Lee Seung Gi reveals his 21-month-old daughter... Jang Keun Suk laughs bitterly, ”I can't even get married, but I'm talking about raising a child”

The teaser at the end of the SBS program "Forty-something Son's Growth Diary" broadcast on the 23rd featured singer and actor Jang Keun Suk, FTISLAND's Lee HONG-KI, and singer and actor Lee Seung Gi.