KBS2's 'Problem Child in the Rooftop Room' episode 321 features a lighthearted competition over male hormone levels.

In this episode, airing on the 17th at 10:10 PM, Jin Sun-kyu and Lee Hee-joon from the film 'Run Boy Run' appear as guests. They join Song Eun-i, Kim Sook, Kim Jong-kook, Hong Jin-kyung, Yang Se-chan, and Joo Woo-jae to engage in conversations on various topics.

Lee Hee-joon expressed his fandom for Kim Jong-kook and shared his desire to learn exercise from him. In response, Kim Jong-kook assessed Lee Hee-joon's appearance, saying, 'Your face is one that needs a good body,' eliciting laughter.

The central topic of this broadcast was undoubtedly 'male hormone levels.' Jin Sun-kyu candidly confessed that he recently received test results from a health checkup showing his male hormone level at 2.12, which is below normal. Kim Jong-kook offered advice, saying, 'You need to do more lower body exercises,' and revealed his own level at 9.96, displaying confidence.

However, the situation took a turn when Lee Hee-joon revealed his level was 10.6. Even Kim Jong-kook could not hide his surprise at Lee Hee-joon's unexpected number. Upon hearing the two men's high levels, Jin Sun-kyu referred to himself as 'Underprivileged Sun-kyu,' cracking up the studio with his self-deprecating humor.

This episode adds intrigue with the formation of a mentor-mentee relationship between Kim Jong-kook and Lee Hee-joon regarding exercise, as well as the three-way battle over male hormone levels.