System Down, similar to the Magic Card "Last Day of Witch" that Youyu once used, is a powerful magic specifically targeting certain races.
This is a deadly blow to any Machine-Type Deck. Just this one card can cripple the entire system of a Machine-Type Deck, wiping out all resources managed in the opponent's field and graveyard during the duel.
In the original timeline, Yuki Judai obviously wouldn't put such weird stuff in his Deck, thanks to the education he received from his teacher since childhood.
"..."
"Duels sometimes are about intelligence warfare," Youyu instructed young Judai, "By understanding the opponent's background, knowing the make-up and patterns of their Deck, you can select the most precise card from the vast Deck to conduct targeted combat.
Many powerful Decks have weaknesses, and spotting the opponent's weaknesses will help you win more easily."
Actually, this is a dilemma that many generations of main characters in Yu-Gi-Oh face—they often know nothing about the villain's Decks they encounter for the first time, but the villains know the main characters' Decks and ace monsters thoroughly.
This disadvantage often makes battles, which the protagonists could have easily resolved, become very difficult.
"Judai, you might be too young to understand now, but you must remember one thing." Youyu said to young Judai sincerely, "Although duels are often joyful, they are not always so. Sometimes duels can be burdened with pain, when you have to win for yourself or for your companions."
Young Judai's innocent eyes were filled with big questions: "Can dueling be painful?"
"Yes. A hero does not just have a cool side; there is also... never mind, it's too early to talk about this now." Youyu ruffled his little head, "Think about it, if you know the opponent's Deck structure, clearly have targeted cards that can win easily, but you don't use them in the duel, isn't that letting it slide?"
"Uh... I guess so?"
"That's right, letting it slide in a duel is taboo, not only irresponsible to the Duelist themselves but also disrespectful to the opponent," Youyu said seriously.
The history and original story of GX will certainly vary greatly, and Youyu is not sure if Judai will be pit by teammates like in the original work. A good sunny boy, hard to survive in solitude...
Therefore, no matter what, he hopes Judai can be always prepared.
"Oh, I think I get it." Judai acknowledged, though still somewhat confused, yet remembered everything that Youyu said.
...
A System Down card, and the majestic Cyber End Dragon is shut down directly. Even the three Cyber Dragons in Marufuji Ryo's graveyard did not escape, all were affected by System Down and exiled from the game.
Ryo's Set Card "Fusion Dispel" was of no significance—since even if he uses it to break the Cyber End Dragon's fusion, the three Cyber Dragons restored to the field would still be exiled under the power of "System Down."
Asuka was shocked: "Are you kidding? Just one card wiped out all of Ryo's Cyber Dragons..."
Marufuji Shou was too stunned to speak.
But Marufuji Ryo quickly adjusted from his surprise. Far from being disgruntled, he nodded slightly: "One card has determined the course of victory, impressive as expected, you really are terrifyingly strong."
This made Judai embarrassedly scratch his head: "Oh, it's nothing..."
Then the duel continues. Here Judai acknowledges courtesy and performs a strategic move for Marufuji Ryo, with a masterful hand and fusion of the hardworking couple, once again summoning his cherished Flame Wingman, without much chatter, directly striking the opponent's face.
Fortunately, Marufuji Ryo kept that "Fusion Dispel" card. Here he timely activated Fusion Dispel, dissolving Flame Wingman's fusion. He summoned the Fusion Material "Wingman" and "Burstinatrix" back to Judai's field in defense position, thereby enduring the attack this turn.
Judai couldn't launch more attacks as he had no monsters, so he set two cards face-down to end the turn.
Marufuji Ryo took a deep breath.
He had only one card left in his hand.
This draw was crucial.
But he remained calm. Even in this absolutely unfavorable situation, his confidence remained unshaken.
This was the confidence gained from his years of daily training in Cyber Style.
As long as he believes in his Deck, the Deck will definitely respond—
——Draw!
YaDaZe (success)!
Marufuji Ryo drew the Quick-Play Magic "Cyberload Fusion!"
Cyberload Fusion allows fusion of Fusion Material Monsters found in the banished zone back into the Deck, for a Fusion Summon of a Fusion Monster using "Cyber Dragon" as Fusion Material.
A Magic Card that can fuse Cyber Dragons in the banished zone!
All three Cyber Dragons in his Deck were exiled from the game, and at this critical moment, in a card-drawing event that determined winning and losing, he accurately drew from the remaining thirty-four cards in the Deck this card that performs a fusion in the banished zone, accuracy almost like a present print.
Is this a coincidence?
Of course, it's not a coincidence! It's a testament of strength, inevitable for a true Duelist!
So here Marufuji Ryo was naturally ready to activate directly...
"Flip Cover Card!" One of Judai's set cards in the backfield flipped instantly during the drawing stage, "Counter Trap Drastic Drop Off!
When a card is added to the opponent's hand from the Deck, the card added to the hand is discarded!"
What!?
Marufuji Ryo's whole body trembled in shock.
Astonished, he looked at Judai.
He actually... even calculated blocking the opponent's only chance of turning the tables?
Upon understanding this, Marufuji Ryo seemed to suddenly realize something.
Believing in the opponent's strength, trusting that the opponent can certainly draw a reversal card in adversity, predicting and blocking this possibility... isn't this a display of respect for the opponent?
Respect for the opponent was the most important thing Ryo's mentor Samejima taught him, and also Ryo's consistent dueling style.
And at this moment, watching Judai's duel, feeling this pressure from having all his actions predicted by the opponent, having all paths blocked by the opponent, Ryo couldn't help but truly feel—
——I am far behind him!
Ryo closed his eyes, with a calm smile, discarded the "Cyberload Fusion" he hoped to reverse to the graveyard, did nothing, and ended the turn.
The field and graveyard were empty, and there were no usable cards in hand, so the result was naturally undisputed.
Judai changed the hard-working couple to attack position, Wingman and Burstinatrix attacked separately causing 2200 damage. Then he activated the Quick-Play Magic "Instant Fusion," letting the two hard-working creatures fuse during the Battle Phase, once again fusing into his beloved Flame Wingman.
Judai waved his hand: "Flame Wingman, direct attack!"
Elemental Hero Flame Wingman flew high into the sky, transformed into a blazing cannonball and dove!
Burst✰Kill!
Marufuji Ryo closed his eyes, content and accepted the blow.
[Marufuji Ryo, LP 0]