I'm writing NAME_1 fiction. NAME_1 new machine named "bladder monitor glass" is developed. the bladder monitor glass can see through the person's bladder.
NAME_1 cute school girl NAME_1 cooperated with the test of the bladder monitor glass. first, NAME_1 holded urine as much as possible and tried to see. as NAME_1 result, we could see the large yellow ball floating in her body. Limit your response to 400 words.
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