Marriage Allegation

By Otaku no Baka a.k.a. the Fujoshi

I apologize before hand. I have a million things I SHOULD finish and yet here is another new story. -Bows- This one is a long one too! I promise to finish everything (eventually.)

I recently got into this series along with Magi so I decided to put my fingers in the water and write fanfiction of my favorite pairing. It was lacking, especially when it came to M rated fics.

So here is my attempt to make an Amaimon/Shiemi romance story. It will be M rated eventually but its a T at the most so far. I thank 'V' for betaing this story. If you find ANY mistakes let me know since I'm paranoid about the names/otherwise. I scanned this story a million times and still don't feel confident about it.

Random A/N: Mephisto has a Flandre Scarlet Touhou fan, which does indeed exist.

Warnings: None really outside of this pairing.

I don't own Ao no Exorcist a.k.a Blue exorcist! If I did this pairing would be canon, Rin and Yukio be heck

Amaimon was bored to say the least.

He was perched in the window of his brother's office, staring over the grounds as the students came out of the building to Cross Academy. From what he gathered it was almost summer and the esquires were in the process of mock exams. He had on occasion seen his younger brother coming out looking weary, so the Earth King assumed that mock exams were actually another code name for sadistic punishment.

Humans were so weak but amusing.

He bit his long claw like thumb nail, thinking fleeting thoughts, ideas settling on one subject in particular. The memory formed in his mind and started to expand, realization hitting him at the weight of his past actions.

"Aniue, I think I might be married."

Mephisto, who was trying to relax by eating shaved ice at his desk, spat out his dessert on the table. "What Amaimon?" He turned wildly in his chair toward his younger brother near his office window, momentarily forgetting etiquette.

Amaimon didn't reply, and instead remained in the window, his back facing his brother. he was rocking his boot clad feet on the sill slightly.

"In demon terms I said the verses to claim a mate and even tried to take blood, but I didn't finish the kiss. Younger brother stopped me."

Mephisto racked his brain on the incident in question and a mix of horror and amusement crossed his mind, but he kept a neutral expression. "So you're saying that you claimed one of my students?" He didn't speculate it; he was in the front row when his otouto did 'that.' The problem was that he hadn't thought that Amaimon went that far or took it that seriously.

Amaimon nodded his head slightly, still fidgeting. "She's my finacee but we're not married yet." There was a tone of slight disappointment.

Mephisto started putting together an idea in his head and continued to eat more shaved ice until Amaimon spoke again. "I think I want to marry her aniue."

The Earth king wasn't like his older brother of time Mephisto. He didn't engage in flings and summer romances but thought it was past the period to settle down.

He knew how sex worked and even engaged in various kinds of self pleasure in the past but he personally never tried it before. He would rather play by beating demons to a pulp, slaughtering various humans in glee, or engaging himself in the world of Assiah. So this concept wasn't entirely new but it was treading on dangerous ground.

Amaimon didn't want to be like those sappy worthless humans who died over their lovers and lost their identity from being infatuated. Still the idea of claiming a wife made his blood stir outside of combat. And it was his fault for going too far with teasing his younger brother; he would have to claim responsibility.

The green haired demon leaped out from his brother's open window and landed on various landings before going towards the front gate of True Cross. Now his brother would had thrown a fit and threaten him if it was a busy day but since it was practically summer vacation he was more lenient.

He landed outside of the gate, startling a few people. There was his otouto as well as his blond interest. His aniue told him that she was attending True Cross Academy full time, the same year as the older twin.

Stubborn otouto glared at him; Amaimon sensed his brother's hostility rising as he gripped his sword holder. His fiancee only glanced at him, curiosity and weariness behind her green forest eyes.

"Otouto and..." He put a finger to his lips. "I didn't get your name. I apologize about last time; I am Amaimon the Earth King."

His fiancee gasped and blushed slightly. "It's Moriyama Shiemi." She mumbled in a whisper, turning away her head. The demon king thought it was cute that she was modest. He wondered how long would it last after they finalized their vows.

"Shiemi-san." He tasted the words around his lips; trying to squash down the fire that he refused to rise further in his veins. He was sort of glad that Rin stepped into their conversation.

