The trailer for the 174th episode of 'Problem Child in House' garnered much attention as Kim Jong Kook was instated as the new MC on the show, and Song Ji Hyo appeared as his first guest.

At the beginning of the preview, Kim Jong Kook appeared energetically and explained, "I like doing things with gusto." After being asked to introduce the first guest, Kim Jong Kook finally went to introduce Song Ji Hyo. Song Ji Hyo complained, saying, "I've waited so long in the back!" 

The two showed off their sibling chemistry as they continued to playfully bicker with each other. In particular, the preview for the upcoming episode gained much attention when Song Ji Hyo was seen candidly asking Kim Jong Kook, "Oppa, did your heart flutter because of me before?"

Stay tuned for the new episode of 'Problem Child in House' to hear what Kim Jong Kook says to Song Ji Hyo's question!