Okay, this is my first story and I hope you like it. Since English isn't my "mother-language", there will probably be some grammar mistakes, so constructive criticism and suggestions will be welcome. Also, about corrections, show where I made the mistake before the suggestion, so I can correct it afterwards.

I had the idea for this story when I just read the next title of Adventure Time episode (The Red Throne), although I don't own Adventure Time, I imagined how it would be with more lemon and fiction, so M Rated for the lemons. Enjoy it!

Chapter 1: The False King

It has been a long time since Marceline defeated the Vampire King. In truth, she had to kill him or she wouldn't be a Queen and she wouldn't be "alive". It was hard for her to bear the fact that she killed someone, but he managed to get over it when she met Bonnibel Bubblegum.

Although Marceline is a queen, she didn't remained on the kingdom because she didn't like ruling things and being stuck in royal duties, so she has been living in other places until she decided to stay at Ooo in her current home in the cave. Unfortunately, for her, she still has to accomplish some queen duties, which she couldn't avoid, like attending the Grand Meeting of Ooo Royalty and going to the Vampire Kingdom once a year, at least.

She was a good ruler despites not being there all the time. All in all she didn't really need to be there all the time since the kingdom works by itself. A king or queen is only for political and democratic reasons, almost a tradition. And as all kingdoms, there will always be a person or group that wants to take the place of the ruler.

"Okay, what do you need me for?" asked Marceline nonchalantly while sitting in her throne

In the Main Room (or Throne Room), where she was, there were the ten most important beings of the kingdom after the queen, the Counsel. They were responsible for notifying the ruler about the rules and things he, or she, has to do. Also, they have the power to take the ruler out off his charge if the one don't follow the rules properly, however, it's not a immediate condition, he, or she, has a dead line to correct his, or her, problem.

"I hope it's something really important." She said while leaning her cheek on her hand

"And it is, highness." Said one of the counselors. "We all agree that you are a great queen, but…"

"But…?" she still was leaning her cheek on her hand feeling bored and a few curious

"But according to our traditions and rules you need to have a king, well, in fact, it needs a king and a queen, however, if the queen dies, the king can rule it by himself or until someone wins him on a fight."

"Okay that I knew, I won I fight against your previous king."

"Yeah, but you are a queen, and need a king."

"I don't get it."

"Well, I know it's confusing since you're the only female to win a fight against a king and it messed up with some of our rules, so what I can say is: a king and queen are needed not only to rule the kingdom, but to generate a son which will take their place after they leave."

"Yeah, but I… We are immortal, so why a son."

"According to our rules and traditions, the king and queen cannot remain in their charges for too long because of a need to change the ruler for some changes in the kingdom… As I said, when a king, without son, whose queen died has to "generate" a son to take his place-"

"And why can't he only find another queen?"

"It was possible, but since some clans used this rule to take over the kingdom, so it was extinguished… so, where I was…" he sounded impatient. "The king needs a son, then a woman from a royal family, who he can choose, can be a… a woman to only generate his son."

"Okay, what about me?"

"That's where the problem begins."

"This rule is only about a king, but there's nothing about a queen, I mean, this is sexist, but rules are rules."

"If I'm an exception, why can I do the same?" she asked. Obviously she wouldn't do such thing was getting pregnant only for a rule thing

"Yeah, we thought about it, to make this exception, but we needed to know the opinion of the other vampires." By this moment Marceline rolled her eyes in boredom. "It took centuries to find and ask for all the vampires' clans around the world, but the conclusion was that you need a king for now or you'll not be a queen anymore, and you'll have to choose one of us to take your place."

That information hit her on the face making her stunned. Marceline tried to stand up and float, but she only stood up and focused on not fell down since her legs were trembling. She didn't care about losing her royalty, but she didn't trust on the vampires, especially on the Counsel, to rule the kingdom. She knew that they would try to take over all Ooo.

"What do I need to do?" she was asking the obvious, but it was like she couldn't believe in what she had heard

"Firstly, you need to find a king and introduce him to the vampires. After, well, it'll depend on the folks."

"How much time do I have?"

"Hmm… Until the end of this week."

Marceline flew away leaving the kingdom. For the first time she was with her back on the wall and feeling powerless. How would she find a king within a week? She had no clue about it. The vampire flew to her home wondering a way out of this sticky situation.

