Heechul commented, "Once you make your debut, there will be times when you will lose confidence. It's the same for me as well. I want to live the way I want but I can't." He playfully added, "Like now, I am a person who gets entirely edited out on 'Idol School'."
He continued, "Once you officially debut, you'll become curious about other's reactions and look yourselves up on the internet. You will come across comments and trust me, you'll forget the 99 positive responses and focus solely on that one bad rap. As a consequence, you'll become so obsessed with how you perform on stage, and begin to lose yourself."