I didn't reeeally bother to make a nice, detailed introduction in the 5D's world, but I did bother to make it reasonable timeline-wise.

I don't own either series, not Dog Days, nor Yugioh 5D's.

So, with all that done, without further ado...


After the destined signers defeated the dark signers, peace returned to Neo-Domino City. About a month later, an unexpected thing happened.

"Where are you going, Yusei?" A familiar voice to Yusei said, as he was preparing his D-wheel to go out. It turned out to be Crow, who was going down the stairs leading to the garage from the rooms. "The usual stuff?" He asked. "Yea. You're not the only one who works in delivery, huh." Yusei answered. Actually, he was bringing parts to the garage for the team's experiments, while Crow was indeed working in delivery.

Just as Yusei was about to go, when he raised the door to the garage, he saw three other similar faces. "Ah, Yusei. Good morning." Aki, Rua and Ruka were on their way to Duel Academy, and they stopped by Yusei's garage. "Good morning. Aren't you a bit early for school?" Yusei asked after he returned the greeting. "I am, they aren't. I just walk with them to school, they go to their class, and I study in the library before my class starts." Aki answered.

Yusei was riding on his D-wheel for his 'delivery purposes'. And then, it happened. Yusei took just a small jump over an obstacle, to find a strange dog at the other side, with a dagger in its mouth.

When Yusei thought that it will just move, or stay in its place despite the roaring sound of the D-wheel's engine, what the dog did was pointing the dagger at the ground, a mysterious purple spell circle appearing as a result. "Wha-?!" Yusei barely managed to say something, let alone avoiding the magic circle before he hit it, the spell circle swallowing him and his D-wheel as if he didn't even hit the ground.

The mark of the dragon head began glowing, as if it was struggling against something. Yusei groaned, as he too, despite his firm grip on the D-wheel's controls, struggled to avoid floating in the air.

He then noticed that despite he was technically falling, he was being protected by some kind of protective bubble, and it was aiming him so he was not falling freely in the air. When the ground was within reach, the bubble descended more slowly, to make the D-wheel land on the ground with a soft hit. It still hit the ground with a bit of force though.

When the D-wheel touched the ground, the bubble dissimilated, as if it never existed. When Yusei opened his eyes after the momentary blink from the hit, he found himself in an entire new world...

The first thing Yusei saw in that other world, was a pink-haired girl standing before him, looking a bit happy to see him... ... or a bit relieved to see him, one or the other. From another glance at the mysterious girl, Yusei noticed that she had ears of a cat or a dog, and and a tail. He then removed his helmet to take a good look at the girl, further confirming what he saw to be truth, rather than something caught on his vizor.

"Nice to meet you." The girl suddenly said, after a bit of silence between the two. Yusei, who was a bit confused at the time, just returned the greeting. "You must be the hero who answered our summoning." The young girl continued. "Hero...?" Yusei responded, with a tone that rather demanded an explanation. "I have summoned you, hero. I am the feudal lord of this Filianno territory of the Republic of Biscotti. I am Millhiore Filianno Biscotti." She next introduced herself to the 'hero' she purposedly summoned. "My name is Fudo Yusei." Yusei responded by introducing himself to the so called 'feudal lord', as she herself said.

"So you are the hero Fudo Yusei-sama... I know a little about you." The girl responded, making Yusei to raise a brow. 'How could she possibly know me if we are from different worlds and I only just came here...?' He thought to himself, before noticing that behind the pink-haired 'feudal lord', was the same dog from earlier, which created the spell circle. "For you, hero, thank you very much for answering the summon and coming to Flonyard." The Biscottian 'princess' thanked Yusei in a formal way, straight afterwards coming towards him and his D-wheel. "After hearing our story, will you lend us your power?" She said. "Well, I'd like to hear the story..." Yusei answered, unsure what to do in that kind of situation.

The 'princess' agreed to tell him the story, but as soon as she finished that sentence, fireworks could be seen. Apparently, that made the 'princess' a little in a hurry. "Oh no, it's already begun!" She said. "What begun...?" Yusei still kept his cool though, most of it due to the fact that he didn't know anything about what was going on in that other world. "We, Biscotti, are at war with a neighboring country at the moment. We can't allow to waste any more time!" Yusei didn't know anything until the 'princess' said those words, right after running towards the floating stairs connecting the island Yusei landed on to the ground. Yusei put back his helmet, and rode on his D-wheel, going down the stairs exactly the speed of the 'princess', not to lose control over the D-wheel, the mark of the dragon head glowing all the while.

When they reached the ground level, another surprise awaited Yusei. A white bird-like animal with a pink tail and rather big blue eyes waited for the 'princess' at the bottom of the stairs. "A bird...?" Yusei wondered, accidentally talking his thoughts aloud. "Have you never seen a Cellkull in your life...?" The 'princess' said in response, rather used to that kind of birds, which Yusei indeed haven't seen anything like that until that moment. "My world doesn't have any..." Yusei responded, a bit sweating, since his world really didn't have any of those 'Cellkulls', and the 'princess' Millhiore was talking with him like Cellkulls were the most common things in the world. "This is my Cellkull, Halla." Millhiore 'introduced' Yusei to the bird-like creature. Yusei nodded, instead of telling Millhiore about the D-wheel, because they were short on time, and it was war-related.

