"I Tribute Elemental HERO Prisma, whose card name has been changed to Artificial Hero – Sieg, and Special Summon from my hand—Evil Dragon Fafnir!"
A dragon whose very name had become a phenomenon—
the dragon-slaying hero Siegfried, cursed by dragon blood even as he bathed in it.
This evil dragon phenomenon carried the fate that anyone who defeated Fafnir would inevitably become 'Fafnir' themselves.
And when Siegfried returned to the Throne of Heroes,
the heart mutated by dragon blood continued to beat within the chest of the homunculus Sieg.
The dragon slayer shall eventually become the dragon—
a curse that forever follows those who slay dragons.
[Evil Dragon Fafnir – Effect: This card cannot be Normal Summoned.
It can only be Special Summoned by banishing 1 "Heroic Spirit – Siegfried" or "Artificial Hero – Sieg" from your field or GY.]
Slamming his final card onto the Duel Disk, the roar of the evil dragon echoed across the night sky.
Even students who knew nothing—those simply enjoying the romance of the late-night festival—felt a chill of fear run down their spines in that instant.
"…That feeling—Fafnir? Jaden actually played that card!"
Hoshino, who had already sensed something wrong after seeing the ominous lightning over the back mountain, rushed toward the scene.
Midway there, she heard the unmistakable roar of Evil Dragon Fafnir.
If Red-Eyes Archfiend of Lightning was a monster others might use, then Evil Dragon Fafnir—a reward card from the follow-up quest 'Hero Who Looks to the Future' and an added card tied to Sieg—should belong only to Jaden.
"Jaden and Jonouchi together… normally, even a Shadow Rider shouldn't be a threat," Hoshino frowned.
"But why do I feel so uneasy?"
[Evil Dragon Fafnir ★★★★★★★★★★ (Level 10)]
[DARK][Dragon/Effect][ATK 3000 / DEF 2000]
"So cool… is this the legendary evil dragon?"
Jonouchi gazed up at the massive black dragon and sighed.
"I hate to admit it, but yeah—it's definitely more oppressive than Red-Eyes Black Dragon."
Jaden raised his arm and declared:
"Evil Dragon Fafnir's special effect—when this card is Special Summoned: banish all monsters your opponent controls!"
Fafnir's gaze burned with disdain for all existence, as if it could incinerate everything before it.
"We won't let you!"
The younger Spirit flung a card from her hand. A jade-green spear descended from the heavens, cleaving the battlefield apart.
"I activate Artifact Lancea from my hand!"
[Artifact Lancea – Effect: During your opponent's turn, you can Tribute this card from your hand or field; for the rest of this turn, neither player can banish cards.]
The lance split the battlefield, allowing the two Buster Bladers to withstand the annihilating pressure of the evil dragon.
Younger Spirit:
"Because of Artifact Lancea, Evil Dragon Fafnir's banishing effect cannot be activated this turn!"
Older Spirit:
"And since the number of Dragon-Type monsters on the field has increased, Buster Blader's ATK rises!"
[Buster Blader ATK 4100 → 4600]
"That's impressive—you two!" Jaden praised sincerely.
"Hmph. Flattery won't make us happy, Jaden~"
"But that's fine—because I wasn't planning to use Fafnir's effect this turn anyway!"
Jaden clenched his fist and moved straight into the Battle Phase.
"Because this turn, I'm winning this Duel!
Battle—Evil Dragon Fafnir, attack!"
The sisters looked stunned.
"A 3000 ATK dragon can only defeat Buster Blader, the Destruction Swordmaster at best.
If this is your final struggle, that's pretty disappointing, Jaden."
"You never know," Jaden shot back.
"A Duel isn't decided until the very last moment!"
Borrowing Jonouchi's words, Jaden pointed straight at the 4600 ATK Buster Blader on the opposing field.
"So this turn, Evil Dragon Fafnir attacks Buster Blader!"
"?!!"
The sisters stared in disbelief.
This suicidal move made absolutely no sense to them.
A flash of dragon-slaying steel—
Buster Blader's counterattack, surpassing even the attack power of Blue-Eyes Ultimate Dragon, effortlessly obliterated Evil Dragon Fafnir.
