The January 9th episode featured a 'Friend Invitation' special, and Park So Hyun invited her longtime friend and "original" idol star Kang Sung Hoon. The Sechskies member said of Park So Hyun, "I saw her for the first time when I was 16, and she was a complete goddess. I saw her as a woman, so I was incredibly nervous around her. I'm still nervous around her right now."
He continued that he actually thought about what it would be like if the two dated, saying, "Noona is always looking out for others. There are times it's too much, so it gets uncomfortable. I think if we were a couple, it'd get really tiring."
Park So Hyun also revealed her first impression of Kang Sun Hoon, sharing, "A light shined from his face. I'm usually not the kind of person to pay a lot of attention to others, but someone who completely grabs everybody's attention was sitting at the hair salon. That's why I asked who he was. Even before his debut, everyone knew his face was amazing."