Is the human world really so dangerous...
"Since the day I was rescued by you, I have been returning to that place every day. Although I know it is impossible, I really want to see you again."
"But my brother likes you. As long as he likes it, I will take it."
"I became like this to protect you. You can only follow me for the rest of your life, don't even think about escaping."
If there is another choice
Will she give up the fish tail again, and would rather endure the pain of lack of water than choose the legs...
