My Lovely Journey / I Will Travel for You / I Will Take the Trip for You · 여행을 대신해 드립니다 Our Blooming Youth / Youth, Climb the Barrier / Sleep Memo / Sleeping Rock / The Golden Hairpin / Youth / Talk to the Moon / Youth Climbing Over the Wall · 청춘월담 / 잠중록 / 청춘이여 월담하라
Police University / Police Class / Police Lesson / My Little Police / Police Academy · 경찰수업 / 폴리스 아카데미 Cheat On Me, If You Can / If You Cheat, You Die / When the Wind Blows and Dies / You Cheat, You Die /You're Dead If You Cheat · 바람피면 죽는다 Rich Family's Son · 부잣집 아들 Let's Go To School, Sang Du! · 상두야, 학교 가자! 