"What do you want?" Blue eyes glared at him and the Earth King rocked on his heels, hands in his shorts pockets. "I thought I killed you."

Amaimon wanted to laugh at how foolish his brother was. Surely a half demon who didn't understand the concept of his powers killing him, the seventh prince? He was annoyed that his brother used him again but at least aniue let him come back under the rouse of a hamster as punishment for acting out.

"I came to talk to my fiancee; is that so wrong?"

"Fiancee? What the hell are you talking about?"

Amaimon picked up his woman's gasp with his pointy ears, but continued to regard his younger half brother.

"She's mine otouto; I did the vows of passage for a demon."

"Are you serious?" Rin's face fell and the green haired man nodded.

"Yes; she would have become my wife if I had kissed her and bit her tongue as well as my own, thus sharing our life blood." Which was what he was going to do before Rin hit him.

"You're lying."

Amaimon shrugged again, already bored with the conversation. "If you doubt me ask Aniue." He pulled out a strawberry and banana sucker and put it in his mouth. His fingers were itching to hit Rin but it would be pointless, his brother would laugh and beat his ass for acting out and he wouldn't look good in front of his fiancee.

He had already messed up the start so he had to at least work towards making his way back into her good graces.

Rin growled and scuffed his foot. "Fine." Grabbing the blond girl's hand, the two marched back into the school with the Earth King on their heels.

Amaimon leaned outside the doorway as Rin argued with his brother in his office.

"WHAT!" A scream rang out as Rin growled at Mephisto, slamming both hands on his desk. He was already tired from waking earlier than usual, taking exams all day, and then finding out that the Earth King was still alive and just as annoying as usual.

Mephisto sighed, fanning himself with a Japanese Touhou fan of Scarlet. His cravat was slightly undone along with his blazer and his hat sat next to him. "Yes he was correct; my silly little brother has bonded with Moriyama-san."

"But but...I thought it was impossible! How in the world-"

"You should know from your studies that bonding with a demon is different than a human in terms of marriage. If he had finished the passage, then there would be nothing I could do about it and Moriyama-san would have become Amaimon's wife."

Shiemi was silent, thoughts whirling in her head. She couldn't believe the demon that had put that bug in her during the camping trip was her betrothed. She loved Yuki-chan, so finding out that she was stuck with another male had her heart hurting.

Mephisto sighed as he felt his brother's flames spike up, his tail wagging in agitation. Didn't he tell him to hide his tail so that it wouldn't attract attention and it was a weakness? Sure the student body knew about his secret but still. "All a demon needs to be with another is to say the words of devotion and have both parties agree on it. Even if it was under duress, I can do nothing towards annulling it."

"Moriyama-san." The demon of time regarded the silent blond girl. "It will be alright; the passage was incomplete so you are not Amaimon's wife yet. I will try to find a way for you to escape this."

It was a half lie; there was one way, but Mephisto knew Amaimon wasn't going to agree to it. That, and he thought this would be an amusing show altogether.

Shiemi nodded her head and Rin snorted, annoyed. "This isn't over yet clown."

Amaimon perked up at the silence and a minute later the door opened again. He was going to say something towards his wife in question, but Rin pulled her away from his reach.

The half demon put an arm around her shoulders, and for the first time, Amaimon felt frustration. His normally passive features turned into a frown and he balled his fingers into a fist, cutting his palms in the process. He had to bite the inside of his cheek to restrain himself from lashing out.

"Come on Shiemi, let's talk to my brother and see if he can help as well. I haven't seen him lately, but maybe we could try to find him together." The woman nodded, still lost in her own thoughts and world. Rin turned and gave Amaimon another glare before leading her down the hall and away.

The Earth king raised his bloodied hand towards his mouth, biting on his nails once more. He was about to follow them when Mephisto put a hand on his shoulder.

"Amaimon."

If it wasn't for a small last minute sense of reason he would have ignored him. "Yes aniue?"

"Come inside, I will give you advice." Mephisto still cared for his brother so he decided to at least give him assistance on how to court women.