Yeo Jin Gu and Ha Yeon Su had a strong first kiss.

In the cable tvN sitcom "Potato Star 2013QR3" (below Potato Star) Na Jin Ah (played by Ha Yeon Su) and Hong Hye Sung (played by Yeo Jin Gu) kissed not knowing when they would die.

As a large comet 2013QR3 would be crashing with Earth, all characters were at a turning point. They started to deal with this sudden problem in their own ways.

And late at night, Hye Sung and Jin Ah found a large comet. Looking at this, Jin Ah was scared saying, "Are we now all going to die" and Hye Sung hugged this Jin Ah. At this point, they were relying on each other and started to kiss each other as it led to a more intense kiss.

Viewers watching this showed reactions like, "Jin Gu, now you're really a man," "Jin Gu, my heart's broken" "Wow you're a real man."