Chapter 1: Dreams Are Portals

Another successful mission done by me (Levi Ackerman). I was pretty tired and decided to take a nap. I then woke up and saw my ex squad. Me, in confusion, thought it was a dream and wanted to wake up for I don't want to miss them at my awakening. The dream doesn't seem to end and i decided to go with the story line's flow. Years passed by and I still don't seem to wake up. "Is this really a dream?". Many things have already happened.
Then one time, something terrible that I didn't expected has happened. Something that humanity feared and tried to avoid. Everything went wrong. Everything went dark. Then finally...
I woke up...
Or is this another dream? Or this is now the reality?