Hey, guys! This is my third crossover story of my new World Chronicles franchise: Grand World Adventures!

It is a crossover of One Piece, Black Clover, Attack on Titan and Kuroko's Basketball (after Kuroko's World Adventure). Like Holy World Adventures, it is also inspired by fellow FanFiction authors XFangHeartX, Autistic-Grizzly, AnimeFan299110, Iron117Prime and Yellowpikmin88! Like the seven Cosmic Gems and the Elemental Stones, the key element in for the story will be the seven "Magic Orbs" with each orb bearing the main aspects of the very magic itself, as heroes hailing from their four home universes will fight alongside allies from of a different Planet Earth and the other four worlds to face tons of enemies old and new, including a third dark god seeking total cosmic annihilation. Hope you enjoy!

One Piece belongs to writer Eiichiro Oda and Weekley Shonen Jump and the anime is produced by Toei Animation and licensed by Funimation

Black Clover belongs to writer Yūki Tabata and Weekly Shonen Jump, and the anime is produced by Pierrot and licensed by Funimation

Attack on Titan belongs to writer Hajime Isayama and Bessatsu Shōnen Magazine and the anime is produced by Wit Studio (from S1-S3) and licensed by Funimation

Kuroko's Basketball belongs to writer Tadatoshi Fujimaki and Weekly Shonen Jump, and the anime is produced by Production I.G and licensed by Bang Zoom! Entertainment


Grand World Chronicles

Prologue

Thousand Sunny, New World

"Straw Hat" Monkey D. Luffy, captain of the infamous Straw Hat Pirates with a bounty of 500,000,000 Beli, is sitting at his usual spot on the figurehead of the ship/home of the Thousand Sunny, grinning like always without a care in the world. The skies are beautiful at night with the air calm and little activity in the seas.

"It's getting late, Luffy. Might wanna catch some sleep." A voice explained.

Luffy turned to see the cook of the Straw Hats and "self-proclaimed ladies' man" Vinsmoke Sanji, having just cleaned up the kitchen.

"Nah. I love nights like these." Luffy said.

Sanji sighed, knowing he's not going to win with his captain.

"Fine. Just don't keep Nami-swan waiting." Sanji said.

"She's out like a log. Wanted to give her some sleep since she just pulled an all-nighter on that map she did from that cool island we visited." Luffy explained.

Sanji chuckled. "It was last week. But Nami-swan's diligent as she is beautiful!" Sanji hollered, doing his "love hurricane".

Luffy wasn't impressed, but didn't bother to argue with Sanji being his usual self. Sanji soon reverted to his normal self.

"Just get some sleep when you're ready, captain." Sanji said, before making his leave.

Luffy smiled and looked back up to the sky, staring at the moon.

Suddenly, a white flash from the moon became intensely bright and large bright and wide, Luffy quickly shielded his eyes from what may be harmful.

XXX

Abandoned Building (Under Construction)

Luffy woke up real slowly and in a lethargic mood after being put to sleep unexpectedly, starting to regain consciousness in just a few seconds.

"Either I had the strangest dream or I'm…" Luffy's trail of thought stopped when he quickly assessed the current situation in front of him: he is no longer on the Thousand Sunny and out at sea, but somewhere unfamiliar to him.

He is right now standing in what appears to be the inside of a building that looks like under construction with the floors, ceiling and walls covered in bricks, thick cement and layers of other materials that have been holding it all together. There are also two floors so far, seemingly appears to be a two-floor building.

Luffy regained his footing now that he's fully awake and needed to figure out what's going on.

"Whoa…" Luffy said.

"I'm glad to see I'm not alone." A voice commented, as Luffy turned to his right and began to grin widely.

The voice came from not a person, but Luffy's loyal white wolfdog partner and Guard Dog of the Straw Hat Pirates, Blizzard.

"Blizzard!" Luffy cheered, petting his pet with affection.

"I was worried being the only one here." Blizzard said.

"Same here. And I have no idea where the heck we are?" Luffy questioned.

"Where you two are doesn't matter." A voice said, in a threatening tone that alerted the two Straw Hats.

Luffy and Blizzard looked up to the open second floor where metal poles are connected nicely for the floor to be built next. Standing on those poles were none other than the Six Powers assassin of CP0 Rob Lucci, and the New Fishman Pirates captain Hordy Jones (in his overdosed state) to their shock.

