This fanfiction was written before episode 114 of Cardfight Vanguard. There is no set timeline. Any events that happen in episode 114 onwards that might affect this fanfiction will be considered non-canon unless stated otherwise. Several Japanese words and practices (last name, first name) will be retained to keep things in the context of Japanese culture.

Cover image taken from a gif from tumblr. Will add specific blog soon.

Generation Gaps
A Cardfight Vanguard & Yu-Gi-Oh crossover

The recently formed Cardfight Vanguard club gets a new adviser who's transferred from the middle school department. Regal, charismatic and daring, he's not quite what the club expected and they're in for more surprises about the deck he holds. What's this Duel Monster card game that died fifteen years ago?

I: A New Club Adviser

Every night, Aichi always shuffled through his deck to unwind from the schoolwork. Often he dreamed about speaking to his cards, getting visions of battles from Cray and receiving prophetic messages about tactics and card combinations, inspiring him the next day. Tonight's dream hadn't seemed to be so different at first except that it was more vivid than usual. The sense of realness was surreal that Aichi thought his soul had left his body and went on to a different plane of reality.

He had been "talking" to Gancelot when the solitary liberator's attention was taken away by some sort of disturbance. Barcgal started growling, Maron's head jerked out of his book and Blaster Blade positioned his hand to the butt of his sword.

"What's wrong?" Aichi asked anxiously. He didn't see anything wrong and the sky looked perfectly blue. On his right, Alfred, king of the United Sanctuary, had stepped out with his loyal steed, looking livid.

None of the spirits ever talked - with a voice and lips moving – but they projected their thoughts through images and feelings. In this sense, Aichi could "hear" what they were talking about.

"You dare defile this holy land, magician?"

A black curtain appeared out of thin air and unveiled a man an armored man with a purple garb. He had a tall, coiling pointy hat-helmet attached with a double-layered shoulder pad. His arms, legs and feet were protected with sleek metal coverings with white spiral designs from his knees downward; only face and hands exposed to show human flesh. He wielded an emerald staff almost as tall as he was, a yellow orb seated at the mouth on top.

The magician didn't speak like the others, which made Aichi think he was perhaps from another land. That made Aichi anxious. Was another war going to happen in Cray?

Alfred's horse stomped on the ground. "I have no desire to hear from a trespasser!"

Aichi looked between Alfred and the magician. What did the magician say? Aichi didn't "hear" anything.

"I listen to the demands of no other king but myself. Leave before you tempt me to unsheathe my sword."

Aichi didn't like this development. Despite the threat, the magician had the audacity to smile almost as if he was amused by the idea of clashing with the knights.

"W-wait!" Aichi burst out when Alfred and the other knights were about to move in from the taunt. "Blaster Blade, what's going on? Do you really have to fight?"

Everyone in Cray was Aichi's friends but he would admit that they were looking quite intimidating right now. Blaster Blade was the only one he could really turn to without fear.

But before Blaster Blade could answer Aichi, the magician had taken a look at him and must have said something else because the knights appeared more aggravated. Blaster Blade had stepped in front of Aichi and taken out his sword.

"He is an honored friend from Earth," Blaster Blade said. "Your master is not. Come close to him and I will burn you with my light."

The magician swung his staff and Alfred charged at once. The curtain appeared again out of thin air and was the only thing that got sliced in half when Alfred ran his sword through where the magician was once was. The magician was gone.

Aichi wanted to know what just happened. It was the only way he could think of some way to be of help. But he could already hear a voice calling him back from Earth, waking him up from his sleep. His vision dimmed as his eyelids fluttered to the morning light.

Aichi groggily sat up. Still fresh from the dream, he was quick to be alarmed by the difference in today's morning greeting.

"You're finally awake!" his mother exclaimed, putting her hands on her waist. "You need to start waking up on your own. I'm not going to be always around, you know."

