Standing Egg - 넌 이별 난 아직
넌 이별 난 아직 means something like “You’re parting; I’m still.” Which means someone is leaving while the other person is staying.
넌 - you are
이별 - parting, farewell, part (from)
난 - I am
아직 - still, yet
I’ve seen it translated as “Farewell for you, not yet for me.”
Enjoy the song!