NOTE:

Hi! This is my first Fanfiction on here! This is a Siren!Mikaela x Merman!Yuuchirou fanfic! (From Seraph of The End)

This story is like the whole vampires v.s humans thing in Seraph of the End, but instead of humans and vampires, they are mermaids and Sirens! :D

So this kinda starts out before they are taken, to the circus like in the title XD

This story was inspired by two fanfics i have read, i fell in love with them 3:

1) How to Deal with a Mermaid

by: DrPupleOrange

2) Hiiragi Cirque Ave. Freakshow

by: BlueberryApple & Vixenfur

hope you all like it! 3

Blood, Death, War.

That's what Mikaela's life consists of. Death for the countless lives lost of humans and Mermen. Sirens have killed many for either their own sick entertainment or, for survival. Blood, for the constant sight of his kind eating off the carcasses of their enemies, the constant reminder of how monstrous the species are. . War... for the Sirens are currently at war with the Mermaids for the reason of the Sirens wanting to be the kings and queens of the ocean.

Mikaela sighed, watching as his 'mother'; Queen Krul ordered for there to be extra guards to protect him.

'Why are they doing this I wonder? Oh right... Because freaking Krul and everyone in this damn kingdom are too protective about me wandering around.' Mika recalled as he maintained his emotionless façade.

Mika glanced around the room, looking at the same thing he saw everyday; golden pillars, golden thrones with rubies stuck onto them and the skulls of our enemies hanging on a large chandelier at the top of the throne room.

The ground had long pieces of seaweed as a rug and the ground was made of stone, with a few black-ish green plants growing in the cracks. You could almost think of the place as an evil underwater castle-which is what it was, in the mer-people's eyes.

"Mika, please go to your room now. It's getting late; you need your rest for tomorrow." Krul ordered, frustration flickering in her eyes as her sudden words towards the young blond Siren, snapping him out of his thoughts.

"Yes Krul." Mika mumbled as he floated out of his throne, which was of course, beside Krul's. He started to swim away from his 'mom' when he stopped, noticing Krul had at some point grabbed his arm, stopping him from swimming back to his room.

"Mika, please don't try to sneak away again. You are the Prince of the Sirens; we cannot have you be taken by the Mermen." Krul asked, with a slight strain in her voice as her dark pink ear fins drooped, hinting that she was worried for the prince of the Sirens- her adopted son's life.

Mika hesitantly nodded. It wasn't very often Krul acted like a mother to him but, it was enough. Krul let go of her son's arm, sighing as he moved away from her. "I... I won't anymore..." Mika mumbled before her turned, swimming away from Krul.

Mika was tired anyways, so he opened the large golden doors to reveal not one, but two guards waiting outside the throne room for him. Rene and Lacus, the two new guards that were going to watch over him for now on, he supposed he should say hello but, It really wasn't of a Siren's nature to be nice or very polite- Krul was an exception to him, being his 'mother' and all.

"Hello Prince Mikaela! We're your new guards!" Lacus grinned, showing his jagged Siren teeth as he tilted his head. His purple hair flowed with his movements as his purple and red splotched tail twitched while Rene silently glanced over at the blond prince. Mika's only response was a curt nod, as he closed the doors that lead to the magnificent throne room.

"Well, we should probably escort you to your room, right?" Lacus waved, waiting for Mikaela to swim down the hall as Rene moved out of the way for the prince to lead the way.

Mika sighed and swam in front of both of the males, keeping his emotions and thoughts to himself as he ignored the two rambling about wanting to eat after Mika fell asleep.

The blond prince glanced at the two guards again, taking in their appearances; Lacus had short purple hair and held it into a bun...? His eyes were red, like any other Siren, he had a two-finned purple tail with red splotches, purple ear fins and purple elbow fins with red tips. Rene also had some typical Siren spikes that connected to his fins together while he also had some on the sides of his tail, without fins.

Rene was a lot simpler with a two-finned black tail, black ear fins and black elbow fins. He also had typical red eyes and Siren spikes along his fins, but... For some reason, there was almost a gradient in his tail, starting with a dark grey to black; it would have been hard to tell if Mika wasn't soo observant. This Siren looked pretty tired due to the dark coloring right under his red eyes, but Mika didn't care.

Taking a right turn down the aqua marine hall made of coral, Mika sighed as he saw the entranced to his room in the underwater palace. Mika opened the large shell door to his room, and closed it before Rene and Lacus could catch up.

Mika swam over to his bed of seaweed and floated down onto it, and tiredly closed his eyes. He was officially done with this boring day of listening to his mother ramble about war tactics and his safety.

Mika sighed and rolled over and looked around his dark green room, in front of his seaweed bed was his sword, seethed. To the left was a rock table which was littered with shells filled with writing and nonsense, while to the right is the door. Mika rubbed his face and rolled over again.