"No way! Lucci and Hordy?!" Blizzard exclaimed.

"What the heck are you guys doing here?" Luffy asked, taking a fighting stance knowing these aren't the kinda enemies to mess around with.

"We're not here to answer your question, Straw Hat." Lucci replied.

"We're here to kill you!" Hordy hollered, charging first.

Luffy used Observation Haki to dodge Hordy as did Blizzard, which made him a target to Lucci (who used Shave to get behind Blizzard). Blizzard quickly noticed thanks to his own Observation Haki and dodged a high-speed Finger Pistol in an attempted assassination maneuver.

"Too slow!" Blizzard hollered, before charging at the CP0 assassin.

"Gum-Gum Pistol!" Luffy shouted, firing his rubber fist forward at Hordy, who blocked with one of his enlarged arms before attempting to stab the stretched fist with his trident. Luffy was quick and retracted the fist back to him before the spear made his mark.

Luffy charged forward and unleashed a Gum-Gum Stamp squared at Hordy's face, but the fishman barely flinched and attempted to grab Luffy's leg, but Luffy drew closer by pulling himself like a speeding bullet while twisting his arm hard.

"Gum-Gum Rifle!" Luffy shouted, using increased velocity to punch Hordy hard, releasing himself in time.

Hordy held his face with his right palm before removing his hand slowly, showing an irritated expression.

"Human scum!" Hordy growled, which Luffy snickered as he was getting started.

XXX

Clashing on the second floor with the flooring luckily stable, Blizzard dodged a Tempest Kick from Lucci and started to strike without hesitation.

"Twister Fang!" Blizzard shouted, spinning wildly towards Lucci.

"Too slow, White Wolf! Iron Body: Empty Tree!" Lucci shouted, augmenting his muscles that blocked Blizzard's blow, but the purpose of this move isn't for defense but easily countered and damaged the Guard Dog instead.

Blizzard managed to recover easily once he landed on his four feet. "I almost forgot this guy is a master of the Six Powers! Luffy had a hard time fighting against him back at Water 7, so I need to be more careful." He thought to himself.

"You're tough to withstand that. Guess I need to go all-out." Lucci commented, immediately transforming into his half-leopard form.

"Razor!" Lucci shouted, combining both Moon Walk and Shave to move at an inhuman speed upward, crashing through the ceiling before falling downward at Blizzard, who managed to dodge in the nick of time, but crashed through the floor and leaving a hole.

"That was close! But he could be heading towards Luffy!" Blizzard thought, in concern Lucci may be going after his partner while he was fighting Hordy.

XXX

"Water Shot!" Hordy shouted, shooting droplets of powerful water at Luffy, who managed to dodged some of them, but that moment he got hit by Lucci, who just came crashing down on him.

Coughing blood, Luffy punched Lucci with a left Armament Haki-augmented right hook to shake him off, doing an aerial flip and rejoining Hordy's side. Blizzard quickly came down and rejoined his master.

"You okay, Luffy?" Blizzard asked.

"Yeah. Stupid leopard guy took me by surprise." Luffy responded.

Lucci and Hordy weren't fazed by the injuries inflicted on them as something felt very odd to Blizzard. A hunch that is a dog's number one quality to decide the best course of action.

"Either these two have gotten stronger, or have Luffy and I get weaker." Blizzard thought, trying to surmise the predicament the two Straw Hats are in.

"Say your prayers, Straw Hat!" Hordy and Lucci hollered in unison, preparing to charge together.

Luffy and Blizzard prepared to brace themselves, until a pair of mysterious slashes struck Hordy and Lucci in the back, much to their, and Luffy and Blizzard's, equal surprise.

Lucci was soon met with a large black sword that slammed really hard into his stomach, and send him flying into a wall. Hordy attempted to strike the blade blade wielder, but got met with a pair of blades slashing his fin and back, staggering him before that same black sword slashed Hordy extremely hard, crashing him into a different wall.

Luffy and Blizzard only stood and stare in surprise as two (of three) people appeared out of nowhere and saved their lives. Those two were none other than heroes hailing from other worlds! One is 3rd Class Junior Magic Knight of the Black Bulls squad and user of Anti-Magic Asta, and Scout Regiment member and current vessel of the Attack Titan Eren Jaeger.

"I've never seen these guys before. Who are they?" Blizzard asked.

"You two… were so COOL~!" Luffy shouted, out of excitement with star-shaped eyes.

