Fionnaxmarshall Stories

fionna is just a girl trying to live her best life while she has it, but it seems a few complications have sprung in her life, and it doesn't look like they are leaving...

Fionna Mertens is the type to a routine, spending her time helping others and keeping up in school. She keeps her head down when it comes to the school's drama, but what...

BEFORE YOU ADD THIS IN YOUR LIBRARY READ THIS:so this is my first book and their might be wrong grammars or spellings in this story and might be garbage so don't bother...

Marshall Lee and Fiona have unknown love for eachother, that who knows when they will know of it?

After Fiona kills the Lich, Cake starts to notices changes, more specifically, between Fiona and Marshall Lee's relationship. One shot. (Ps I wrote this for extra credit...

(Adventure Time) Now Fionna is 19 and wants to stay with Marshall forever. What happens when Fionna finally decides to join Marshall in his immortal night life? Is it al...

Fionna is stuck with Marshall for 3 years. Is that enough?

This is a Fiolee fanfic. * Smut warning * This is about the struggles of Love and heart ache. Fionna and Marshall are very different people which creates a bunch of conf...

This is a Fiolee fanfiction. Fionna will start at her cannon age of 13. I will gradually her up to 18 throughout the chapters. This is to avoid Marshall Lee being involv...

O.O.A.K239 - "Okay peeps I don't know how to start off this description..." Marshall Lee - "Why don't you start by telling them all about me?" Fionn...

Keeping her breathing steady, Fionna pushed her body forcefully, running at a great speed whilst praying she would escape the grasps of the well-known 'vampire king'. Be...

A while ago, Fionna and Marshall started dating. They fit together like peas in a pod, and nothing can separate them... ...Until now. One day Fionna gets into a huge acc...

After a tragic event that happened to both the young human girl, and the king of the Nightosphere, it has left the two teens with emotional scars although Marshall had F...

It's been months since Marshall Lee seen Aaas famous heroine, fionnathe human. He can't stop dreaming of her, nor can she stop dreaming of him. What if these dreams are...

[unedited version] fionna, a newly turned 17 year old, gets her heart broken for the very first time. while trying to get her mind off the matter, she stumbles into a tr...

Fionna and Marshall love each other, but are they meant to be?? ((I do NOT own Adventure Time OR their genderswapped selves.))

A Fiolee fanfic

It's the untold story of Marshall Lee and Fionna! :D