Note: I have never freakin' done this, please don't murder me if you dislike.

He looked around the ocean, surrounding his boat, nothing for miles and miles on and on in every direction, except the dark mass of land ahead of him. With nothing on the vibrantly bright and blue sky above him other than the sun hanging in all of its blazing glory upon it. As he looked at it, he squinted slightly with his deep blue eyes as he looked at the sun in all of its glory.

It reminded him of a certain someone, a person who he was once with. A grin grew on his face, as he looked back at all the good times he had with her. This was quickly turned upside down when he remembered what he had done to lead to their separation. And why he left home, and who he had left there, the longing to see the smiling faces of his friends, how they were doing, and what they were doing.

...

(5 years ago)

Finn was staring out of a giant gaping hole in the tree fort, without the company of his canine brother, Jake the dog. Earlier a few months ago, Jake and Lady Rainicorn had puppies, resulting in Jake having to leave and live with Lady in order to help in raising his kids and also start his family.

This resulted in Finn being left alone in the tree fort, which Jake was not exactly comfortable with at first, but the human told his canine brother that he could look after himself, and encouraged Jake to go on and look after the kids and Lady.

At 15 years old, Finn was fully supportive of his canine brother's decision to leave the tree fort and move in with Lady. An act which surprised Jake, but accepted it after a few days and obliged, promising to visit from time to time.

After that, it was a rinse and repeat for Finn, as he continued to do missions for Princess Bubblegum, from obtaining scientific data and materials to beating down monsters of different sizes that threatened the safety of the Candy Kingdom and various others. Day and night, he used his cursed grass sword to protect the innocent residents of the land of Ooo and when his day was complete, the warm and comfortable interior of the famous tree fort was bliss, along with casually playing with BMO and Neptr.

When, all of a sudden on a random day, a weakened Flame Princess and Cinnamon bun on a flaming flame wolf came crashing through the wall of the tree fort, sending bits and pieces of the wood wall across the floor of the living room of the fort.

After getting over the initial surprise of having the wall of his home being absolutely knocked down, Finn eventually learned that the original Flame King, FP's evil father and his wizard comrade, Don John, freed FK from the princess's former prison and took control of the fire elementals and had usurped FP of the throne and weakened her with poisoned tea from Flame Princess's servant. Recovering his fire proof suit, Finn tried impressing FP multiple times in an attempt to win her back and rekindle their relationship, which in turn resulted in them both being captured by the mind controlled citizens of the Fire Kingdom.

Eventually however, Don John was duped into fighting against FK, while Cinnamon bun freed FP and Finn from the prison cell. The two former comrades were so caught up in their fist fight that they eventually were trapped in FK's former prison that they had just escaped, breaking the Flame wizard's control of the fire elementals. Cinnamon Bun was then celebrated for as the Fire Kingdom's saviour by its citizens and FP herself.

Finn looked at all of this with his deep blue eyes, pondering over his inappropriate and untimely actions. He slowly dragged himself back to his home, with no one noticing his departure. When he reached the tree fort, he sat in the exact chair he had been sitting in before CB and FP had crashed in.

"Why did I act like that? What the Bjork was I thinking?"

These thoughts flew all around in Finns head, as he rocked the chair on it's hind legs.

"I blew it. A second time! I should have just focused more on helping FP with her problem, instead of acting like a huge doofus."

Firm's eyes slowly welled up with tears as he thought of this, filling up inside with instant regret.

"First I trick her into destroying the Ice Kingdom on account of some stupid dream...and now this."

Firm's tears finally dropped from his eyes, forming a small stream of the salty face water down until it reached the point of his chin.

"Maybe I don't deserve a second chance with her..."

Finn was reeling with emotional pain from his actions, blaming himself nearly causing the girl he cared for to loose her home.

"...I should leave Ooo for a while. Take a break from all of this biz. I can't be a hero like this. I gotta...clear my head."

With that final declaration, Finn got up, picked up his trademark pack, filling it with some provisions and taking a few maps of various continents with him that originated from the time before the mushroom war.