Even though Krul told him to get some sleep, he wasn't actually doing anything tomorrow except battle training and royal lesions, which were absolutely boring…

He already knew how to fight, he was the best at fighting, other than his mom that is, and he already knew the Siren language, history and how to act like one. There wasn't anything to learn that he didn't already know.

'Maybe something exciting will happen tomorrow... Wouldn't that be nice...?' Mika thought before he drifted off, into a dreamless sleep.

"SHIT!" Yuuchirou exclaimed as fish and seaweed was thrown at him. Yuu tried to hide behind the table but the angry Mermaid flipped the table, trapping him under. His green tail got stuck under the table as the blond haired Mermaid swam over to the prince of the Mermaids

"What the hell did I tell you?! You can't just wander off on your own! What if the Sirens got you!" Mitsuba yelled, grabbing the black, messy clump of hair that belonged to Yuuchirou. Leaning over the fallen table, she lifted his face close to hers to attempt to intimidate him.

"Yuu, I gotta agree with Mi-chan. You were lucky we were patrolling around the area at that time! Otherwise, they would have kidnapped you, or even killed you." A brown haired Merman agreed, receiving a cold glare from the green eyed prince.

"I was just about to kick some Siren ass when you two showed up and killed them!" Yuu weakly protested as the two glared down at him.

"Yeah, we've heard that a million times before Yuu."

"Yuu, you know you need to be more careful!"

The two shouted at the same time, making Yuu flinch. Lucky for him, two others swam into the room- and by luck, he meant 'Shit. Guren and Shinya are here...' "YUUCHIROU! WHAT THE HELL IS WITH THE COMMOTION!? WHY THE IS THE ROOM A COMPLETE WRECK?!"

"U-um... It was their faults." Yuu nervously blamed his friends for what they did.

Shinya sighed and patted Guren on the shoulder before watching the king swam over and punch poor Yuu in the cheek. "OWW! THE HELL WAS THAT FOR?!" Yuu shouted, rubbing his sore cheek.

"ANSWER MY QUESTION IDIOT!" Guren shouted back as Mitsuba and Yoichi slowly inched away, towards the door, holding back their giggles.

"I DIDN'T DO ANYTHING WRONG DAD!" Yuu swore as Guren punched him again.

"Guren, I think that's enough..." Shinya's voice rang out, silencing the two hot-headed Mermen. Guren sighed and got the table off his sorry excuse of a prince and moved away.

Guren had short black hair and purple eyes, his tail was one of beauty; a four-finned purple tail, two at the end and two on the sides of his tail.

Yuu sighed in relief, thankful Shinya was here to calm down his husband. Shinya is a Merman with short, silver hair and dull green eyes, his three-finned tail is also the same color as his hair- silver, but it also has stripes that seem similar to those of a tiger shark's on his tail. Two fins are at the end and the third is at his back, going down the middle of his back to the middle of his tail.

"Fine, Yuu. Just go to your room, I don't want to have to deal with until we head out." Guren groaned, massaging his head as he sensed the teen swim past him and shut the door to the room with a big bang.

Mitsuba rolled her eyes as the two followed the frustrated teen out of the room while Shinya swam over to Guren, nuzzling his partner. "It will be okay Guren... Calm down, we need to figure out how we will get into the Siren Capital. Then, you can beat the shit out of your son. Okay dear?"

Guern grumbled a bit before nodding. "Alright, fine."

Mika woke to the sound of shouting and weapons clashing. Gasping, he pushed himself off his bed and quickly swam over to the door to his room to find it was locked, Mika growled and smashed into the shell door, breaking it open.

Mika winced as his shoulder ached, turning a little purple from body-chucking the door open 'great, now I have a bruise…' Mika grumbled before looking around the coral hall, catching sight of some siren blood and mermaid blood mixing in the water.

Touching his wounded shoulder, he glanced around again, his red and blue eyes glancing around to figure out what was going on until he heard some shouting along the lines of 'The queen must be over here!' or 'I think I heard something break over here!'.

Mika was pretty sure that those voices sounded too... 'nice' to be coming from other Sirens, so he swam back into his room and grabbed his sword, darting out again to come face-to face with a Black haired mermaid with enchanting green eyes he's never seen before.

Yuu was pretty sure he was going to die this mission; he was tasked with killing off any Sirens that he and his team came across. They were going to try to put an end to the Sirens, so they departed during the night to take them by surprise in the morning which, is what they did.

Yuuchirou and his Squad: Mitsuba, Yochi and himself, were to patrol the right wing of the palace while the other groups of the army were to go to the left and central wings and meet up outside the palace to help defeat the rest of the Sirens.

