KCM revealed his eldest daughter Suyeon for the first time through a broadcast. On the 9th, a video showing the KCM family's youngest son's 50-day commemorative family photo shoot was uploaded to the official YouTube channel of KBS 2TV's "The Return of Superman."

The video featured KCM revealing his eldest daughter for the first time in 15 years, along with the scene of the five family members taking a family photo together for the first time. Suyeon appeared with clear facial features resembling her mother and a model-like aura, drawing admiration from the panelists. Lala said, "She's so pretty," and Kim Jong-min commented, "She's in middle school but already has a fully developed beauty." Suyeon posed naturally for the shoot, and KCM's expression as he watched her was captured in the video.

KCM's wife, Yewon, a former Japanese model, attracted attention for participating in the shoot looking beautiful despite being three months postpartum. Yewon also became a topic of discussion for her resemblance to Minji, a member of the girl group NewJeans.

KCM shared the story of how he was unable to reveal his family due to financial difficulties in the past. He said, "When my eldest daughter entered school, we had to submit a family photo, but I submitted a photo taken from a distance because I was worried she might recognize me," adding, "It was heartbreaking not to be able to take a proper family photo." He continued, "The one I feel most sorry for and grateful to is my eldest daughter," and said, "I blamed myself a lot, wondering why I couldn't do this for her." He also expressed, "I am so thankful and happy that I hope everyone can feel these feelings and this happiness."

KCM had his first daughter in 2012, legally married his non-celebrity wife who is nine years younger in 2021, and then had a second daughter in 2022. Last December, they welcomed their third child, a son. The KCM couple has two daughters and one son.

KCM also shared his current status as a father of three, fully dedicated to parenting. Regarding his eldest daughter who has entered adolescence, he mentioned the reality of being a dad, saying, "Now when I put my arm around her shoulder, she slips away."