During the show, Kim Rae Won was in the midst of taking photos with his cellphone when he received an unexpected call from fellow actor Jo In Sung.

Kim Rae Won told him over the phone, "Hey In Sung, I'm on air right now." Jo In Sung responded, "I know. I'm watching now. But wait, it was your birthday?"

Hearing this, MC Park Kyung Lim commented, "Mr. Jo In Sung, we apologize but we are currently recording live at the moment." Jo In Sung replied, "Yes I am aware. That's why I called. We drank together a few days ago. I called you but you didn't answer, and I saw Rae Won picking up his phone."

SEE ALSO: Veteran singer Yoon Soo Il thanks BLACKPINK's Rosé for the revival interest in his classic 1982 song "Apartment"

Jo In Sung said about his best friend being the first guest to appear on the show, "Hey Rae Won, I paved the way for you now. This is a brand new show barely starting off with a low production budget," showing off his pride.

The actor continued, "I feel like he is a very compatible friend to me." Hearing this, Kim Rae Won said, "Thanks In Sung, I truly appreciate it. I hope that we can stay good friends for a long time."