"Where's Emi?" Aichi asked. Ever since he was in middle school, it was Emi who woke him up.

"She's staying home," his mother answered, picking up a stray necktie on the floor.

"Why?" Aichi asked, pulling himself out of the bed. "Is she sick?"

"She might as well be," his mother said, sighing. "Since you're always Cardfighting, you hardly pay attention to your sister."

"W-what?" Aichi scattered to the floor. "Mom, what happened to Emi?" Aichi asked again, completely concerned. Had he really been such a bad brother to Emi? Because of Cardfight Vanguard?

"I'm just kidding," she said with a laugh. Aichi smiled a little but the joke left a foreboding note at the back of his head. "She's just tired from crying all night."

"What?" Aichi exclaimed, heart dropping. "Mom, I thought you were kidding!"

She looked at him questioningly. "I am. Wait, Aichi –"

"Emi, Emi!" Aichi sped through the hallway, running to his sister's room. He hastily knocked, calling at his sister from behind the door. "Emi, what's wrong? Are you all right? Did something happen at school?"

The door slowly opened with Emi rubbing morning stars out of her eyes. "Aichi, why are you being so loud?"

"Emi, I heard from Mom," Aichi said, bending down and reaching for her shoulders. He paused, trying to form his words as calm and polite as he could. "Um…I didn't actually hear everything but she said you were crying all night and I didn't even hear it. I'm so sorry. I didn't even know. Is there anything I could do about it? I-I don't really know what I can do if it's something like a bully from school but…umm…I will do my best."

"Whaaat?" Emi glanced at his mother who was trying not to laugh. "Geez, Aichi, relax. Mom didn't tell you that I cried over a movie. It was ten so you were fast asleep by then."

"Oh…that's good?" Aichi breathed a sigh of relief then pouted at his mom. "Mom, why didn't you tell me? And why did you let Emi watched a movie so late?"

Emi rubbed the back of her neck, looking away. "Um…"

"What's wrong?" Aichi asked, looking at his sister and wondering about her behavior.

"I kind of do have a 'problem' in school but not like what you think!" Emi finished quickly as Aichi's mouth gaped open. "I was a little sad so I wanted to watch something to take my mind off…"

Aichi looked over at his mom then back at Emi. "Do you mind telling me what it was?" he asked gently.

"It's nothing, really." At this, Emi had blushed slightly. "You should get going to school. You're going to be late again."

"Ahh…" Aichi stood up, conceding to Emi as she closed the door. How could it be nothing when Emi had been clearly affected by it?

"Her favorite sensei isn't teaching in the middle school anymore," his mother said, walking downstairs. "He intentionally left so Emi's pretty upset that he would transfer elsewhere. I think he transferred to the high school department."

"Oh?" Aichi looked at Emi's door sadly. "I've never seen Emi get attached to a teacher. Hasn't it been only a few weeks though?" Aichi followed after his mother to the dining room.

"Emi really admired him," her mother said, taking a seat. "A lot of her classmates did, in fact so they're all confused why he suddenly left."

Aichi nodded, taking a piece of toasted bread. He supposed admiring a teacher wasn't that different from a special friend. If he had a friend who suddenly left, knowing he would be missed, Aichi would be upset too.

"Hurry up, Aichi!" Naoki shouted from the doorway as the other students flood out of the classroom.

"Coming!" Aichi said, rushing to put his items in his bag.

"You don't have to rush him," Kourin said, still seated down on her hair while Aichi was busy. "It's not like we're going to be late."

"What did you say?" Naoki asked, marching back in. "That attitude's not gonna be helpful to the club!" We need to make use of all the time we have to train and prepare for the bigger fights in the future." He bent down forward to jab his finger close to Kourin's chest.

"Naoki-kun's right," Aichi said, putting his arms through the straps. "We don't want to keep the others waiting."

Kourin gaped at Naoki, momentarily stunned by his rudeness. She would have said something hadn't it been for Aichi's agreement. She settled to glaring at Naoki and walking pass him with her chin high. Naoki grinned.

