The Twentieth Century Girl / 20th Century Girl · 20세기 소녀 / 이십세기 소녀 (20segi Sonyeo / Isibsegi Sonyeo)
Once Again / I Have Been There Once · 한 번 다녀왔습니다 When the Weather Is Fine / If the Weather Is Good, I’ll Find You / I'll Find You on a Beautiful Day · 날씨가 좋으면 찾아가겠어요 Moment of Eighteen / 18 Moments / A Moment at Eighteen / Eighteen · 열여덟의 순간 Top Star Yoo Baek · 톱스타 유백이