그 작은 슬픔들이 소중한 거란다 했던 (adjectival clause) == 그(those) 작은(little) 슬픔들이(sad feelings) 소중한(precious) 거란다(it is that) 했던(said) => (someone) Who said those little sad feelings were precious. 그 작은 이유들이 너를 만든 거란다 했던 (adjectival clause) == 그(those) 작은(little) 이유들이(reasons) 너를(you) 만든(made) 거란다(it is that) 했던(said) => (someone) Who said it was those little reasons that made you. 난 나일 거라고 (adverbial clause) == 넌(you) 나일(must be me; is to be me) 거라고(that) => That I must be me.

A child who was sleeping Doesn't know that a shadow on the wall is sunset shining A star where the moon left own place ain't shining no more Cried and crying (mean that child is crying in the dream, right?) 그 작은 슬픔들이 소중한 거란다 했던 That’s you I know once you told me That you more beautiful when you stopped in childhood day I know what you told me That I'm Just a part of this world The dream keeps going on I dream Even if the moon will go away, my song will never stop I will fill this white night I have a song that i need to sing To Sing it out 그 작은 이유들이 너를 만든 거란다 했던 That’s you I know once you told me That you more beautiful when you stopped in childhood day I know what you told me That I'am 난 나일 거라고 Oh I'm beautiful I know what you told me That I'am In this world I'm... I'm already someone's star (I didn't understand those parts where i leave korean parts of lyrics)