KBS 2TV Happy Together Season 4 recording was held at the KBS annex in Yeouido-dong, Yeongdeungpo-gu, Seoul on March 30th.
IZ*ONE Jang Won-young attended the day.
Jang Gyeong-ho
About IZ*ONE
Iz*One was a South Korean–Japanese girl group formed through the Mnet reality competition show Produce 48. The group was composed of twelve members: Jang Won-young, Sakura Miyawaki, Jo Yu-ri, Choi Ye-na, An Yu-jin, Nako Yabuki, Kwon Eun-bi, Kang Hye-won, Hitomi Honda, Kim Chae-won, Kim Min-ju, and Lee Chae-yeon.
 Wikipedia