A/N: Thank you for waiting guys.
There's a line in this chapter that's a nod to another crossover for Percy Jackson and Fairy Tail
In the outskirts of Oak Town a branch of the famous wizard's guild Phantom Lord can be located. Inside several mages can be seen partying, eating, and consuming copious amounts of alcohol. The door of the guild suddenly opened as a young teen walked in, raven black hair swaying from the breeze wafting in through the doors. Clad in a heavy dark brown leather trench coat over black shirt and armour, he's wearing course blue pants and greaves and boots made of black Iron; a sword emanating a chilling nightmarish aura is strapped to his side. He walked forward in a purposeful stride not even glancing to the mages casting him suspicious looks, he was stopped in his tracks when five mages with scary demeanours blocked his way.
"What is your business here?" the man in the middle asked him forcefully
"I have an appointment with Phantom Lord's Master Jose Porla, ranked six of the ten wizard saints." The young man spoke in barely a whisper
"What is the approval you receive?" the man asked again
"The ruler of the shades stands atop a mountain of corpses." the visitor answered
The five mages stepped aside as the visitor continued on his way.
Percy was relaxing in his quarters aboard the Atlantis; they have just let down Ichiya and Eve at Blue Pegasus; Jura, Gordo, Erza and Amethyst were above deck discussing about Amethyst's possible membership in Lamia Scale. Erza has also offered to train the dragon slayer in armed combat to which the other woman readily agreed.
Just as he was about to fall asleep he felt a spike of magic on the corner of his room, he turned to see shadows gathering and his pale, black-haired cousin step out. Nico looked at him with a hard expression which slowly lightened to a small smile.
"So how's the dark side?" Percy asked as he moved to get his cousin a glass of scotch, hey you save the world a couple times and Mr D will give you permission to start drinking his own brews.
Nico snorted at the horrible Star Wars reference.
"Horribly tiring, especially when a certain someone gives me more things to do" Nico answers levelling his cousin with a mild glare as he accepts the glass. He took a sip before continuing.
"Your new friend is right, my skeletons found a Lacrima underneath the Island. Although it's not big the magic contained in it would still be more than enough to turn half of Fiore into a wasteland."
"What did you do with it?" Percy asked. Nico proceeded to toss a golden stone about five inches long and two inches wide, it looked like a well-polished gem stone
"I gave it to you" Nico simply answered as he finished the glass of Scott
"What's wrong Nico?" Percy asked "you seem to be really sleepy today"
"I created a full functioning doll a couple hours ago with about a quarter of my magic power; I'm not used to the power drain I guess." Nico poured himself another glass
"According to my investigations there seems to be no human that can match us here, the dragons would probably give us a run for our money though." He continued
"The dragons are gone though" Percy poured himself another glass
"Most are, but the surviving ones are in hibernation. According to my data they're hiding until a certain dragon can be killed."
"So they're scared then?"
"Of another dragon named Acnologia. Master Hades told me he was the dragon that killed other dragons."
Percy let out a slow whistle clearly impressed.
"Well I have to be going Percy, I just came by to give you that gem," Nico waved as he approached the perpetually dark corner in Percy's room.
"Take the bottle; I know how much you like old Scotts." Percy lied down on the bed as Nico summon the liquor bottle on the table to fly to his hand. "Take care of yourself, Death Breath"
"You too Kelp Head" Nico said as he melted into the shadows
A loud knocking woke him from his nap, Percy groaned as he stood up and stretched before opening his door.
"Where home" was Erza's short message
He quickly took over the ships control and landed it gently in the dock at Lake Scillora built specifically for the Atlantis. He locked everything, down told Mrs. O'Leary to guard the ship and leapt off the ship without bothering to draw the ladder with Erza dismounting in the same manner.
They pushed open the doors of the guild and took note of the regular brawl.
"Welcome back Erza, and you too Percy." Mirajane greeted.
That brought on a loud scramble from the guild as they look at the doorway to an amused Percy and a seething Erza, in less than a minute everything suddenly went from destroyed and dirty to immaculate and peaceful. All the mages as sitting ramrod straight as Erza walked on choosing to ignore the earlier commotion; on the other hand Percy was only able to take four steps when a loud voice called him.
"Percy! Fight me!" Natsu yelled in his usual loud voice.
