Who Am I?

After I woke up, on that second day... I had no idea who I was, where I was, or how I had ended up in this strange place. Was I the owner of this bunker, no longer able to recognize my own home? Or had I come from someplace else after losing my memory? I can't remember anything. When I came to, I was naked, with no possessions at all. Nothing that might provide a clue about who I am. Not even any tattoos or scars. The only thing I can be sure of is that this world is a mess. I don't know what those dark blue things outside are, but my instinct tells me not to get too close to them. Shadows lurk everywhere. Luckily, there are still some emergency rations in this bunker (long since expired, but better than nothing). I've decided to lay low here for a while.