Singer KCM and his second daughter Kang Seo-yeon, who is 44 months old, make their first appearance on KBS2's "The Return of Superman." The 606th episode of "The Return of Superman" (hereafter "Superman"), airing on January 28, is titled "Princess! Daddy Will Protect You," featuring MC Kim Jong-min and Lalal. KCM joins as a new "Superman," revealing his second daughter and beautiful wife on the show for the first time.

KCM's wife is currently 34 weeks pregnant. When she appears on the broadcast, Lalal admires, "She looks like Minji," and asks, "Isn't your wife full-term?" Then, their second daughter Seo-yeon appears, capturing everyone's attention. Seo-yeon is described as a charming daughter who is affectionate toward her father and loves playing with him, a "daddy's shadow." She wears an angelic smile throughout, drawing Kim Jong-min's envy. Kim Jong-min repeatedly laughs, saying, "What kind of luck does KCM have?" and "I'm so jealous."

KCM transforms into Seo-yeon's personal hairstylist, revealing a surprising charm. He proudly shows off his strong arms and skillfully completes her pigtail sausage hairstyle, astonishing everyone. Lalal praises KCM's hair-tying skills, saying, "This isn't the first time you've done this," giving him a thumbs-up.

KCM shares a heartfelt love story with his wife, who is nine years younger. He honestly talks about their first meeting, how they started dating, and the personal reason for their delayed marriage registration. KCM tearfully confesses, "When my first child was pregnant, I had too much debt, so I couldn't register the marriage because I was worried it would affect my wife and child," and expresses his sincere wish for his family, saying, "Now I want to make memories with my family like everyone else."

"The Return of Superman" has been a beloved program by the public for 13 years since its first broadcast in 2013. In 2023, "Superman" star Jung-woo ranked in the top 10 for two consecutive weeks in the cast popularity category, proving himself as the youngest and strongest trending sibling. In August 2025, "Superman" stars Haru and Shim Hyung-tak simultaneously entered the top 10, demonstrating viewers' passionate interest. Last July, the show received the "Presidential Citation" at the 14th "Population Day" ceremony, showcasing its prestige as a "national parenting entertainment."

KBS 2TV's "The Return of Superman" airs every Wednesday at 8:30 PM. KCM's family life is revealed for the first time in this broadcast, and viewers are expected to experience a range of emotions through their story.