In those days when I just came back, it was more difficult for me to get used to it than to go through the past. No matter what I did, I was distracted. I often forgot to eat. When I opened my eyes and closed my eyes, my mind was full of pictures of that world.

I often walk on the street and stare at the tall building. If I fall again, will I fall over? My mother found something wrong with me, but I couldn't tell her the truth.

after several negative months, I finally woke up in my mother's roar. I can't go back.

since this is my...