(Author Note: I apologize for those who were disappointed that I did not continue "Adventure Time With Fionna and Charlie" I wasn't satisfied with the first Chapter and I wanted more time to think before I try that story again. Anyways I hope you like this one.)

15 Years Is A Long Time

An Adventure Time Fanfic

Rated: T For Some Language, Sexual Themes, Violence and Blood

Plot: What happened in the 15 years before the Epilogue to "Climb The Wizard Steps"? What kinds of Adventures happened? How did Finn and Princess Bubblegum's relationship evolve? And what of Flame Princess?

Pairings: Fubblegum, LadyJake

Year One Part 1: Loose Ends

Candy Kingdom

12:00 pm

It has been 3 Months since a now 18 year old Finn returned to Ooo after climbing the "Wizard Steps" and Finn and 20 year old Princess Bubblegum's relationship was blooming nicely. Finn had taken permanent residence inside the Candy Kingdom acting as Princess Bubblegum's Personal Guard as well as being her Boyfriend. Finn still went on Adventures with Jake every now and then but they were sadly fewer and far between with each having new responsibilities Finn being Bubblegum's Guard and Jake being a Father. On a peaceful and beautiful day Finn and Princess Bubblegum were having a private picnic in the Castle Courtyard. Both were sitting close together under a Cotton Candy tree, well Princess Bubblegum was sitting Finn was laying down with his head in her lap his Bear Hat cast aside so that Bubblegum could run her fingers through his golden shoulder length hair. Both were staring at each other with love and adoration in their eyes. Princess Bubblegum smiled down at Finn, planting a gentle kiss on his forehead.

"I love you Finn."

Finn smiled back at her, closing his eyes in content as she continued to stroke his hair.

"And I love you PB."

Princess Bubblegum giggled, she loved that nickname. Their pleasant silence was interrupted by the terrified shrieks of Peppermint Butler who came running up to the couple.

"Lord Finn! Lady Bubblegum! Danger!"

Finn raised his head from Princess Bubblegum's lap and looked at Peppermint Butler, reaching for his hat and Demon Blood Sword.

"What is it?"

Peppermint Butler waved his arms up and down frantically.

"There's a giant Fire Demon headed towards the Castle!"

Finn blinked a few times.

"Fire Demon?"

His eyes widened as a thought occurred to him.

"Was this 'Fire Demon' wearing a dress and had a jewel on its forehead?"

Peppermint Butler nodded frantically.

"Yes!"

Finn frowned as he got to his feet.

"I was afraid of that."

Flame Princess...

Finn looked back at Princess Bubblegum.

"Stay here, I'll try my best to get her attention and divert her from the Kingdom."

Princess Bubblegum nodded, getting to her feet as well and wrapping her arms around him.

"Be careful Finn."

Finn returned the hug and gave her a brief kiss.

"I will, I promise."

Finn sheathed his sword, put on his hat and rushed out the gate. Princess Bubblegum clasped her hands together in prayer like she often did when she sent Finn on a dangerous Adventure.

Glob, if you can hear me please protect him.

Grasslands

12:30 pm

Finn ran as fast as his legs could take him as he saw Flame Princess in her Giant Form getting closer and closer to the Candy Kingdom. He was hoping he could talk some sense into her and not have to resort to striking her down because even though they weren't together anymore, he still cared about her.

"Flame Princess!"

Flame Princess' attention was diverted as she looked down and saw Finn standing there looking up at her, his arms spread.

"Finn? Is that you? You look...older..."

Finn nodded.

"It's me Flame Princess! Please you've gotta stop what you're doing!"

Flame Princess frowned, her anger not fading in fact it seemed to be growing.

"So then it's true."

Finn blinked a few times.

"Huh?"

Flame Princess grew twice the size she was a moment ago.

"You're together with Princess Bubblegum!"

Finn was sweating from the intensity of the flames, feeling anger welling up inside him as well.

"Yes it's true but what are you upset for?! YOU broke up with ME!"

Flame Princess growled and started throwing fireballs at Finn.

"Have you forgotten what that bitch did to me?! She sealed me in that lamp!"

Finn dodged them, blocking what he couldn't dodge with his sword.

"She did it for your safety and the safety of Ooo!"

Flame Princess was getting angrier.

"LIAR!"

She fired a giant fireball at Finn which knocked the Demon Blood Sword out of his hands and gave his hands some minor burns.

"OW! Hot hot hot!"

Flame Princess' anger seemed to lessen when she realized she had hurt Finn.

"Are you ok Finn?!"

Finn blinked a few times at Flame Princess showing concern for him even though she tried to kill him. It seemed she still cared for him after all.

"I'm fine Flame Princess but I won't be if you continue on this rampage!"

Flame Princess started to shrink as Lava Tears formed in her eyes.

"I...I...I'm sorry..."

Finn nodded.

"I know...I'm sorry too."

Flame Princess was just about to return to normal size when she saw something out of the corner of her eye.

"Finn!"

Princess Bubblegum was rushing towards Finn, she had seen Finn get hurt and couldn't just sit by and watch anymore. Suddenly Flame Princess' anger returned and she shot another gigantic fireball at Princess Bubblegum.

"Die bitch!"

Finn's eyes widened both when he saw Princess Bubblegum coming and when Flame Princess shot at her.

"NO!"

Flame Princess had an evil smile on her face as she saw the fireball get closer to Princess Bubblegum. But that smile turned to horror when Finn jumped in the path of the fireball and took it collapsing to the ground in front of Princess Bubblegum, unmoving. Both Flame Princess and Princess Bubblegum screamed his name in unison.

"FINN!"

Princess Bubblegum cradled Finn in her arms as Flame Princess finally returned to normal size and rushed to his side. Finn had a really bad looking burn on his chest and his eyes were closed. Tears streamed down both Princess Bubblegum and Flame Princess' faces. Princess Bubblegum shook Finn in desperation but he wasn't responding.

"Finn are you ok?! Say something please!"

To Be Continued...

Next Time: Reconsiliation

Italics: Flashbacks

Bold: Thoughts

Adventure Time is (c) 2007-2013 by Pendleton Ward and Cartoon Network