The three of them left for their clubroom where they found Misaki and Komoi reading a pocketbook and a Cardfight Vanguard magazine respectively in silence. They stowed them away when Aichi and the others arrived, exchanging greetings with each other.

"Where's Nakamurabashi-sensei?" Aichi asked, putting her bag under the lab desk.

Misaki shrugged but said nothing to elaborate. Komoi pushed his glasses up his nose bridge out of habit and was the one to answer. "I was the first to come here and I didn't see him or his belongings around. I assume he will be here shortly afterward."

Aichi sat down, nodding. "I see. We should wait then."

"Why don't we kill some time and play?" Naoki suggested, grinning in his usual enthusiasm for the game.

"Wouldn't that be rude?" Aichi asked.

"It's what the club is about," Kourin said. "I think it's better than doing nothing."

"Agreed," Misaki concurred, nodding subtly.

Naoki threw a fist in the air. "Yosh, AICHI!"

Aichi responded with a start. "Y-yes, Naoki-kun?" He still wasn't that used to Naoki's outbursts. He didn't know whether the big grin in his face was a good thing or a bad thing.

"I think it's about time we have a re-match. No, I don't think the first fight we had could even be called a match. We need to have a real fight! Captain versus vice-captain!" He slammed the side of his fist on the desk. "We need to show to our members how strong we are to inspire them!"

Aichi, Misaki and Kourin couldn't help but smile. Choosing Naoki as a vice-captain was a consensus and in hindsight, it had taken them quite a while to realize how fitting he was for the job. Aichi had no experience being a leader (Misaki wishes to disagree though) but he knew being able to unite everyone as a team was a quality of one. Though Naoki lost against Kourin during their deciding match, skill was not the only thing a fighter should show. Naoki had the burning passion and unabashed love for the game. Naoki could be a little too enthusiastic and he had some English that needed fixing (when they told him the real meaning of "Break Time," he thought it was even more fitting to use it) but that was part of why it's so fun to have him around.

Komoi sighed loudly. Sensing Komoi had something to say, Naoki immediately threw him a dirty look.

"I suppose it would be entertaining to watch Sendou-san beat you in three turns."

Naoki smirked. "Don't worry, megane, knowing Aichi, losing to him is understandable but you bet I can beat you in three turns."

"Hmph." Komoi pushed his glasses up. "I suppose jokes are fine every now and then."

A few minutes more of squabbling later, Aichi and Naoki finally had their match started. It was already twenty past three and both fighters had taken four damages each. Misaki volunteered to drop by the faculty and check if Mr. Nakamurabashi would be coming. When she returned, Aichi had dealt Naoki a finishing blow with three criticals on King of Knights, Alfred.

"Welcome back, Misaki-san!" Aichi greeted as the match was over. "How did it go?"

Misaki shook her head. "They said Nakamurabashi-sensei already went home."

"What?" Naoki who was frowning over the match and Komoi who was being smug about the outcome, cried out at the same time.

Kourin crossed her arms. "I can't believe he just left us."

"Maybe he forgot?" Aichi said.

"That's even worse," Kourin pointed out, frowning.

"Who cares?" Naoki prompted cheerfully. "Doesn't stop us from playing. Megane, fight Kourin!"

Komoi glared at Naoki. "I don't really mind but who appointed you to decide match-ups?"

"No one." Naoki crossed his arms smugly. "Just me, the vice-captain."

Aichi wanted to raise his hand but had stopped himself before embarrassing himself. "Um…"

"Yeah?" Misaki encouraged, putting her hand on her hip. Aichi smiled at her appreciatively.

"I think we should discuss the battle first." He looked down at their cards from the previous match. "I remember when Team Q4 lost during the nationals we went to a special training camp going over battles and strategies with another team. I found it extremely useful so I thought we should do the same."

