It was a memory from my childhood.
When I was young, I was once walking hand in hand with my mom when I saw a stream of water suddenly burst from the ground, which startled me.

• "Oh, mom, what is that?"
• "Oh, that's called a fountain."
• "Can I drink that water?"
• "No, it's dirty. Don't, don't."

Suddenly, that time came to mind. In my memory of mom, I saw the fountain I had seen back then. Mom was spraying water just like a fountain.
But it was different. The water that fell on my face was …