On the January 23 radio broadcast of KBS2 Cool FM’s “Park Ji Yoon’s Gayo Plaza,” Seohyun starred as a special guest and talked about the craziest thing she’s ever done.

DJ Park Ji Yoon asked, “I heard you have a hard time using informal language because you like to keep to the straight and narrow, but has that improved at all?” Seohyun responded, “I can use informal language with people of the same age as me or with anyone I’ve known for a long time, but if they’re older than me, it’s a bit hard.”

Curious to know more about Seohyun’s morals, DJ Park Ji Yoon continued, “What’s the worst thing you’ve ever done?”

“After debut, I once dressed up for Halloween with my friends and walked around the streets of Itaewon. No one recognized me because I was all dressed up. It was so much fun because there were tons of people on the streets. We took a lot of pictures, went to a bar, and talked a lot too,” Seohyun replied.

Meanwhile, Seohyun is starring as the main lead in web drama “Ruby Ruby Love” and will be holding a solo concert in February.

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