SES Shoo's first son Im Yoo is to make his debut on the KBS 2 TV entertainment program 'Happy Sunday - Superman Returns.' On the upcoming episode of the KBS 2 TV entertainment program 'Happy Sunday - Superman Returns,' which is to air on May 18, 2014, SES Shoo's son Im Yoo will return from kindergarten and join his mother Shoo, his younger sister twins, Lee Hwi Jae, and his twin children. In related news, the KBS 2 TV entertainment program 'Happy Sunday - Superman Returns' is a reality show featuring Korean celebrity dads and their children. Singer Tablo and his daughter Ha Ru, comedian Lee Hwi Jae and his twin sons, actor Jang Hyun Sung and his two sons Hyun Woo and Joon Woo, and MMA athlete Choo Sung Hoon and his daughter Choo Sa Rang currently star in the show. The episode featuring SES Shoo's first son Im Yoo will air this coming Sunday on May 18, 2014.