MBC 'What do you do when you play?' Is it going to spray cold water again on 'Couple' which is winning. In the 13th MBC drama 'Couple' broadcasted on the 20th, singer and broadcaster Lee Mi-joo, actor Park Jin-joo, actor Lee Yi-kyung, model and broadcaster Joo Woo-jae are GLOW, GLOW, Is expected. Recently, 'What do you do when you play?' And 'Couple' were met. ', Broadcasters Yoo Jae-Suk, Haha and Joo Woo-jae, Park Jin-joo, Lee Yi-kyung and Lee Mi-joo challenged' Couple 'special appearance. Yoo Jae-Suk said, "I've done historical dramas. I've appeared in 'Discrete' in the past." Yoo Jae-Suk has starred in MBC's representative drama 'Discrete' through MBC Infinite Challenge' in the past. Yoo Jae-Suk received unanimous praise for his experience in dramatic dramas, while Kim Sung-yong's "Okay Sign" kept his emotions and brought out momentary immersion. It was Yoo Jae-Suk who succeeded to the added ambassador while watching actor Namgoong Min of Jang Hyun. Haha attracted attention by digesting the ambassador and expression without any gap. However, when Yoo Jae-Suk and Haha's special appearances were released last week in 'Couple' 12 times, the audience reaction was sharply divided. Some pointed out that "Kim Tae-ho PD does the same thing again," and that collaboration with entertainment and drama was obvious because Kim Tae-ho PD had already tried it in "Infinite Challenge," saying, "I'm trying to get into serious dramas, I'm not immersed in it," and "I'm suddenly feeling like taking a contest." On the other hand, another viewer said, "It was not so heavy, but it was good to ventilate because it came out in the right place." "What are you doing when you play? "It was so good to meet the 'Couple' team," "I had a good time," and "I can promote each other's programs." On the other hand, 'Couple' is a human history melodrama that deals with the love of the Couples who are sick and the vitality of the people. In the last episode of Part 1, it recorded its highest audience rating of 12.2%, and on the 13th, it opened 11 episodes of Part 2.