But of course, luck was NEVER on his side, and he ended up losing his squad, His squad had turned to somewhere when he wasn't paying attention and when he realized, he was somewhere else with no one with the poor prince.

Why was the prince zoning out? Because of the suffocating blood mixing into the air. It was making him utterly sick, he did not want to know whose blood it belonged to-probably Mermaids from the bodies in the hallway...

But he as he swam through the coral halls of 'scream to death as a Siren ambushes you', but he heard a voice nearby, probably a guard or his friends but, he didn't notice two of his friends swimming up right beside him as he cautiously swam forward, gazing over at every corner and turn.

"Hey, I think over there is the entranced to the Queen's throne room..." Yoichi mumbled, bumping his Brown tail on Yuu's green one, making the latter jump in surprise.

"There you guys are! Wait... Where is Mitsuba?" Yuu exclaimed, tilting his head in confusion.

Suddenly, right after Yuu's question, they heard a crashing sound and instantly, his forest green fins flared in panic and he glanced around cautiously.

"Hey I think I heard something over there!" Mitsuba shouted,as she suddenly appeared beside him, Yuu nodded in agreement in response after he jumped again.

Yuu lead the way, taking a left turn with fear prickling at his skin as he slowly turned to the right to find a golden shape swimming his way, crashing into him, sending them both tumbling through the water.

Yuu groaned, touching his head and opened his eyes to see pretty, hypnotizing red and blue eyes staring back at him. "Y-you're a Merman!" The Blond boy jumped, quickly using his tail to move off him.

Yuu frowned, taking in who was in front of him. The boy had fluffy-looking short, blond hair that can easily be mistaken for gold in the right light, but it was more of a platinum-gold color. He had the most mesmerizing eyes... sectoral heterochromia of bright red and sky blue. He had the cutest looking ear fins that were the same color as his hair and his three-finned tail was also platinum-gold, two fins at the end and one at the back of his tail. But instead of them just being fins, they were attached to spikes and that is where Yuu realized he was staring at a gorgeous Siren- his enemy.

"Yuuchirou! Are you okay?" Yoichi gasped, darting to his side as Mitsuba got ready to fight the angelic-looking Siren.

"I-I'm fine." Yuu groaned, blushing slightly as the Blond glanced at him.

Mikaela swore, it was hard to not look at the merman in front of him. He had black, messy hair and amazing, vibrant green eyes. His five-finned tail was of the same color as his eyes, he had two fins at the end, two on the sides and one at the back of his tail- he really did look of royalty.

But Mika was snapped out of his thoughts as the Mermaid in front of him took out her large wepon and positioned to show she was ready to fight.

Mika snarled, baring his teeth, which are meant to rip out flesh of humans and Mermaids alike. He also drew his sword, knowing his claws and fangs will not be enough to kill a mermaid with a weapon.

"Stay away Mermaid. I don't want to hurt you..." Mika growled, ready to strike if she moved.

"As if, I will never back down to a Siren!" Mitsuba grinned, moving her Weapon towards him with the intent to kill the blond.

Mika's eyes narrowed and he swum over the large weapon as he tried striking her with his sword but she deflected it, she tried doing a counter attack but he dodged. Soon they were moving at lightning speed through the water, attacking and blocking each other's blows.

Mika growled and darted forward, biting into Mitsuba's arm, causing her to scream and momentarily drop her weapon. "Mitsuba!" Mika heard the prince yell as he swam at him, using his full force to body-chuck him into the wall of the palace.

Just as Mika hit the wall, he felt the black haired Merman pin him against the wall, yelling at his companions to leave. With a great amount of yelling, they did. Leaving him and the Merman alone together. "Who are you?" Mika commented, recalling that the brown haired Merman called him 'prince'.

"... I'm Yuuchirou. How about you?" Yuu answered, tilting his head slightly before letting go of Mika.

Mika nodded as a response to now knowing the pretty Merman's name but raised a brow at Yuu. "Mikaela. Why did you let me go?"

"I... Dunno, I guess I don't feel like you will hurt me right now." Yuu mumbled, rubbing his arm as if he was trying to calm himself.

"... Alright then? But what are you doing here?" Mika asked, blushing as he turned his head away when Yuu looked at him.

"Oh... right. Well, we were tasked to finally put an end to the war by-um, killing Krul. My squad were to defeat any Sirens in the right wing of the castle-" 'Shit, why am I blabbering out the plans to the enemy?! Great. Me and my stupid big mouth.' Yuu mentally slapped himself before returning his attention to the Mikaela.

Mika frowned "Then why aren't you ?"

"What?"

"Why aren't you trying to kill me? I'm a Siren, I'm probably your biggest threat to your survival right now." Mika glanced back at Yuu with a frown on his face.