"Jeez Natsu, haven't you heard of an indoor voice?" Percy asked as he started to follow Erza to the guild master sitting at his customary place at the bar. Natsu didn't seem to be capable waiting however as he charged Percy with flaming fists.
"Fire Dragon's Iron Fist!" Natsu sailed towards Percy ready to strike his lights out. Percy just gave out a sigh as he charged his fist with magic and gave Natsu a mighty uppercut sending him flying through the roof with happy following him.
"Natsu!" the little blue cat called out
"Ara, ara" Mirajane said
"He never learns" Grey commented
"He's a Man!" Elfman announced
"That's starting to get annoying Elfman," Cana began "and Grey your clothes" she mentioned, sending grey into a panic to find where he tossed his shirt and pants.
Everyone was laughing and even Percy was chuckling a little bit at the guilds usual banter. He reached Makarov just as happy got back carrying a passed out Natsu in through the hole on the roof.
"I heard from the king himself," Makarov announced "great job the two of you. He sent a bonus of two million jewels for the guild." Makarov gave a very goofy smile "Anyway, Percy I want you to come to my office we have something important to discuss" the old man jumped from the counter and walked toward his office.
Percy exchanged a shrug with Erza and followed Makarov.
"My boy, I received a message from the council." Makarov stated surprisingly serious for once
"They would like to offer you a special job; it's a decade quest from the council's board which no one has ever returned from alive. Based on your performance from your past job's and the different types of magic you use they feel that you would be the best candidate for the mission." Makarov said
"What's the mission gramps?" Percy asked
"It's a subjugation of monsters on the gulf of Corea; no one knows what it is because everyone that has ever seen it has died, but they have a suspicion of it being a colony of sea serpents. Because of them no ship dares to sail through that part of the Ocean and the people of the Sevii Islands are suffering for it" Makarov said
"However this is a decade mission and only S class mages are allowed to go, so if you choose to accept I will have to promote you into an S Class mage. " Makarov gave a small sigh "The gulf of Corea is very far from here being located in an entirely different continent, since we are a Fiore based guild you will not be allowed to bring the Atlantis and you are to cover up your guild mark."
"You said people are suffering right? If I have the power to make a difference why would I not take that chance? I am Percy Jackson, a Fairy Tail wizard; I will not turn my back on those that needs help." Percy finished with a smile.
"I wonder if it'll work" Nico mused. He's trying to develop a new attack, something easy to prepare but devastating for when his back is right against the wall. He and Percy has been trading ideas when Percy thought of a certain TV show back in their world and they've been trying to recreate some of the attacks they saw there.
So far Nico has learned how to paralyze anyone by touching their shadows, he has learned to create a fully functioning clone by calling a skeleton and coating it with a mist form, right now he's trying to learn to create a sphere of pure magic with chaotic rotating axis. Percy has mastered the later one pretty quickly and has learned to channel his elemental affinities creating a powerful wind shuriken, a lightning drill, and a water maelstrom. Nico's now trying to see if he can mix that attack with any of his affinities.
He looked into the perfect chaotic magic sphere which Percy named Chaos Sphere instead of using the same name in the show; slowly he started to pump shadow magic into it, it started to have a dark tint though the white misty colour is still very visible. He increased the magic and the attack started to turn pitch black despite the rotation still being visible, he upped the shadows another notch when the sides of the ball started to develop spikes like a flattened bottle cap. He then rushed and struck a wall of the guild hall he's in with his new spell.
"Chaos Sphere: Ravaging Shadow!" the moment the ball of shadow struck the wall is expanded to about his height in diameter, Nico watch the wall vanish in the exploding shadow as the explosion itself buffer him with incredible force, he might have been forced back if he hadn't used his own shadow to stick to the floor. The sphere in his hand disappeared after five seconds revealing the incredible destruction it has dealt, any matter inside the shadow disappeared as it was ripped apart in a cellular level, everything around the sphere were buffeted and blasted away effectively leaving a crater twenty feet wide.
"I like it" Nico commented "if just a little bit of power can do that, imagine how much devastation it will cause when I really try." He finished as he flexes his hand open and close.
He flipped his hood up and raised a black scarf to cover his face; he's dressed for stealth with a black as night long sleeved garb, black pants and boots. He ran outside turning around after getting a good thirty feet from the door way.
