Here is a crossover.

I will try to update this story each week.

Reviews are liked so please do so!

Any suggestions would be awesome because honestly, I'm not an expert on Yu-Gi-Oh! Zexal.

I had to look up background information and watch multiple episodes in different order to

Disclaimer-I own neither 5D's or Zexal.

It was a sunny day in Heartland City. Traffic was booming which caused trouble for a set of twins.

"Slow down Leo!" A fourteen-year-old green haired girl called out to her brother. She was wearing the Heartland Academy's girl uniform, but had on a red long sleeve shirt underneath it. "I can't keep up!"

The boy named Leo couldn't hear her, since he was too far ahead of her.

The girl stopped in the middle of the road and groaned out loud. "Where am I supposed to go now?!"

The siblings moved to the city the day before, having no idea where anything was.

Leo had told his sister he found the way to their new school that morning.

That didn't turn out well for the girl as she was now wandering aimlessly down the streets.

The wandering didn't last long since a strangely shaped maroon motorcycle pulled up beside her.

"Hello?" The girl shyly asked, not sure to run or stay.

The person riding pulled off his helmet revealing his dark blue eyes and purple hair with a light blue looking crown on in front of his forehead.

"What's your name?" he asked the girl.

She took a step away from him. "Shouldn't you say your name first?" she retorted.

The boy smirked. "Smart girl. My name is Reginald, but only my sister calls me that."

"Then what should I call you?"

"Shark."

The girl smiled as the boy named Shark offered his hand, to which the girl shook. "Nice to meet you Shark. I'm Luna." After saying that she let go of his hand.

"So where exactly are you going?" Shark asked.

"Heartland Academy." Luna answered. "My twin brother, Leo, was riding on his duel-board to school with me following. He was going too fast causing me to lose him."

"Lucky you, I'm heading there now." Shark tossed her his helmet, to which Luna barely caught. "Hop on; I'll drive you there."

Luna reluctantly put on the offered helmet and got on the motorcycle, holding onto Shark for dear life. "You sure you know how to drive this thing?"

Shark looked over his shoulder at the frightened girl and his smirk grew wider. "I wouldn't be driving if I didn't."

Before she could ask any more questions, he immediately accelerated the vehicle and drove down the streets quickly as Luna screamed in fear for a moment.

"Have you never ridden on one before?" Shark shouted over the howling wind.

"Yes, a lot actually, when I was eleven!" She answered as she loosened her grip on him. "But the people I rode with went faster than this."

"Then why did you scream?" He questioned her. "Shouldn't you be used to this speed."

"Like I said it was when I was eleven." Luna repeated herself. "I'm fourteen now! And when they do drive they don't immediately speed!"

Shark laughed as he slowed down to the speed limit. "How do you like your first day in Heartland City so far?"

Luna laid her head on his back, closed her eyes, and smiled. "I love it."

Unknowingly to her, he smiled as well, something he hardly does.

About ten minutes later the duo made it to their school.

As the two got off the vehicle, the tardy bell rang. "Race you to the class room!" Luna exclaimed as she ran to the doors.

"You don't even know where it's at!" Shark yelled as he caught up with her.

She smirked at him. "You don't know that!"

So with that, the two raced against each other, not knowing they were being watched.

On a roof near the school 5 Barians spied on the two joyful students.

"Nash is an idiot!" Alito exclaimed. "Doesn't he know who that girl is?"

"I would be surprised if he did." Mizar said. "Her kind usually hide their marks so it's trickier for their enemies to find them."

"Why can't we go ahead and duel her?" Girag questioned. "It's not like a magical force is going to stop us."

"Apparently you have no clue about the Crimson Dragon." Dumon commented. "The Crimson Dragon usually steps in to help her kind win a duel. That's the only way they can win."

"Just wait and see." Vector stated. "That girl isn't going to last long."

"Why?" Girag asked.

Vector smiled sinisterly. "Nash is going to be the reason she's going to die."

"Looks like Shark's late again," Mr. Kay muttered to himself with a boy standing next to him.

This boy had green hair, which was in a pony-tail, and grey-gold eyes. He was wearing the boy's school uniform with a blue long sleeve shirt underneath.

Before Mr. Kay could introduce the boy, two laughing and panting students entered the room. "You're late, Shark."

"It's my fault sir," Luna stepped in. "I was lost because Leo, my brother, was going too fast for me to keep up."

She looked right at the boy, Leo, whom was smiling innocently. "Sorry?"

Luna rolled her eyes.

She walked down the aisle while Shark went to his empty seat.

As she did, the students stared at her in amazement and jealousy.

"All right class!" Mr. Kay started out as Luna took the spot beside her brother. "We have two new students who are also twins. So any questions?"

A girl with grey hair and cat ears raised her hand. "Yes Cathy, you may ask your question."

Cathy pointed to the twins' undershirt. "Why are you two wearing those shirts?"

"Because we want too," Leo retorted causing Cathy to glare at him.

A boy with short blue hair raised his hand. "Caswell," Mr. Kay called.

Caswell stood. "Miss, we know your brother's name, but what's yours?"

