On January 17, Han Hyun Min guested on MBC FM4U's 'Kim Shin Young's Hope Song at Noon.'
During the radio show, Han Hyun Min said, "I have been working with Red Velvet Seulgi noona for JTBC's 'Cool Kids.' My friends asked many questions about her."
He continued, "I easily talk to guys but I couldn't talk to Seulgi. Many thoughts ran in my mind. Now I think about it, I'm regretful."