After 7 years, KBS has decided to celebrate the anniversary of The Return of Superman by holding a public event with both the current families of the show and some former ones. Fans of the show are allowed to come and bring their own children to enjoy the playgrounds, food stalls, and merchandise. But that's not all, they're joined by a very special guest! (Crossposted to ao3 & fanfiction.net)

"Mom, when is our baby sister coming out from your tummy?" "Not so soon dear, maybe about one or two months later?" "How do you know when will she come out?" "Because the doctor said so..." "But how did the doctor know?"   What happens when the famous Song family has a new member to their big family? How will Daehan, Minguk and Manse react to their new addition to the family?