An unknown librarian moves from Canterlot to Ponyville. With him, he brings an ancient affliction, unbeknownst to the population. Does he find a cure? Just who is he, and how does he know so much about everypony?

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(As my first fanfiction, I would appreciate any critiques that could be left for me. The first chapter is simply to gauge interest, as well as to garner any critiques on style. Characters will be added as they appear, to avoid spoilers.)