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The Fibonacci Series

Summary:

Soulmate-AU, When you write on your skin, it appears on your soulmate's skin as well. Follows Erin and Holtz as they grow up.

Notes:

Thank you to blxxm for letting me use the same AU, I loved their fic so much and wanted to write something with the same kind of idea, so you should definitely read that as well. I have read through it, but there may be a few mistakes I missed, please excuse them, thank you for reading!

(See the end of the work for more notes.)

Chapter 1: Aged 3

Chapter Text

Your first memory is the first time you see your soulmate’s drawing on your skin. Erin remembers a ticklish feeling on her right arm. She remembers pulling up the sleeve of her blouse and seeing a tiny spiral that grew bigger as it spiraled out. She traced her finger along the line, intrigued by the almost-perfect curve that had appeared on her skin.

She toddled over to her mum, pointing to the spiral on her skin, unsure as to what it meant, and how it had formed on her skin. “Most people have soulmates,” her mum explained “and when someone draws on their skin, it appears on their soulmate’s skin as well. Your soulmate drew this spiral on their skin, so now it’s on yours as well.” Erin liked the thought of being connected to someone in a special way, but still didn’t understand why her soulmate had drawn a spiral on their arm, it seemed like a strange thing to do. She smiled at her mum and went to find her dad to show him the spiral.

She found her Dad in his office and showed him her arm. “Look Daddy! My soulmate drew on my arm!” Her Dad lifted her onto his lap and looked at her arm.

“Your soulmate must be clever like you, Erin.”

“Why?”

“Because they’ve drawn something called a Fibonacci spiral.”

“What’s a fibby-archy spiral?

“A Fibonacci spiral is a spiral drawn from the Fibonacci series, here, let me show you,” He grabbed a piece of paper and a pencil and placed them on the desk in front of them. “The Fibonacci series is the numbers you get when you add one and one, then one and two, then two and three…” He explained as he wrote out the sums, stacking them on top of each other to help explain. “You can make the spiral your soulmate drew like this” He began to draw out boxes, writing the numbers of the sequence in the center of each box. Once he’d filled the page he drew a sloping curve, following the boxes as a guide, and formed the spiral that Erin’s soulmate had drawn on her arm.

Erin grinned contently and jumped of her Dad’s desk, taking the pen he had used with her.

--

Jillian remembers the same ticklish feeling, only for her it was on her left arm.

She knew how soulmates worked because she’d asked her Mum the day before when she noticed how everything on her mum’s skin, appeared on her Dad’s skin as well.

She looked at her arm to find a stack of sums that began at her elbow and ended on the back of her hand. She looked at the numbers and compared them to the large book spread out on the floor in front of her, grinning when she realised they matched.

She dragged the book to her mum in the next room, laying her arm over the book to show how the numbers matched. “How do you say that word?” She asked, pointing to the title.

“Fib-un-ah-chi. Did you write those sums?” Her mum asked, but already suspected the answer.

“No my souuuulmate did!” Jillian answered, stringing out the middle of the word in happiness. Her mum nodded and smiled, watching as Jillian scooped up the book and skipped away, humming a little tune, delighted by her soulmate’s reply.