HyunA and NU'EST's JR revealed the story on how he was recruited to become a trainee/celebrity on the September 9 broadcast of 'Knowing Brothers'.
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JR said, "While I was going home after school, I was recruited on top of the hill around the school. It was a street casting. A casting manager approached me all of sudden and asked me if I had any thought of becoming a celebrity." He continued, "I heard this after but apparently, my middle school appeared in the casting manager's dream so that's why he/she were at the school."