Kim Hyun Joong revealed his family at his son's first birthday.

Kim Hyun Joong held his son's first birthday party on July 29 in Seoul, inviting his seniors, juniors, and acquaintances in the entertainment industry. The party was hosted by actor Park Hyo Joon, who's also known as the YouTuber Burger Brother. 

At his son's birthday, Kim Hyun Joong is said to have expressed his love, saying, "I will raise him really well," and "I will show you how I raise him for 10 or 20 years." As for his wife, he stated, "After dating from the second grade of high school to the beginning of our debut, we've repeatedly met and parted ways since then. When I felt there was only my family in the world, I decided to get married because I wanted to have an absolute side of me. My wife is a realistic and wise person."

In other news, Kim Hyun Joong made a comeback with "My Sun" this past February.