On the September 5 airing of SBS Power FM's 'Cultwo Show', Sleepy was asked if he's really the one who discovered Rap Monster. He explained, "I went to an underground crew auditions and saw a young friend who was really good. So I got his number and I called Big Hit and told them to check him out. At the time, Rap Monster was in the 8th grade."
DJ Cultwo suggested the two have a collaboration. Sleepy responded, "We're talking about it a lot. It's under discussion every day. He said he'll definitely do it." He added, "Are you listening, Namjoon? Do a featuring for me once."