On the recent episode of MBC's television show 'Buddy into the Wild', Byul made a guest appearance.
While watching a video of HAHA and singer Sung Si-kyung on a trip together, Byul commented, "I'm actually a huge fan of Sung Si-kyung."
She continued, "Sung Si-kyung is a singer that all other singers look up to, you know. He will always be my very celebrity."
![HAHA](https://img.sbs.co.kr/newimg/news/20210722/201573460_700.jpg)
Byul said, "There was this time when I talked about Sung Si-kyung to HAHA. At that time, I referred to Sung Si-kyung as Si-kyung oppa."
She resumed, "HAHA was like, 'Don't call him Si-kyung 'oppa'.'", then laughed at HAHA's cute jealousy.
![HAHA](https://img.sbs.co.kr/newimg/news/20210722/201573459_700.jpg)
He went on, "Not only is he tall, he also went to one of the three top universities in Korea. He's also got a candy-like voice."
Another host Yoo Se-yoon jokingly responded, "Yeah, I hate that guy so much."
![HAHA](https://img.sbs.co.kr/newimg/news/20210722/201573461_700.jpg)
(SBS Star)