When asked if he had ever met with Gong Myung's brother NCT member Doyoung, the actor replied, "Yes I have." Seo Kang Jun then added, "I also went out to eat with Gong Myung, his brother Doyoung, and his mother as well. I meet up with them sometimes. They are great people."
Netizens commented, "All of 5urprise's members are handsome," "He is really good looking, my heart skipped a beat as soon as I saw him," "It looks like he lost weight again," and more.