"Her name's Luna," Leo answered for her.

Caswell sat back down as Luna elbowed her twin.

Then a girl with short blue hair stood. "Leo are you dat-"

"Yes!" Leo interrupted her. "I'm already dating someone who is far more beautiful than any girl in this room, excluding my sister."

The girl grumbled to herself as she sat back down. Most of the girls in the room seemed disappointed.

"Nice," Luna complemented him, whispering. "I'll make sure to tell Patty what you said."

Leo tried to keep himself from smiling at the mention of his girlfriend.

Then a short boy wearing a top hat stood with a mischievous smile on his face. "My name is Flip. How good of a duelist are you two?"

"Good enough to beat you in 5 minutes," Leo retorted.

Flip also glared at before sitting down.

Then a chubby male stood exposing the bottom of his stomach. "Bronk. So Luna-"

"No, she doesn't have a boyfriend." Leo answered before Bronk finished asking the question. "The only way she can have one is if I and half of our other friends approve of him."

Most of the boys groaned including Bronk when he sat down.

A girl with dark green hair stood next. "I'm Tori. Luna, why does your brother answer all your questions and how can he answer ones that aren't finished being asked?"

Luna glanced at her brother, whom slightly nodded his head; giving her permission to tell his secret.

She was not going to betray him like that.

"Our friend, who is like an older sister to us, taught Leo how to read people as a farewell present." Luna lied. "As for him answering my questions, he's not my twin for nothing."

Tori sat back in her seat beside a sleeping boy with black hair and red highlights.

"One more question then we'll start today's lesson." Mr. Kay said. He then called on Shark.

Shark reluctantly stood. "As you already know my name is Shark." A smirk appeared on his face. "So Luna, do you want to hang out during lunch? And Leo, it will be me and my. . . friends eating on the roof so we aren't going to be alone. But you are welcome to join if you want."

Everyone in the room gasped, well, except for the sleeping boy. That was the first time Shark was nice to anyone, except his sister of course.

"Sure," the twins agreed.

"Alright then Luna you can sit with Shark since you two are already friends and Leo you can sit by Bronk for the time being."

Luna happily took her seat next to the boy while Leo reluctantly sat by the slightly taller and bigger male.

"Now today's lesson will be ove-"

A large snoring interrupted Mr. Kay from finishing.

"Yuma!"

The boy, whose name was most likely Yuma, jumped awake. Most of the students laughed at his embarrassment. "Sorry, Mr. Kay." He apologized.

"Since you insist on sleeping in class, then you must know what the Arcadia Movement is." Mr. Kay challenged.

Luna looked over to Leo.

From his seat, Leo had his hand clenched into fists and his breathing was slowly becoming uneven.

"It is an organization of Psychic Duelists." Yuma answered. "The founder and former leader of the organization wanted to find as many Psychic duelist as he can so he could use them as soldiers for war to overthrow Goodwin,

"That is-"

"I'm not finished." Yuma interrupted his teacher. "Within the Arcadia Movement there was one female duelist that was far stronger than anyone else, including the leader. But the duelist couldn't control her powers well."

"Her name?"

"Akiza Inzinski." The twins flinched at the sound of their elder friend's name. "She's a beautiful duelist who used to be called the Black Rose because of her dragon which is named Black Rose Dragon. Anyways the Black Rose is also a-"

"Shut up."

Everyone turned to who said it, which happened to be Leo.

"Oh no," Luna whispered.

"What's wrong?" Shark asked the girl sitting next to him, his voice low.

"Leo's having a panic attack." She answered.

"That is not appropriate young man," Mr. Kay scolded Leo. "Anyways what Yuma said was surprisingly correct. Here is the picture of the leader."

Up on the picture, a man with brown hair covering his eye appeared on the screen.

Below the picture was his name.

"Turn it off." Leo growled.

The attention was again diverted to him.

He was clutching his head, breathing hard. Soon he began coughing, which sounded like choking.

Luna ran to her brother, kneeling by his side. "Leo, calm down. Remember he's dead!" She turn her head to look at Mr. Kay. "Turn it off! Can't you see it's hurting him?!"

"How is it hurting him?" Bronk asked incredulously. "It's just a picture."

"A picture of the man who abused Leo and almost killed him!" Luna retaliated. "Please, Mr. Kay, turn it off!"

The teacher, somewhat confused, turned off the projector.

Leo's coughing stopped, but he was still breathing hard. "I'm fine." he whispered to his sister.

Cautiously, she gently touched his right arm, causing both of their arms to burn slightly.

Though his arm burned, Leo looked and felt better than he did before.

"Thanks, Luna." He thanked her quietly.

She smiled at her brother. "That's what these marks are meant for. To help other Signers."

Sadly she didn't know that she could die for being one.

Cliffhanger!

So I hoped you guys enjoyed or liked it.

Later in the story some stuff will be kind of confusing, so I will try to explain the best as I can when I write it.

I explained it to my friend, who had no clue about the anime, but she was able to understand it after a few moments of explaining.

Anyways, till next time!

Please review!