Heechul revealed frightening experiences with sasaengs.
He and Cosmic Girls will be on KBS b' 'We Like Zines!' on the 11th. During the show, Heechul talked about a sasaeng who had figured out his door passcode, and put their underwear with the members' underwear. They even texted Heechul and said, "Oppa, your teddy bear underwear is so cute."
He also revealed, "When I changed my cell phone number, I got a text right away saying, 'Even if you change your number, we already know it'. It was so scary and I got goosebumps."