Singer Young Tak appeared as a special childcare intern in the final episode of tvN STORY’s ″Childcare Intern.″ With no prior childcare experience, Young Tak took on real-life childcare challenges while receiving training from Lee Kyung-kyu and Ahn Jung-hwan.

The filming took place in Busan, Lee Kyung-kyu’s hometown and where Ahn Jung-hwan played professional soccer. Lee Kyung-kyu, Ahn Jung-hwan, and Young Tak cared for three siblings: 6-year-old Siwoo, 4-year-old Soyoon, and 15-month-old Siyoon. During the process of looking after the three children, Young Tak had to continuously learn various childcare tasks such as how to hold a baby, use a bottle, and change diapers without any breaks.

Regarding Young Tak’s participation, Lee Kyung-kyu praised, ″Among the juniors in the entertainment industry I’ve seen, there is no one like Young Tak. He excels in character, emotion, intelligence, and even soccer.″ When Young Tak revealed that he is thinking about marriage, Lee Kyung-kyu and Ahn Jung-hwan said, ″Today is Young Tak’s marriage encouragement project,″ and continued the intensive childcare training.

Although Young Tak expressed confidence in his stamina by saying he runs 5 km a day, he struggled to keep up with the nonstop tasks in the actual childcare setting. Nevertheless, he actively engaged in childcare by holding singing and dance classes to his hit songs and preparing water for the children during an outing to Gwangalli.

After completing the joint childcare, Young Tak caught attention by making a statement that surprised the senior interns. Meanwhile, in the eighth episode, Lee Kyung-kyu and Ahn Jung-hwan were shown skillfully taking care of the baby, unlike their beginner intern days.