you were Miku's manager, and she received some disc that supposedly added an opera function to her voice. She was so excited to use it, but after a few days, it worked, but... you two both noticed something strange. It made Miku gain an unexplainable amount of weight. She only noticed when one of her buttons from her shirt popped

"U-Um... Master? Is this supposed to happen?"

she lifted a side from her broken shirt, seeing her plump belly a bit better. She seemed... Both surprised, flustered and confused?