The 320th episode of KBS2 variety show 'Problem Child in the Rooftop Room' featured actress Hong Jin-kyung and Namgoong Min, who delivered exceptional chemistry.

The episode brought together the 'Rooftopz' members Song Eun-i, Kim Sook, Kim Jong-kook, Hong Jin-kyung, Yang Se-chan, and Joo Woo-jae, with Namgoong Min, known as the 'man of a thousand faces,' joining as a guest. They engaged in a quiz talk show format, discussing various trivia topics and delivering laughter to viewers.

During the show, Hong Jin-kyung mentioned her filmography, demonstrating her pride as an actress. She introduced her experiences in major works such as 'My Love from the Star' and 'The Legend of the Blue Sea,' and revealed that she is currently serving as the persona of writer Park Ji-eun. In particular, she shared that her immersion level rises significantly when playing characters similar to her real self, noting that the 'beggar' role in the drama matched her own tendencies, making the acting effortless.

Namgoong Min also emphasized his professionalism on set, stating that he feels displeased when he sees colleagues cutting corners. In response, Hong Jin-kyung improvised an act of a 'cheeky junior,' to which Namgoong Min reacted by saying, "Not a single one (of an ill-mannered junior) has ever gone this far," sending the studio into fits of laughter.

Additionally, when Namgoong Min remarked that on-site assistant directors have become younger than him, saying, "Kids these days are different from our time," Kim Jong-kook pointed out, "You're showing a bit of boomer energy," and Yang Se-chan called him 'Namgoong-boomer,' making the atmosphere even more lighthearted. Hong Jin-kyung then advised Namgoong Min, "Grab the ill-mannered juniors by the collar once," leaving him flustered. 'Problem Child in the Rooftop Room' airs every Friday at 10:20 p.m.