"Maybe I can change this rule… Nah! I'll need the approbation from the Counsel and the folks. Or I can fake this. Yeah, they will never know because I only go there once in a year, so it's perfect! Hmm… but who would do this favor for me?"

She was so deep in her thoughts that she already was in her home. There were evidence that the sun was about to rise, so it was her bed time. Usually, those meetings don't make her too much tired, but this one specifically made her exhausted. She needed to rest and after she would search for a fake king to help her.

"*sigh* Home sweet home…" she turned the handle and entered her dark house. "Weird, I didn't remember turning all the lights of-"

"SURPRISE!" the lights turned on revealing Finn, Jake, PB, Lady Raincorn and other people coming from their hiding-places

"Wow! What the nuts!" she shouted in surprise. "What's happening here?"

"It's your birthday, Marceline!" PB answered hugging the astonished vampire

"Really?"

"Yeah. I don't believe you forgot it, Marcy!" said Jake while handing her a present

"I've been a bit distracted, but that's all right." She said with a smile. That made her happy and made her forgot about her problem with the Counsel

Marceline shrugged her problems off and the party started. It took place inside and outside of her house since it was going wild. Everyone were dancing, joking and eating a lot while the time was passing, but they didn't care, it didn't matter.

The whole party went wild and fun, but there was a moment of slow and sappy songs for the couples. Tree Trunks was the one who did it since she wanted some romantic moment for the couples and no one was able to argue with her, so it happened. The couples were the first to start dancing in an embrace followed by the others which found someone to dance.

Finn tried his chance to call PB for a dance, but she wasn't anywhere near that cave. He found it weird and decided to ask to Jake who was getting some punch for him and Lady, but in the middle way he bumped into Marceline. For a moment he thought about bypassing her, but he could see that she was sitting on the couch (in fact, hovering above it) while seeing the others dancing. Finn couldn't let his friend that way, so he sat next to her and broke the ice.

"Hey, Marcy. What a party, uh?"

She didn't say anything. She only looked at him with a smile. There was nothing to be said because she knew why he was by her and she liked the way Finn would always care about the others more than himself. Of course he was a bit childish even being a 17 year-old boy, but he was mostly mature. Within those years he grew up and discovered news things, but keeping his hero way.

"Why aren't you dancing?" she finally asked still looking at him

"Well, I thought about calling Peebles, but I can't find her."

Marceline giggled and replied:

"That's because she left a half hour ago."

"What? Why?" he seemed surprised

"Well, I think she told me something about solving some problems with the banana guards and that she was sorry for not being longer and stuff."

"Oh… Well, I-uh-I didn't know." He rubbed his eyes with his left hand showing his grass sword raveled on his arm

"What is that, Finn?" she pointed out to the sword

"That's my grass sword which I bought some time ago. Pretty cool… hehe" he stated while the sword raveled and unraveled around his arm

"Yeah, that's cool!" now she was looking at the dancing couples, but she was focused on other thing

"What's the matter?" he frowned and gently put his hand on hers

"Nothing that you need to worry." She joked and smiled at him

"If there's a problem," he said a bit loud, but not enough for be heard by the others, "I'll fix it."

"Don't worry, dummie," she smiled gladly for knowing there was someone who cares, "there's nothing to worry about. Enjoy the party."

"Okay then… let's dance." He stood up and get in front of her

"What?" she blushed nervously. "Why, Finn? You can call -"

"It's your birthday party, so it's not fair if you don't dance."

By those words Marceline blushed more and couldn't refuse but nod. Finn smiled and had forgottern about PB.

"Soo…" he knelt like a royal knight and reached out his left arm towards her. "May I have you for a dance my queen?"

"Well, I-" for a moment she was wordless, but an idea popped in her mind, all due to those two words: my queen. "Yes, you may." She followed his lead

Obviously his gesture wasn't serious at all. It was his manner to lift the tension and make the situation less weird for both of them. After the formality was done, they went to the dance floor and began their dance.

For some weird reason, the music, the slow movements and the embrace were making the vampire girl feel strange. She was feeling butterflies in her guts and a little heat on her face. Although she could say it for sure, she knew that she was blushing. It was a sensation that she never had within her entire "life". Not even with Ash she had the same feeling, but now she could get distracted because she had a problem to solve and Finn would be the solution.

"Uh, Finn?"

