When Sulli gained criticism for her bizarre Instagram posts, Kim Ui Seong stood up for the idol star, and tweeted, "Sulli, who keeps on uploading photos without providing needless explanations, is the coolest in the world." He continued to defend Sulli from haters and told them to ''live your own life."

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On the May 18 broadcast, he talked about his controversial defense for Sulli, and said, "A lot of people hated it."

He then revealed, "I was actively on Twitter once but I'm not doing it now because it's election period. I think I need to be careful of my mouth. I didn't have nothing to lose before but now I do."