Fionnaxmarshall Stories

[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...

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...

disclaimer I do not own any of the characters I only own the plot in this every one is human *chapter one* Moving ---------------- "Ugh, I am sick of moving these b...

After a horrible accident Fiona is thrust into a new world with new people, except she's known these people all of her life. Her life turns upside down as she tries to r...

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

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...

WHEN HE SAYS DOUCHE CANOE EVERYBODY GO CRAZAZY (*Pushes MattG124 away*) Okay. That is not what the story is about. Marshall comes out on his love for- DOUCHE CANOES! Mat...

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...

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...

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...

Fionna a lovely girl who transfered to another school by 6th grade and returned by 10nth grade as she returned she founds out a change in the school and her friend's sep...

It's two months before Fionna's eighteenth birthday, things are getting hectic, cake's moving out, Prince Gumball is being clingy, Marshall's a jerk and she hasn't heard...

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

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

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...

Fionna and Marshall are great friends, but what will happen when they both catch feelings and are scared to tell each other how they feel?

(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 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...

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...

Fionna starts to get feelings for someone she just meet which is the one and only handsome Marshall Lee which is the Vampire king. Marshall Lee the Vampire king starts t...