On the May 1st episode of The Problem Sons of the Rooftop Room, Lee Joon-young appeared as a guest alongside Jeong Eun-ji, who stars in the KBS 2TV drama 24h Gymnasium.

During the show, Song Eun-yi asked Jeong Eun-ji about her ideal type, considering her past co-stars, including Seo In-guk, Choi Jin-hyuk, and Lee Jun-young. Jeong Eun-ji replied, “The person who is doing the best is Lee Jun-young,” adding that while Seo In-guk is six years older and Choi Jin-hyuk is seven years older, this was the first time she worked with someone younger than her.

Lee Jun-young, who played the character Youngbeom in I Was Fooled alongside IU in the Netflix original, was asked about his most comfortable co-star between IU, Pyo Ye-jin, and Jeong Eun-ji. Lee quickly responded, “Jeong Eun-ji,” explaining, “She was the most comfortable. There were so many funny scenes in this drama, and filming was really fun because she kept the atmosphere light.”

Lee also shared a heartwarming anecdote about IU sending him a coffee truck during filming. “I didn’t ask for it,” he laughed, “but I sent a thank-you note to the director of Melomobe for the thoughtful gesture.”