Synopsis
There's a girl in our house who everyone calls Incompetent. She showed up the day I turned eight. Father announced it plainly — from now on, she's your little sister. Be careful in public. I didn't really understand what he meant by "just a little sister." I didn't understand what "be careful in public" meant either. But watching the way the adults around her acted, I figured out somehow that it was fine to treat her carelessly. I didn't need anyone to explain it to me. I also didn't know what "being kind" meant, so I couldn't exactly do that…
