Joo Woo-jae and Jo Jazz will present their first duet stage. They are scheduled to perform together on the September 4th broadcast of KBS 2TV variety show "Problematic Men in the Rooftop Room." "Problematic Men in the Rooftop Room" is a quiz program where cast members, who have accumulated various knowledge over the past seven years, solve extraordinary problems. Song Eun-i, Kim Sook, Kim Jong-kook, Hong Jin-kyung, Yang Se-chan, and Joo Woo-jae appear and compete.

In this episode, former baseball player Lee Dae-ho and singer Jo Jazz, who topped the music charts, appear as guests. Jo Jazz expressed a desire to duet with Joo Woo-jae, raising expectations. Joo Woo-jae is known for his high-level singing skills, having once ranked number one in trending videos. Jo Jazz is looking forward to their synergy.

Joo Woo-jae, embarrassed by Jo Jazz's love call, said, "Jo Jazz's singing style is completely opposite to mine." In response, Kim Jong-kook humorously said, "Stop setting the stage," causing laughter. The two transform into unique duets named "Bbyeo Min-kyung (Bbyeo Woo-jae + Kang Min-kyung)" and "Jo Haeri (Jo Jazz + Lee Haeri)," respectively.

On stage, Joo Woo-jae kneels and passionately sings, showing an overly immersed performance. His unexpected singing style reportedly turns the rooftop room into a sea of laughter. Hong Jin-kyung admired, "You could even officially promote as the duo 'Holtungi'." Jo Jazz said, "I'm eager to pursue my sub-character activities. I'm ready to push further and move forward." Joo Woo-jae joked, "I could tone it down more, but I might die," eliciting laughter.

Additionally, Joo Woo-jae and Jo Jazz's past connection will be revealed for the first time on the show. Jo Jazz confessed that before debuting as a singer, she worked in fashion show production and met Joo Woo-jae at that time. Joo Woo-jae exclaimed, "I remember that!" showing his surprise. Their past story piques viewers' curiosity.

This episode promises not only the duet stage of Joo Woo-jae and Jo Jazz but also an interesting mix of their past connection and humor. Fans of the show are looking forward to their harmonious duet and stories.