DAY6's Young K attended the photo wall event for the opening of fitflop's Seongsu pop-up store '0 STEP' on the 10th in Seongsu-dong, Seongdong-gu, Seoul. '0 STEP' is an experiential retail space that sensationally expresses a new lifestyle based on comfortable movement and everyday wellness. TWICE's Nayeon and DAY6's Young K attended the event on this day and brightened the occasion. Meanwhile, Young K is currently enjoying popularity after singing 'The Season That Came Back Again,' the OST for the much-talked-about drama 'Wonderful New World.' Photo = Reporter Choi Jae-hyuk #TWICE #Nayeon #DAY6 #YoungK #fitflop #Seongsu-dong.