"Biscotti and our neighbor Galette would have wars from time to time, but recently, we've been continuously defeated. Many fortresses and battlefields have been broken through, and with today's battle they're at a rate where they could make our castle fall." Millhiore explained the current situation of Biscotti to Yusei. From his side, he just didn't understand why they were having those wars. "We have no one who is on par with Leonmichelle-sama, who is Galette's leader, so we would like you to lend us your power." Millhiore stated the reason Yusei was summoned. In response, despite being calm, he only asked one thing. "I'm not a warrior, and all I have with me is my cards, which are pure solid vision. Is there anything I can really do in this fight...?" He asked. "You're being too modest! I know your power can help us!" Was the response from Millhiore.

Then, when they got closer to the actual battlefield, Yusei found the shocking truth about Flonyard. "We are having an exciting battle as usual today! Sports casting will be provided by me, Franboise Charles from the Galette Republic from the Territory of the Lions. Commentary will be by General Bernald, and Princess LeonMichelle's aide, Violle-san." Some kind of announcer, named Franboise Charles said, like some kind of an exciting event, rather than a bloody war which raised from hatred or conflict between two nations.

In addition to what Yusei heard over in the announcement, he could see with his own two eyes how the 'war' that Milhiore talked about all the time since he landed, really looked. Lines of soldiers from Galette and some soldiers from Biscotti were fighting each other with none other than actual duel monsters floating above them, fighting each other too. Each soldier wore what could be qualified as a monster slot in a duel disk, but only one slot, and each soldier, as Yusei could guess, only had one monster, at least the regular soldiers. Some of the defending monsters he saw were Science Soldier, Little Trooper, Apprentice Knight, Queen's Double, M-warrior # 1 and 2, and a few others, all the monsters being at about 800 ATK or 800 DEF. In second sight, both sides' monsters were like that, except a few which were special, like D.D. Assailant, which had 1700 ATK and 1600 DEF, and was holding the defensive line.

"The commander, Leonmichelle, hasn't gone to the battle yet, but she comments she'll immediately destroy every famous Biscotti warrior that might appear." The announcer commented. "Leonmichelle..." Yusei thought aloud. "How exactly is a war... done in this world? Are there duels in this world...?" Yusei asked a rather legitimate question, as he didn't know the rules of that world. "Regular warriors fight in the way you see, monster versus monster. If two nobles or elite warriors face each other, they can have a duel with each other, but they can do the monster versus monster too, with the addition of magic cards and life points." Millhiore explained to Yusei, who apparently understood. "Will you lend us your power for now...?" Millhiore asked again. "Alright. I will be your hero, but I will have a talk with Leonmichelle, to see why they are attacking you to that point. There's got to be a reason why they pushed you that far." Yusei responded.

"Thank you very much!" Millhiore got a little excited, as her face got a little bit brighter than earlier. "Say... that machine of yours can fly? I think I've seen it flying sometime..." Millhiore then got a little bit information about Yusei out of her mouth, which made Yusei raise a brow again, wondering exactly how much information did she have about him. "If I concentrate well enough, the crimson dragon will give this machine the power to fly. Why do you ask?" Yusei asked the princess back. "Halla can fly very well, and you can fly with that machine too, so let's hurry back to the castle! From there, you'll be able to get into the battle." Millhiore said, Halla opening its wings. Honestly, Yusei thought that it was strange that a country would like to do so many wars with a country which seemed so friendly as Biscotti; It was or Biscotti was too weak to keep up, or Galette was a cruel country which took over whole countries by force. Either way, something had to be done.

"Breaking news everyone! Princess Millhiore has used a hero summoning for this decisive battle! This is amazing! Now, what is the hero of the Biscotti like?" The announcer said a bit after Millhiore and him took off, Yusei tried his best to ignore him. It made his wondering worse though, as to 'Exactly how much information could this world get in an instant?' .

Once arriving at the castle, he was offered to choose a card from a whole briefcase of cards, a whole army of maids offering him all kinds of cards which they thought would fit him. When they finally listened to him, he told them that he had a whole deck and a duel disk was attached to his D-wheel, causing a little moment of embarrassment, but at least he was good to go to the battle between Biscotti and Galette, but not before a little lecture from the princess of Biscotti about how battle actually works in Flonyard.

"People of Biscotti, people of the Territory Knight of Lions of Galette, thank you for waiting. While our Biscotti have been having continuous defeats as of late, today will be the last day of that disappointing outcome, since a wonderful hero who brings hope and victory to the Biscotti has arrived!" Millhiore said over the microphone, apparently the whole battlefield hearing her somehow, including Yusei, who was kind of irritated at those words, but he could still stand it, with the excuse of 'it comes from Millhiore, a princess in need.' , but still, he didn't understand why would a princess in need say such words with such enthusiasm, and with everyone hearing. He ended up shrugging it off for the time being.

"Magnificently and vividly, please have him appear at the battle field!" Millhiore said as her last words for then. The camera then zoomed on the opening door of the castle of Filianno, as a red D-wheel came out of it, as if fireworks were present with his appearance. The red D-wheel, the Yusei-go, landed near the entrance, its wheels frictioning with the ground until it came to a stop. "Answering the summon from the princess, Hero Fudo Yusei arrived here!" As much as Yusei was irritated by the princess' words of praise about him, he wouldn't just feel right if that world wouldn't know of his existance and possibly give him the respect he needed. And so, the battle for the Filianno Castle began...


Note: There are, as of now, 3 written duels in this fanfic, the fourth being written right as I edit this first chapter. This first chapter isn't but a mere introduction, so be sure to continue reading~