Before leaving, Finn wrote a letter to Jake, giving information on why he had decided to leave.

Dear Jake,
I gotta leave for a while to clear my mind , because I blew it with FP and nearly caused her to lose her kingdom and her life by acting like a dingus when she and CB needed my help. Look after Ooo while I'm gone and don't worry about me, okay?

Finn

Sealing the letter in an envelope, with the words "to Jake" scribbled on it, Finn placed the letter on the table next to the stove.

As he opened the door and stood right on the doorstep, he took one last look around the tree fort, attempting to remember all of it's characteristics. With a heavy sigh, the hero of Ooo closed the door of the tree fort behind him, unaware of what would transpire in the events of his absence.

BMO would eventually come out of his hiding place in the wall of the tree fort, searching for Finn and finding no trace of him.

Weeks go by, and the human is still missing from the tree fort. Jake would later return to the tree house for his occasional visit to his little bro, only to find a clear inch of dust on every interior surface of the fort. Worried, Jake would find the letter left on the table next to the stove and upon reading it, instantly being filled with worry.

Immediately after this, Jake would call Princess Bubblegum, informing her of what had happened and asking if she had seen Finn. She would be shocked by the reason behind his departure. She too would immediately be worried, and after enlisting the aid of Marceline, she would conduct one of the biggest searches for one person in all of Ooo. However, even with the aid of Marceline and nearly every kingdom, except for the fire kindom, as their ruler still did not trust PB, was looking for him. Even Ice King was searching wizard city for him. They could not find Finn anywhere in Ooo, no matter which dungeon, cave or rock they could not find him anywhere.

For Marceline and PB, a decade could pass by for them in a flash without either one of them even noticing anything. But a few months without their good and supportive friend was completely different.

When almost all hope of finding Finn by themselves slowly faded as the months went by, they eventually turned to Flame Princess, informing her of the news through the help of Flambo. She was instantly enraged as she was angry that Finn would just leave Ooo on a stupid mistake, but also worried sick about his well-being.

However, even after a gruelling 2 years, they could not find Finn anywhere, and eventually had to give up and returned to their daily businesses with a heavy heart, wondering where Finn had gone and hoping that he was alright.

As the years passed, everyone in Ooo who had known of Finn gave up on trying to find him, except for Jake, Princess Bubblegum, Flame Princess, Marceline and Ice King. Finn had been around for them when they needed his aid, and he had tried his best to help them in whatever troubles they had.

Eventually however, after 2 years, they were forced to stop their search, and focus more their attention on their daily lives, with PB and FP ruling their respective kingdoms, Jake looking after his kids and Lady. This left Ice King and Marceline to continue looking for a clue to where Finn had gone, with the other 3 checking in to see if they had found anything linked to Finn's departure.

They too eventually had to stop their search for the human to deal with the number of criminals and monsters rising, with no Finn to stop them. But even with all of this work dropped on their heads they still hoped that the human would return to them.

(Back to present day)

A splash of seawater hitting his face brought him back to his senses, as he saw a giant wave of the ocean with an evil face before him, looking ready to trash his boat to pieces. As he pulled his grass sword out, he grinned, looking ready to take down the watery behemoth before him.

"For Billy!"

He yelled out as he leapt off the boat to meet the angry ocean wave, slashing and hacking at it, which caused it to explode, sending him flying back to the surface of the boat. With a groan, the twenty-year old human got back onto his feet as he realised that he had successfully vanquished the evil wave of salty water.

"Algebraic! I can't wait till I-"

His cheering was short-lived when his vessel bumped into something hard. Turning around, he realised that he had landed on his old home. Gazing at it, it looked exactly like he had left it 5 years ago. After a minute of silence from his landing, Finn let out a statement.

"Well, guess its time for another adventure."

Hope whoever the hey is reading this enjoys it. Sorry if it is a little long, this is the first time I've ever done this. Leave your comments in your reviews.