"Time for a real world test run, Shadow Angel!" Nico formed wings made of shadow and took to the air. He created another shadow ball pumping more magic though the size stayed the same.
"Chaos Sphere: Ravaging Shadow!" Nico hurled the small shadow ball which exploded to ravage anything within twenty feet in diameter of the hall. A single purple flag was buffeted to the sky as Nico swooped and grabbed it, continuing forward to his apartment in Magnolia with his eight Phantom Lord flag in his pocket.
He dispelled his wings when he was still a good distance from Magnolia preferring not to let the populace discover his magic. He extended his senses all the way to Fairy Tail's guild hall before realizing Percy was on his long job. Nico continued walking until he got to his apartment, he locked the door and made sure the curtain is closed, stretching out his senses he made sure no one can hear the conversation he's about to have. He lifted a loose floorboard from under the couch and pulled out a crystal ball which is a communication Lacrima in actuality. He activated it and a slender old man with a very long beard, the face is shadowed and only a single shining red eye is visible.
"Master Hades" Nico greeted respectfully "I have wiped out all eight of Phantom Lord's branches that attacked Mammoth Skull, there were no survivors."
"Magnificent job, what did you gather from Phantom Lord?" Hades asked the young demigod
"The master, Jose Porla, has enough magic to challenge Bluenote; the five S-Class wizards, the element four and Gajeel Redfox would not even get Azuma excited." Nico reported
"Hmm, we will let them be for now," answered Hades as he run his hand down his beard "I have no new mission for you at the moment, rest and gather your strength"
The Lacrima disconnected after that.
"Sea serpents my ass" Percy grunted as he avoided a torrent of water that surged just below him with enough force to carve through mountains. It took him a good eight months to get to the part of the sea where the monsters are, he ended up commandeering a pirate ship as everyone else is too scared to sail in that part of the ocean. All he had to do was tell the pirates he's sailing to the island of monsters with or without them and the entire crew leapt of the starboard side and swam to shore, preferring jail over death.
Turned out they had a good reason too, It's not a sea serpent that was attacking the boat but rather a massive dragon; easily a hundred feet tall, navy blue scales with light blue underside, it's tail ends in a fish tail, and the membrane of the skin on the wings is rainbow coloured and slightly transparent. It introduced itself as Quanrian the Ocean Dragon.
"Stay still human!" the dragon roared as she flapped her enormous wings and launched herself towards Percy with impossible speed.
"That would be stupid" Percy simply replied, creating a sphere of air around him so he simply bounced and rolled of the side when the mighty dragon struck. As he passed behind the dragon it used its tail to smash Percy's air sphere which sent him hurtling towards the earth of the island at breakneck speed. Percy summoned the water in the air to him and dissolved into water himself hydro travelling above the dragon before he slammed on the hard packed earth.
As he appeared he created a sphere of pure magic with multiple rotational axis about six feet wide, he charged his water magic into the sphere and created a condensed whirlpool of destructive proportions and slammed it into the Dragon's back between the wings.
"Chaos Sphere: Atlantic Cyclone!" it exploded a storm's worth of water enclosing the Dragon with water tendril's powerful enough to cut steel. Percy was about to celebrate when he saw his spell be sucked in, Percy felt like hitting himself, he forgot that dragons can eat their own elements.
"You never had a chance human, no water magic will stand against me!" boasted Quanrian, Percy saw the dragon intake a particularly large amount of air and fired his Ocean Dragon's Roar. Percy used his wind magic to fly to the side and rushed towards the dragon once again, he was about to reach Quanrian's side when the dragon swiped his arm up and caught him in surprise as it struck him with incredible force sending him up spiralling out of control. As soon as he righted himself lightning sparked on his right hand, he gestured towards the heavens and shot lightning on a cloud above and manipulated ethernano in nature making the cloud swirl and turn dark, sparks of natural lightning surged through the magically created cloud formation.
"If water won't work on you, then I'll just use something else." Percy drew riptide and willed it to turn into a trident, channelling his magic, he swirled it around and stirred the magic in the air even more. Lightning struck the tips of the trident and Percy pulled it back in preparation for a throw, Quanrian began to fly to the right side in an attempt to dodge but lightning from the heavens struck the dragon forming an electric lasso around its neck. It immobilized the Ocean Dragon when trillions of volts surged through its body eliciting a scream of pain. Percy launched the trident towards the dragon which struck the same time lightning rained and bombarded the dragon, the earth, and the ocean with enough force to turn everything to dust.
