Soulmates: Marks and String

She let out a slight gasp as she saw the light on her right forearm form the symbol of a cat's paw. Her soulmate was none other than her partner.
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He felt something tied around his left pinkie, it was the red string. His eyes followed the string which led to
the spotted heroine's left pinkie.
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At the age of 15, they get the soulmate mark or the red string. But for the two, Marinette and Adrien, something...interesting occurred. they had gotten both, the string and the mark. Which trail are they going to follow? Was it a mistake?

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