"What?" he moved a bit away showing his face blushing just like her

"I-I-" she stuttered a little with the flustered moment. For a second she slightly moved her lips towards his, but she stopped and kept on her plan. "You know I'm a queen, right?"

"Yeah, I think everyone here knows it."

"Well, what has maintained me a queen is rules," she saw that he was paying attention and nodded to show that, "but those same rules that make me a queen, also will make me loose it if I don't follow them… That's why I have been a bit uneasy."

"Oh, I see… Well, if you want, me and Jake can help you."

"Uh, Finn, I think Jake won't be able to help this time…"

"Why?" Finn seemed surprised, but his flustering kept the thing different, less explosive

"Well, to 'keep my crown' I need a king… And that would be you."

Finn was stunned since he has never ever thought that Marceline, his best friend, would ask such a thing for him. For a second he stopped dancing to look at her, so he could be sure about what he had heard before keep on dancing.

They didn't say a word. Both the sexy vampire queen and the brave hero continued dancing looking into each other eyes like they were hypnotized, in a trance in which they were unable to help. They couldn't explain what they were feeling, but they blamed it on the music and the place though they knew there weren't something more than just music and a romantic slightly dim place.

It was the first time in centuries that Marceline felt different. The last time was with Simon, but it was different from the current moment. It was the same feeling in a different shape. And that feeling carried her away to a weird, but magical place, so she was in a gaze for the nothing.

"Uh, Marcy." By this moment Finn seemed to be uncomfortable and their dance sync disappeared, but she didn't noticed it

"Say it, my king…" her voice almost seemed almost passionate in a way she could notice and get out of the trance shaking her head softly. "I mean, uh, say it, Finn?"

"Well, uh… Can you look around?"

She stopped and moved away from him and did what he asked for only to realize they were the only "couple" dancing in the middle of her living room, which was turned into a dance floor, and it made them blush redder than anything. The "worst" thing was that everyone was looking at them like they were a couple in a romantic moment.

"I-I-I think we should stop for a sec and talk about that plan, hehehe…" he suggested and laughed nervously

"Yeah, I agree… Uh, let's go to my room. There will be more private for us."

She grabbed his hand and led him to the stair which goes to her bedroom. At the moment they get to the stair, every was looking at them and Tree Trunks said out loud:

"Everyone! Stop staring! It's not educated! Let them love birds have some fun alone!"

Marceline and Finn blushed and their bodies froze. Indeed everyone was staring at them, but Tree Trunks made it worse and more embarrassing.

"Finn! Don't go to Tier 15!" Jake screamed in a whisper manner, but it only made him more flustered while the vampire giggled a little before blushing

They went to her bedroom quickly to avoid any other embarrassing comments. He entered her room and sat on the edges of her bed while she closed the door and floated towards him.

"Well," she began, "that's hard to explain completely, but I think I'd told enough."

"What?"

"The thing about me losing my throne?" she made it sound obvious and kept on. "You know, the rules…"

"Ah, I get it now!" he said a bit happy for remembering it, but also sadly for her losing her royalty

"So, what can I do?"

"Whoa! I had told about it some minutes ago…" she raised an eyebrow as if she was impressed. "Don't you remember?"

"Uh, well…" he was a bit red for not remembering it completely, not because of a simple distraction, but due to his distraction to Marceline's beauty. This made him strange since he's never thought about her in this way. "I was distracted by… by the music." He lied horribly, but she ignored it

"Okay… (ahem)" she blushed a little too since she kind of knew why he was lying. "I explain everything later, now I need you to know that you for being my king."

"Okay, Marcy," he shook his hands as a polite refuse, "I don't think I should."

"That's the matter, you need, you must… Or I'll be doomed. I need you, Finn." She blushed at the last words, but regained her composure

"Bu-But why don't you call other person?" he asked curious why he was the chosen one

"Because I don't trust anyone else but Bonnie and you, buut you're the only between those options that can be a king. Please, Finn?" she was nearly begging

"Okay, but I'm not cool with being a king. I hate it… Well, the last time I was a king it sucked."

"Don't worry, dummie, it's not for real, it's just to pretend to be a 'king', so I can keep my crown…" she made the quotes symbol with the fingers to emphasize that it wasn't a real king

"Oh, that sounds math!" he was glad. "What I have to do then?"

"It will be easy since you know me pretty well, just like me, so you only need to act as if you were my-" she pause as if the next word was weird for her, but she managed to continue. "m-my boyfriend."