Singer KCM revealed his doting father side. On November 11, KCM posted on his social media account, "Dad met your mom and until now, his arm would go numb, so he never once used his arm as a pillow until morning. But now it happens. Every time my arm goes numb and I wake up, I was so careful not to wake you up. Just seeing you sleep is so lovely that I can't help but smile. When you see this photo later, please remember it. My arm was quite numb, but it was the happiest moment in the world. Grow up slowly."

KCM added, "This one photo seems to be the moment in my life when I felt 'happiness' most clearly, so I'm recording it. Let's all be happy," sharing his happiness as a father. The revealed photo shows KCM giving his daughter a pillow with his arm while lying in bed. The daughter, sleeping beside KCM, boasts a cute appearance that resembles him.

Fans responded to KCM's post with comments like, "I thought the second child looked like the mom, but the more she grows, the more she looks like dad," and "She looks exactly like her dad." KCM replied to these comments with "No way," making fans laugh.

KCM registered his marriage with a lover nine years younger than him on January 13, 2022. He attracted attention in 2023 by revealing the existence of his two daughters, aged 13 and 3. KCM appeared on 'Same Bed, Different Dreams 2' and mentioned that his wife resembles NewJeans' Minji, proudly calling her "3-second Han Ga-in." On 'Groom School,' he explained that his wife lived abroad for a long time and was not fluent in Korean, saying, "She wasn't a Korean-American, but she naturalized in Korea."

KCM's wife is known to have worked as a model in Japan. Recently, KCM also shared news of expecting their third child, receiving many congratulations. KCM continues to express his love and pride for his family while communicating with his fans.