In an interview with Ilgan Sports on August 30, Kim So Hyun revealed, "I don't even have one male friend. I don't have any phone numbers. I did go to a co-ed middle school, but it was difficult to get close with male friends. In elementary school, all I remember is fighting with boys."
The actress explained, "Since I work, I know a lot more oppas. Because of that, I know how to interact with oppas now. However, I still have no same-aged friends." She added, "Of all the oppas I've worked with so far, Yeo Jin Goo and I had the largest age gap. I don't know his phone number though."
Kim So Hyun is currently playing student ghost Kim Hyun Ji in the tvN drama 'Hey Ghost, Let's Fight'.