Naoki straightened. "Go to a camping trip?"

"Huh? No, just discussing the battle we had so that – "

"A camping trip sounds awesome!" Naoki exclaimed.

"That's not what Aichi meant," Misaki said, looking at Naoki critically.

"Y-yeah, I know!" Naoki said, raising his arms to his chest in surrender. He didn't want to get on Misaki's bad side. "But we could use one too! Playing is fun and all but we need to have a different setting and mood. We can't be coped up in this room all school year."

Kourin rested her cheek at her palm. "We need the permission of the school to set any club activities outside school time and grounds."

"And Nakamurabashi-sensei isn't around to help us set up one," Komoi added.

"Argh!" Naoki scratched his hair furiously. "Now I'm pissed off at him."

"We'll talk about it tomorrow when he's around!" Aichi placated. "Let's talk about something else in the meantime."

"But what if he doesn't come again?" Misaki asked.

"I'm sure he'll come," Aichi reasoned, "…eventually."

"He better," Kourin said, leaning backward. "We can't just think of playing all day during club hours. We have to talk about plans of increasing our members and getting a better room and fighting equipment, like what Hitsue High School have."

At this, everyone's head lowered in thought. Hitsue had their very own Motion Figure System and they didn't have a pesky student council trying to stop their club from flourishing. Getting the club to be official was such an achievement to them but it turns out, they have a long way to go.

"Couldn't you…" Naoki gestured in the air to Kourin. "Provide us with that cool hologram stuff? You are an idol and all."

"Sure," Kourin said amicably. "But we'd still need a bigger place and somehow, I don't think we can have the council approve of the gloves easily."

"No, wait, Kourin-san, you don't have to pay for the club!" Aichi said. "We can't rely on you. Everyone in the club has to contribute for it."

"I don't really care but we all have our own contributions. I can provide the club the Motion Figure System and the rest of you can contribute for the other things we need," Kourin said.

"We would need starter decks," Komoi said, his chin cupped by his hand. "If we are to entice new members, we have to provide them with starter decks. We can't just loan our decks to them."

"I can…probably supply starter decks," Misaki said, rubbing her arm. "But it's not going to be free. We still have to earn a living, after all…"

"Of course," Aichi said, smiling. "We'll collect money from the club members every month so we could buy decks."

Misaki beamed. "I'll ask Shin if he could give us a special discount, so don't worry about expenses."

"Sounds like plans are on the way!" Naoki stood up and snatched a chalk on the board. He wrote down "camping trip," "new clubroom," "cool equipment," "starter decks," and "getting new members." At the bottom, he also added "Nakamurabashi-sensei."

"Naoki-kun!" Aichi chided.

"We have to do something about him!" Naoki said. "He can't just go home and leave us here to ourselves."

At that moment, the door slid open. Naoki dropped the chalk in fright and rubbed his sleeves hastily on Nakamurabashi-sensei's name on the board. Everyone in the room was silent.

"Nakamurabashi-sensei!" Naoki exclaimed in false delight, sweat dripping down the side of his face. "We weren't just talking about…" Naoki stared at the person at the door and like the rest, he fell silent.

It wasn't Nakamurabashi-sensei at all.

"It doesn't look like you guys got the memo." He was amused. Something about his smile had reminded Aichi of that magician in his dream. "I had to drop by the student council's office so I was a little late. Nakamurabashi-sensei isn't going to come here anymore. I'm your new club adviser."

His jacket was unbuttoned and his pants looked more skin-tight than what the other teachers wore. He wore a unisex leather boots with a flat two-inch-heel and he had a chain belt loosely hanging on his side. The most striking feature that silenced the entire club was his punkish spiky-black hair, dyed with red highlights, and gold-blonde locks above purple eyes.

"My name is Motou Yugi." Yugi placed his weight on one leg and clipped his left hand on the pocket of his pants. "Just call me Yugi. Nice to meet you, Cardfighters."