2009년 화려하게 데뷔 후 카리스마 섹시 걸 그룹의 대명사로 자리매김한 가요계의 핫이슈 메이커 "4minute" 대중들을 미치게 하는 무대 위의 센 언니들! 하지만 이 모습이 전부가 아니다!! 7년차 아이돌 포미닛의 리얼한 일상 레코딩이 시작된다!!! 포미닛을 위한, 포미닛에 의한 [포미닛의 비디오]
If you search online, there should be the episodes with english subtitles. Basically they're playing the "of course" game, in which the person being asked a question has to reply "Of course." to anything the other player asks. If not, they lose the game. You are right, that guy is one of their managers. Below, I have a very rough translation of what they said. For the first part, Oh Sung (the manager) said to Jihyun : " I'm not your taxi driver, you know?" Hyuna: you know you gained some weight, right? Oh Sung :Of course. You did too. Hyuna : Of course! I'll lose it! Of course! Sohyun: What should I ask? Hyuna: Hey, hurry and take (something.. I'm not sure) back. Sohyun: -Something related to dating- Gayoon basically scolds her for asking such a pointless question and Sohyun says that Hyuna told her to ask that. Oh Sung: You know you're not good with dating? Gayoon: scolds him about how he could say that and something about causing Sohyun to misunderstand him because he says it so seriously. Jiyoon: makes an example of how he should be more loving or caring when he says it. Sohyun: of course. Gayoon: something about Oh Sung wanting to work with other artists. Oh Sung: of course. Gayoon: asks him why he can't look at her and does he really want to.. Oh Sung: Sorry, but could you let me get to the last person just once? Oh Sung: You know you're great at singing? Gayoon: Of course. Hyuna: Hey! You said that I had bad skin and gained weight! Gayoon: Oh, our Oh Sung! Hyuna: You know your skin has gotten worse? You gained some weight too? but to Gayoon unnie, you know you're great at singing? Jihyun: You like me? Oh Sung being awkward. Gayoon: Are you confessing?