"Dad, is there anyone else in the world who can hurt you?"
"Yes, there is one!"
"Who is it?" Is there anyone more powerful than dad? She really didn't believe it.
He didn't answer, just played the piano quietly.
Then, she understood, closed her eyes, and listened to the sound coming from the piano.
After a long time, "Dad, why do I feel so happy?"
Then, he smiled lightly.