In an interview with Star Daily News, Super Junior's Kyuhyun explained why he rejected the offer to go back to MBC's 'Radio Star.'
Kyuhyun said, "'Radio Star' is a program I'm grateful for that built a strong foundation in my celebrity career and made me known to the public but it was a position that I struggled to handle."
He continued, "'Radio Star' is a show that throws out tricky questions so I also did that without much thought but then I realized the number of anti-fans increased drastically. I even cried to sleep while looking at the unbelievable increase in antis. I'm also a part of an idol group so it was hard accepting criticism from other fandoms."
Kyuhyun said, "There's a certain role I need to play on 'Radio Star' but it was hard to accept. That became stressful to me, and made me wonder, 'Can I continue this program?' I personally contacted Kim Gu Ra hyung and Kim Guk Jin hyung and explained my situation. I do plan to appear on 'Radio Star' (as a guest) sometime in the future though."