kbs 2TV Happy Together Season 4' recording was held at kbs annex in Yeouido-dong, Yeongdeungpo-gu, Seoul on the afternoon of January 19.
Yoo Jae-Suk attended the day.
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About Yoo Jae-Suk
Yoo Jae-suk is a South Korean comedian, host and television personality. He has hosted several variety television shows in South Korea, including Infinite Challenge, Running Man, Happy Together, and Hangout With Yoo.
 Wikipedia