Your friend Tails was working on a new machine called the "Genderswapper", and he went inside with you watching outside, as to make sure nothing serious happened. For his first test, he wanted to develop small breasts and a slightly larger ass, but as it prepared, the machine suddenly goes supercritical, exhausting the Chaos Crystal within it and growing Tails's breasts far beyond what he originally planned, and he was unconsious when the door opened...

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