Author's pre-chapter note:
I forgot to add a disclaimer. So here it is: I don't own anything besides my OCs.
The next day, morning.
Finn woke up, with Jake still asleep. He went to the bathroom and cleaned his teeth. Then Finn took of his pajamas and put on his usual outfit.
A few time later he was on the way to Marceline's house. The sun haven't risen yet, but it was already bright enough.
When Finn was near Marceline's house ready to knock a door, he heard scream from upstairs. Finn quickly pushed the door and ran to the second floor.
He saw that man, who pushed the knife to Marceline's heart, but unsuccessful, because she was holding his hand. Finn quickly ran to the man and kicked him, sending him flying right through the window to the outside, breaking it in a process. Finn jumped through the window to his enemy, who had already got up and ready for the fight.
Finn reached the surface, rolled and then got up, and made his grass sword ready for battle.
"Well, who can I see... Have I seen you before? Are you that child I saw in the woods?" — asked the man.
"I am not a child, and I am going to kick your butt, you crazy man!"
"I don't think you'll be able to even touch me with your sword. Don't you know I was practicing my sword skills for more than fifteen times more than years of your existence?"
And the fight has begun. And the man was right, his sword fighting skills were nearly perfect. He deflected every Finn's attack ,every his blow. While the man hasn't had any wounds, Finn was all bleeding. The fight didn't last long. It was boring for the man, so he simply kicked Finn down on the ground, then broke his right arm, stomping on it. Finn cried violently, while the man was only watching, standing near.
"As you can see, you've lost. You better train more if you want to defeat me and my Wolf Cult. See you in... Two hundred years, I guess. It's too boring for me to kill you, while you're lying here, helpless. And of course now I can kill your... Girlfriend?.. Whatever she is to you, but the next time you'll cross my road, I will feed you and your friends to my black wolf alive. I warned you, child" — the man said, then turned into a white smoke-like thing and disappeared.
A day later, at the Candy Hospital.
Finn woke up and saw his broken arm, which was already bandaged. Jake was standing near. When Finn opened his eyes, Jake asked:
"Hey Finn... Bro, how are you?"
"Hello Jake. My arm hurts a little, but I'm okay. And I need to kick that man's butt!" — Finn answered.
"Whoa-whoa, Finn, not sow fast! You need to get your arm healed, otherwise that will hurt. A LOT!"
"So bring cyclops' tears! You know where are they in Tree House, Jake. Look under my bed." — Finn said. Jake simply nodded, then headed to the Tree House. Half an hour later he was already searching under Finn's bad for cyclops' tears. 'Damn, where are they? How long have Finn been pushing all the rubbish here?! Oh, here you go...' — Jake thought, pulling a small bottle of healing tears under a black sock. Then he went back to Candy Hospital and gave Finn the tears.
When his arm healed, Finn unbandaged himself and got out of hospital bed.
"Yeah, can't wait 'till I kick his butt!" — Finn said.
"No, Finn! You need to train how to be better with your sword!" — Jake said, throwing up hands.
"But who can train me? I don't know anyone who can train me better, then I did myself."
"Finn, I know someone. Do you remember who defeated this man centuries ago?"
"Ice King? I don't think he will teach me, and I think he totally forgot how to use swords."
"Finn, when you've learnt something to do, you'll never forget. So go to IK. I can't go with you know, so Marceline will, I think. It's dangerous for you and her to stay alone this time. I will be here, 'cause I have some important deals to deal with. Good luck." — Jake said and Finn went to Marceline's house...
"...So, you think that Ice King can help you to learn some moves with sword? I don't think he's able to teach anyone now." — Marceline said, floating above her chair.
"Why not try? We lose nothing, but if it is successful we will learn low to defend against that man. And don't you need some practice with your axe-bass?" — Finn asked.
"I think you're right, Finn. Let's go to the Ice Kingdom!
Five minutes later they were already there, visiting the Ice King in his castle.
"Finn, Marceline, you really want me to teach you how to fight with sword and axe? I don't know much about this stuff, but I'll try to remember." — The Ice King said and formed the Ice Sword out of nowhere.
"So, look. This move is a "fake cross." It was used, it is and it will be. It's simple - all you have to do is to cross the air from up to down, but then quickly change position of sword, cutting from right to the left..." — Ice King was speaking as showing the move. During the long lesson Finn and Marceline have learned many moves, which the Ice King showed them. Then they both nearly won Ice King in a fake fight, but he managed to kick Marceline's axe out of her hands and knock out Finn.
"Oh sorry Finn. It will hurt a little tomorrow, but don't worry - everything will be okay." — The Ice King said, apologizing.
"IK, you don't need to apologize. When you are trained you can always get hit, knocked out and so on. I'm okay. So, let's train tomorrow then?" — Finn asked and everyone agreed. Finn and Marceline went to the Candy Kingdom.
"So Finn, did you like how the Ice King trained us? I think now I am more good at fightings than before. Of course it hurts a little, but I'm fine and ready to learn new moves!" — Marceline said, flying among with Finn.
"I totally agree! I never knew IK was that good at sword fightings, but he is amazing at this! But what will we do with that man who's totally gonna attack us again?" — Finn asked.
"For now I think we both should stay at Candy Kingdom and never be alone. Two heads are more than one, right?"
"Yeah, if they're not cut off." — Finn said as they both laughed.
As Finn and Marceline walked to the Candy Kingdom, the man was watching them from the distance. 'You'll both the my might, the hatred of a real wolf! Your skills nor friends can help you now. So, bewa-are...' — the man thought, then turned into white smoke and disappeared in the sun.