PD 29 years old unmarried" and laughed. In addition, Na Young-seok PD showed dance, and Lee Young-ji asked "Please put this material screen" with "Mollusca". Lee Young-ji and Lee Eun-ji repeatedly teased Na Young-seok PD, saying, "I can not follow this. It looks like Mollusca" and "I used to go to clubs in the old days."