내 존재 자체가 너였어 @whereismy_name [Credits] 01. IS YOU Lyrics by 김세헌 Composed by 김세헌, 이성찬, AceAkii Arranged by 이성찬, AceAkii Guitar by 이성찬 Midi Programming by 이성찬, AceAkii Chorus by 김세헌 Photo by Flowave Live Video Directed by Flowave