A/N

Ever heard the saying 'The enemy of my enemy is my friend'? How about 'The sister of my enemy is my love'? Lemme explain.
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What if Will Cipher, Bill Cipher's alternate universe enemy, had a younger sister? What if that sister caught the eye of Bill? And what if that sister became best friends with Ford Pines?
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You can already tell this is gonna be chaotic.
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I do not own Gravity Falls, only my OC(s) and the plot.