"I don't want to kill you. I don't know why though..." Yuu blushed, squirming at Mika's gaze.

'He's kinda cute when he's blush- What am I thinking?! He's a merman! I should be killing him!' Mika blushed a bit more, but nodding as an agreement before they both heard shouting.

Mika saw as Yuu whipped his head over to the left, seeing there were Mer-people coming their way while when Mika looked to the right, Sirens were swimming in their direction, and they were caught in the middle.

"Mikaela!" Lacus cried as he quickly took the blond's hand and dragged him out of the way, while a Merman guard doing the same for Yuu before both sides clashed, spilling eachother's blood, red blood mixing with black.

"What the heck are you doing?! Why didn't you kill that Merman?!" Lacus angrily asked, shaking Mika's shoulders

"I don't need to explain myself to you Lacus." Mika answered, flicking the Guard's hand off him as he swam towards the throne room 'let the guards deal with the Mermaids.' Mika swallowed, worried about Krul.

"Krul?" Mika gazed around the golden throne room to see Krul snarling at a royal-looking Mermaid with a purple tail, both had their weapons drawn out and Mika noticed that both were covered in wounds but still floating in the water, determined not to show that they either of them were weakened, that they only had small cuts and wounds- which was NOT the case..

"I'm not going to be defeated by a measly Merman, don't worry Mika." Krul stated, knowing her heir was in the room. Before either Mika or the King of mermaids could register, Krul sped towards Guren, stabbing him in the stomach.

The king choked, purple eyes wide in surprise as he coughed out blood, the red substance floated and mixed in the water around them, turning the water red, then transitioning to pink as the merman blood mixed in the ocean water.

"N-nice one… Krul…" Gruen grunted before he swung his sword. Krul managed to take her sword out and deflect the blow but not without a cut on her arm, Mika's eyes widened as he saw black blood come out of the wound before it closed a little, keeping the precious Siren blood in.

'At this rate, they will either kill each other or one will be the victor… I can't allow Krul to die!" Mika growled before he charged, drawing his sword and stabbing Guren in the tail.

"AARRGGG!" Guren shouted as he felt the pain of a sword stabbing into his tail, while Krul took the opportunity and went for Guren's neck, but she was deflected by a new Merman; Yuuchirou.

Mika's eyes widened as Guren spun, managing to whack him into Yuu, sending both of the princes tumbling through the water. Mika stared at the black haired prince in surprise as yuu did back to him.

"You're still here?!" Both of them questioned at the same time.

Mika gulped, nodding while Yuu got off Mika. "Mika! Fight the enemy merman! Not fall into him!" Krul growled before her and Guren fought each other blow-for-blow.

"Yuu! Show that Siren Bastard what we Mermen are made of!" Gruen shouted, deflecting and attacking the Siren Queen.

Mika and Yuu glanced at their leaders and back at each other before mika grimaced, he attacked Yuu, swimming towards him at full speed, he managed to hit Yuu in the arm, drawing blood and hitting close to the bone, Mika stopped he was behind yuu and turned around to face Yuu again.

Yuu Yelped but quickly reacted, striking Mika in the shoulder. Mika growled, swimming backwards, near the ceiling While Yuu swam after him.

Mika got ready for impact with the ceiling and once he touched it, he dodged Yuu's Sword and stabbed the Merman in the back, but wasn't able to get very far in before Yuu twisted around.

Yuu winced but managed to get his arm to swing at the Siren, shallowly slicing Mika's skin on his chest, cutting a few scales as well. The two princes kept fighting, soon exiting the palace from a opening near the ceiling and fighting over top of the Siren kingdom; it was littered with bodies of Sirens and Mer-people alike, dead and alive. Still and fighting.

Mika dodged another one of Yuu's attacks with a twirl in the water, he aimed to take Yuu's head off but the other seemed to be doing the same thing. They both panted, stopping their battle as they stared into each other's eyes, daring the other to slice the other's head off, both of their swords were at each other's necks.

As they were having their stare-off, they both didn't notice the net coming their way until it was too late. "M-mikaela! There's a net!"

Yuu yelled as he swam as fast as he could away from it, Mika turned around and did the same once he saw Yuu was right, a huge metal net was coming their way.

They both swam downwards, attempting to escape the net but it was too quick and scooped them both up, Mika squeaked as Yuu was pushed against him from the pressure of the net's speed As Yuu struggled to get out.

Mika screamed out for Krul and tried to cut the metal net but only hurt himself as they were slowly reaching the surface, Krul seemed to have heard Mika's cry and darted out of the castle, followed by Guren.

The two rulers swam the fastest they could, both afraid they would lose their heirs, but it was too late. The boys were being lifted out of the water and into the air.

"KRULLL!"

"GUREN!"

-To be Continued...-