S3·E21 79. Grow Up Slowly

Ilgook has a "Little Mermaid" themed photo-shoot with the triplets. He has the triplets dress up as various characters from the story. Later that evening he decides that the triplets are now old enough to eat at the dining table and teaches them about table etiquette. Baekhyun and Chanyeol from Exo visits the Lees' to help babysit the twins. After playing with the twins and time for lunch, Chanyeol takes Seojun grocery shopping with him and is surprised when Seojun seems to be more popular than him. After finishing shopping and returning to the Lee home, both Exo members help to cook lunch and feed the twins. Sarang celebrates her friend Yuto's birthday by singing a song she made up. Later Sarang, Sunghoon and Grandpa Choo visit a shop that lets them get up close with all kinds of owls. Taewoong takes Jion to a child development center and is disappointed in himself as a parent when he finds out that she is behind in socializing skills with others.