Evanescent || Newt Scamander x Reader

"Step into my case, I will not have you lose your memory."
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Newt Scamander ends up staying longer than he planned in New York, meeting a girl he never planned on.
Is he just being silly, or could this mean more?
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Highest Rank: #1 in Fantastic Beasts
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Note: Story was written only after the first movie came out, so events and personalities that take place in any other movies are/were unknown to the author. Take this story at face value after seeing only the first movie.