Why the songs I used are important

I don't know how many are still reading this story at the moment, but maybe you noticed that the title of every chapter is actually a song. A song often has a story to tell and I picked these song because their meaning/story adds to the chapter in some way. The problem is, sometimes I used German songs and not everyone here understands German. But for one very important song I searched the world wide web for a translation. The original German title of "Chapter 80 - Restoring The Light, Facing The Dark" was actually "Chapter 80 - Sisyphus", a song by the German band "Samsas Traum" (Samsas Dream). If havn't read the chapter, you should wait to read the lyrics until you did:

In free fall
Towards the ground,
I fall
From the summit of eternal life
Into a cold grave
Did you think that for
A loser like me,
A stab in the back
Would rob me of my will?
Listen to me!

Nothing holds me back this time,
What follows will be either my victory or my end
Because at the summit lies my happiness,
I want to be back in my own hands
Nothing holds me back this time,
I want to be by your side
Because at the summit lies my happiness,
Don't leave me alone

With me, dreams are smashed into pieces
I pick up the rubble
Dead or alive,
I want to get back up
With hands and feet,
Little by little,
I fight against time
I'm coming back
Listen to me!

Nothing holds me back this time,
This story has a wrong ending
Because on the summit lies my happiness,
My heart belongs in your hands
Nothing holds me back this night,
Nothing can avert this ending anymore
On that mountain over there rests my happiness,
Bury my heart with your hands

For the people to lazy to read the lyrics and interpret them, this is the most important line:
This story has a wrong ending

What this means you can guess for yourselves.