When DJ Park Ji Yoon asked,�"You're known to live a righteous life so much that you rarely speak in the casual form. Have you improved?" �With that Seohyun answered, "I speak with the casual form when I'm with friends usually my age; however, it's difficult when I'm with older people."

The DJ then followed up with,�"What is the most awful thing you've committed in your life?" The singer mentioned,�"After I debuted, I went out with my friends dressed in halloween costumes. No one seemed to have recognized me as there were a lot of people around. It was so much fun taking photos, going to a bar, and chatting." �

DJ Park laughed and commented, "The worst thing you've done was go around in a halloween costume."