"Uh, thanks…" Eren said, feeling complimented despite not having do much damage. And he has no idea what is going on at all.

"You guys were so cool too!" Asta hollered, showing the same level of excitement as Luffy.

"Wait a minute - there were 'three' that sent Hordy and Lucci flying. Where's the third?" Blizzard thought, curious as to why there were two that saved him and Luffy.

"Uh, excuse me." A voice said.

The four turned behind them to see none other than the Phantom Sixth Man of the old Generation of Miracles-now Small Guard of the Seirin High basketball team and descendent of a dagger-wielding scout from another world, Tetsuya Kuroko. Luffy, Blizzard, Asta and Eren jumped in fright.

"WHERE THE HECK DID YOU COME?!" Asta and Eren exclaimed in unison.

"I didn't even smell or sense him?!" Blizzard exclaimed.

"Are you a ghost guy?! SO COOL!" Luffy shouted, excited even more.

"I hate to interrupt. But we still have to take these two down before anyone can explain." Kuroko explained, pointing towards Lucci and Hordy who just got back up from the destroyed walls.

"New crewmates, Straw Hat? Pathetic." Hordy said.

"They'll be dead, as well as you and White Wolf." Lucci explained.

"Then bring it on, idiots!" Luffy hollered, adjusting his Straw Hat to be on top of his head.

[Begin Gum-Gum Bazooka One Piece OST]

Blizzard, Asta, Eren and Kuroko nodded as they prepared for battle. Lucci and Hordy charged ferociously.

"Gum-Gum Gatling!" Luffy shouted, launching a barrage of super-fast long punches, with his fists clad in black thanks to his Armament Haki at Lucci and Hordy, both dodged easily.

Hordy was met with Asta, who swung the Demon Slayer Sword at Hordy dead-on. Hordy acted fast and chew on some Energy Steroids to grow bigger and stronger, catching the large sword barehanded to Asta's surprise. But Asta grinned as he moved his head to the side to reveal Luffy punch Hordy extremely hard with a Haki fist that made the fishman release the sword, allowing Asta to strike Hordy again like a bat hitting a baseball that the latter withstood thanks to the Energy Steroids. Luffy joined the assault by striking hard with the same fist. Lucci attempted to assist, but Blizzard blocked his path.

"Finger Pistol: Yellow Lotus!" Lucci shouted, rapidly striking with one finger claw. Blizzard swiftly dodged as Eren attempted to strike from behind with his omni-directional maneuverability blades, but Lucci activated Iron Body to defend himself, breaking the swords in the process. However, Kuroko appeared out of nowhere thanks to his lack of presence and misdirection to the left, kicking both broken blades that managed to reached Blizzard's teeth and augmented them with Armament Haki, allowing the wolfdog to slash through Lucci's Iron Body and injured him.

"Moon Walk!" Lucci shouted, quickly retreating to the second floor. Eren, having just re-equipped himself with new blades used his ODM Gear to reach upward to catch up. Kuroko and Blizzard followed in suit and were able to catch Lucci from behind. Lucci was too late to use Shave or Razor as Eren first used his ODM Gear to grapple towards the wall on the timing Lucci just made it to the second floor and struck him with his blades, followed by Kuroko to the right, and lastly Blizzard who was over Lucci and slammed him down hard with Steel Claw.

Back on the first floor, Luffy quickly dodged another Water Shot barrage from Hordy, while Asta drew the Demon Dweller Sword from his grimore and unleashed a barrage of dual-wielding slashes that injured Hordy. Asta quickly backed off as Hordy attempted to attack Asta with his trident, but Luffy was quick and kicked Hordy in the face to make him back up, just in time for the falling Lucci crash right into him; Blizzard, Eren and Kuroko quickly reunited with Luffy and Asta. With just a few combos, these five warriors have the uncanny ability to work together in a myriad of ways despite having met for the first time. Their sudden growth in teamwork made them fight like they've fought together in the same realm for years.

"Time we send these clowns flying together," Luffy said, which Blizzard, Asta, Eren and Kuroko smiled in agreement just as Lucci and Hordy struggled to get back on their feet.

"Gum-Gum Bazooka!" Luffy shouted, dragging his arms backward before thrusting them forward, with his hands clad in black thanks to his Armament Haki once again.

"Bullet Fang!" Blizzard shouted, shooting forward like a supersonic bullet.

