Today so much of the "Music" is so muttered and poorly mixed it's hard to understand the words. That has been the case with the theme song and my trying like mad to even figure out almost any of the lyrics. I have seen 질문 about what the theme song name was and no one had the answer and googling it didn't help. Well I finally found it. The name of the song is Independence 의해 the Blue 봉고차, 반 and the lyrics are as follows.
My independence went away
I didn´t listen when it said 'rely on yourself trusting someone else is a path for the silent ghost'
My independence went astray