Attack on Titan : new beginning

I am a normal person And I live on planet Earth, specifically in Japan. Tales started when I bought a new game called Attack on Titan in your own way. I played the game on the Playstation and when I woke up I found out that I wasn't really in Japan I looked around and saw very tall walls leaning against the tree, then a girl looked at me and said, "Irene, are you awake?" I looked at my hand, it was a small child, but the strange thing is that the one in front of me was Mikasa from the anime? Then I said to myself, did you really enter the world of Attack on Titan? With someone who knows future events how the story will be