"Demon Slayer Sword!" Asta shouted, attacking strong with two hands on the Demon Slayer Sword, having put away the Demon Dweller Sword.

"Titan Slayer!" Eren shouted, moving forward to perform a flurry of high-speed slashes with his blades.

"Vanishing Cross!" Kuroko shouted, using his Vanishing Drive and slashing his daggers in an "X"-shaped formation.

The five combined their attacks as it all flew straight towards Lucci and Hordy, failing to have time to react or dodge, shocked as they were hit dead on out of the building and flown straight into the air, the extreme force created by the resulting explosion and sent them to an unknown lake.

[Gum-Gum Bazooka One Piece OST ends]

XXX

Luffy, Asta, Eren and Kuroko gave a hi-five, congratulating on their victory, while Blizzard howled.

"Now that was COOL!" Luffy shouted, superbly excited at seeing new people and their powers like he usually does.

"You guys were amazing too!" Asta hollered, putting his swords away and hands over his head.

"Thank you." Kuroko said.

"But what are we gonna do now?" Eren asked, which leaves the four teens and Blizzard to think very hard with their current situation. But sirens were suddenly heard from outside.

"I think… that's the police coming." Kuroko said, with a straight face. This caused Blizzard, Asta and Eren to freak out.

"AW CRAP!" Asta and Eren exclaimed in unison, freaking out.

"What do we do?!" Blizzard exclaimed.

The only one to not freak out, Luffy suddenly came with a brilliant idea; an imaginary lightbulb came at the top of his head.

"I've got an escape idea!" Luffy hollered, which got Asta, Eren and Kuroko surprised.

But Blizzard had a sudden dread in his mind. "Oh no…"

XXX

Four minutes later…

Blizzard twitched his right eyebrow in shock.

"I CAN BELIEVE YOU CAME UP WITH THIS!" Blizzard angrily (but comically) asked, freaking out as he, Asta, Eren and Kuroko were in front of Luffy, who stretched his arms towards the edge of the warehouse rooftop they were just on. It was all part of a quick-escape plan Luffy came up with.

"Here goes, Gum-Gummm…" Luffy started, getting ready to launch with his signature grin showing.

"I'm not liking where this is going!" Asta hollered, freaking out once again.

"How are we sure this is even safe?!" Eren asked, in comical anger.

"This is a terrible idea." Kuroko said, with no expression change with just how he normally looks.

"One of these days, Luffy… I'm gonna murder you…" Blizzard said, darkly.

"… ROCKET!" Luffy shouted, slinging himself and the others to the sky very hard, considering the angle to launch from upward instead of straight.

Luffy laughed without a care and with his toothy smile. Blizzard, Asta and Eren screamed loudly out of total fright, while Kuroko didn't seem fazed. They were flying straight non-stop since leaving the building full-speed, until they were losing speed and altitude, falling downwards straight to the grassy backyard of a triplex house, causing Luffy, Blizzard, Asta and Eren to scream as they crashed down. The crash was big enough to catch the attention of a young teenage boy with short, dark blond hair, blond eyes, and wearing pajamas, having been awoken from the sudden crash and ran from his room straight to the backyard (from the back of his house) to find the source of the sound, now intrigued in the four unconscious teens and wolfdog.

It begins the start of a brand new journey!


Preview Skit:

Luffy: I can smell adventure all ready!

Blizzard: With you there, Luffy.

Asta: I can't wait myself!

Eren: Guess I can lend a hand in this.

Kuroko: This feels like going to that other world.

Luffy grinned.

Luffy: Next time: Chapter 1 - Assembly of Comrades!

Luffy, Blizzard, Asta, Eren & Kuroko: See you next time!


An great way to show such a new upcoming story alongside Holy and Super World Chronicles! As before, I don't own any of four respective series, and they belong to their respective authors (including the FanFiction versions).

Also to ensure there is no confusion on how each of the series are currently running based on HUGE character development: One Piece takes place after the Dressrosa Arc (XFangHeartX's version; all the Straw Hats are together instead of being separate), Black Clover takes place after Asta's trial in the Elf Reincarnation Arc, Attack on Titan takes place after the Uprising Arc before the Return to Shiganshina Arc, and Kuroko's Basketball takes place roughly a month after Kuroko's World Adventure.

Right now, I'm only posting the prologue and holding off until I do the revised chapters for Holy and Super World Chronicles (from Holy and Super World Adventures) then post the first chapter once everything else is taken care of.