Under Stability

She has always lived in a stable world. Until one day, she saw a picture in the water that was not part of this reality. At first, she thought it was just an illusion caused by stress. But as the number of times increased, she began to realize— There is not just one "reality". And the day she was sent to a mental hospital, For the first time, she saw a world that had collapsed. Since then, she has repeatedly confirmed one thing: ——Which one is true?