"Divine Lightning: Court of Judgement!" That single phrase was heard before the world exploded with light.
One year and five months, that was how long it took for Percy to complete that stinking job. It wasn't even the actual job that made it took so long but rather the travel to the site and back. He has already met up Yajima form the magic council and received his pay, though what really made him happy was when Yajima gave him a good meal. He was able to persuade Quanrian to go back to hibernation after kicking the stuffing out of her; that was a very humbling experience for Percy as that was the first time he almost died in this world. Quanrian told him about Acnologia, the dragon king that was once human, and he decided to get even stronger in case he meets the great dragon. Apart from the dragon itself Percy also met and fought several powerful mages and got some ideas for new spells he can use and even a few he can teach to Nico.
As he got close to the guild hall he saw a man in a weird blue get up; complete with a scarf, a hood, and even leg flairs. Several staves where on the man's back and one was on his hand, as they passed each other both nodded in greeting with the other. Percy recognized him of course; he was one of the few that Mystogan can't put to sleep. As he entered the guild he saw that Laxus was riling up the other members, again.
"Why don't you get up here?" Laxus goaded Natsu. The dragon slayer was about to run forward when someone grabbed him by the collar and tossed him to the side.
"Now, now Natsu, you know gramps will flatten you if attempted to get up the stairs right?" Percy asked in a joking tone while Laxus snorted.
"PERCY!" most of the people in the guild shouted. Natsu leaped to his feet in less than a second.
"Percy?!" A blonde girl that Percy didn't know seemed excited for some reason "The one that became an S-Class Wizard in less than a year?"
"Indeed that's him" Mirajane answered. "He's another one of our most powerful mages, even more powerful than Mystogan or Erza."
"Than Erza?!" Lucy gaped at the teen, which looked totally non-threatening.
"Your back, Percy fight me!" Natsu launched himself towards Percy with a flaming fist, Percy merely caught it with in one hand, and he released a small pulse of magic and putout Natsu's flames. Lucy's jaw dropped at how easy he seemed to find Natsu to be.
"I'll take your challenge tomorrow Natsu I just got back." Percy smiled at the Dragon Slayer. Natsu cheered like he just won the lottery,
"I'm totally gonna beat you up tomorrow!" Natsu yelled, while happy fist-pumped beside him
"Aye sir!"
Laxus let out a laugh from the second floor.
"You don't stand a chance Natsu, much like how Percy doesn't stand a chance against me" Laxus let out another peal of laughter as Percy just glanced his way and smiled to annoy the blonde. Natsu fell for the obvious bait as he tried to charge up the stairs, he didn't reach it however as Percy predicted Makarov slammed him down an over-sized fist and flattened the son of Igneel.
"You can't go up the second floor Natsu, not yet." Makarov said.
"Looks like you made him angry" Laxus said trying to goad Natsu even more with his smile.
"That's enough out of you Laxus" Makarov said.
"I'm the strongest in this guild, and I won't lose to anyone." Laxus announced as he started to leave sweeping his eyes on all members of the guild, straying a few moments longer on Percy.
After a minute Makarov addressed Percy with a smile while everyone continued what they were doing and Mira explaining why the second floor is forbidden to the blonde girl.
"How was the job?" Makarov asked.
"It was fine" Percy shrugged "the monster was not a sea serpent though, it was Quanrian, the Ocean Dragon." The result was instantaneous, palpable silence occurred in the guild hall, and a few mugs were dropped. Natsu, Grey, Erza and Lucy were all open-mouthed; Lucy was shaking in fright and Natsu with disbelief.
"What happened?" Makarov asked.
"I beat her, then convinced her to go back to sleep." Percy shrugged, and Natsu snapped back to reality.
"Where is the dragon Percy?" Natsu demanded "Did you ask her about Igneel?"
"The dragon is sleeping now, but it told me that all the surviving dragons are all hibernating world-wide." Percy said. "Quanrian said that all the surviving dragons are afraid of the dragon that's killing other dragons. That they would only rise again if the remaining Dragon Slayers becomes strong enough to defeat Acnologia, the dragon of the apocalypse."