I don't want to be the

The princess became a bubble and disappeared.
Her mother quietly closes her book. She said, "That's why you shouldn't get close to humans." This story is called "Mermaid Princess". It's a sad story of our mermaid ancestors. I was told this story repeatedly, and her mother advised me not to approach humans. She is a princess who has disappeared in a healthy bubble without taking the prince's life. She really loved her so she couldn't kill her. Every time I heard this story, I was wondering whether it was pure or crazy.