Wtf did you smoke, Kiba?

The end of Wolf's Rain is like... on crack. What were the creators on? Or is my brain too limited to understand their great minds?

Edit: Ok, I do understand some of it (just re-watched it when I wasn't dead-tired). It's just that when I think that I understand all of it, something pops to my head and makes me think that "No, I've got it all wrong"...