[Evil Dragon Fafnir → Destroyed]
[Jonouchi & Jaden LP 3400 → 1800]
The sisters mocked them:
"Is this the result of giving up?
If you've lost the will to fight, we suggest you just surrender."
"Winning with a Fusion Monster… that's my style," Jaden said calmly.
"Watch closely—the final equation that leads to victory—"
Sending the battle-destroyed Fafnir to the Graveyard, Jaden looked toward Jonouchi.
"At this moment, I activate Evil Dragon Fafnir's effect in the Graveyard!
Come forth—the strongest evil dragon that dances beneath the crescent moon!"
"Just as I thought—we'd need this card to win in the end!"
Jonouchi drew a card from the Extra Deck.
Even after Fafnir's destruction, the pressure it left behind only intensified.
[Evil Dragon Fafnir – Effect (③): If this card is destroyed by battle or card effect:
Special Summon 1 "Crimson Demon Dragon – Siegfried Alter" from your Extra Deck, ignoring its Summoning conditions.]
Pointing at the sisters' Non-Fusion Area, Jaden declared:
"Even if you seal Fusion Summoning, you can't stop a Special Summon from the Extra Deck that ignores summoning conditions!"
"Crimson Demon Dragon – Siegfried Alter?!"
Staggered by the overwhelming fighting spirit of Jaden and Jonouchi, the fairy sisters forced themselves to stand firm.
"As long as it's a Dragon, it can't defeat Buster Blader—the ultimate anti-Dragon monster!"
Jaden:
"Want to compare dragon-slaying?
Even if the dragon slayer becomes a dragon, the justice carved into his soul never changes!"
Jonouchi:
"Across generations—old and new Duelists' fighting spirits intertwine and become the ultimate monster!"
Jaden & Jonouchi:
"Now—use a darkness deeper than a Shadow Game itself to carve open the path to victory!
Special Summon—Crimson Demon Dragon – Siegfried Alter!"
[Crimson Demon Dragon – Siegfried Alter★★★★★★★★★★ (Level 10)][DARK][Dragon/Fusion/Effect][ATK 3000/DEF 3000]
"I am the strongest evil dragon who soars beneath the crescent moonlit sky—I have nothing to apologize for!"
Within the surge of dark light, Siegfried's dragon wings awakened and were dyed pitch black, the power of the evil dragon coiling tightly around his body.
"To think I would be summoned in this manner… then let me, after so long, answer your fighting spirit with my strongest form!"
Soaring through the night sky, Siegfried raised his greatsword high, the density of mana around him growing heavier with every passing second.
Legend speaks of this cursed holy sword that once accomplished the feat of dragon slaying—
a blade that also carries the nature of the original demonic sword, Gram.
Depending on its wielder, it may become either a holy sword or a demonic one.
"Didn't you just say it was impossible to defeat Buster Blader?" Jaden shot back.
"Then let's face it head-on—with this dragon-slaying power!"
Raising his Duel Disk and revealing the cards, Jonouchi explained:
"Buster Blader's effect increases its ATK by 500 for each Dragon-Type monster on your opponent's field and in their Graveyard.
But Crimson Demon Dragon – Siegfried Alter's effect increases its ATK by 500 for each Dragon-Type monster on both fields and in both Graveyards!"
[Crimson Demon Dragon – Siegfried Alter ATK 3000 → 7000]
[Buster Blader ATK 4600 → 5100]
The sisters gasped in shock.
"Seven thousand ATK?! That's impossible…!"
"The situation's completely turned around now!" Jonouchi shouted.
"One strike to the soul—attack, Siegfried Alter!"
Because it was Special Summoned during the Battle Phase, Jaden was able to immediately launch this decisive, dragon-slaying counterattack.
"Dragon slaying is nothing more than the flick of my hand!
Split the world where light and shadow intertwine—
holy dragon, evil dragon, fall together!"
The blade carved a deadly arc across the night sky, colliding violently with the dragon-destroying greatsword wielded by Buster Blader.
The overwhelming ATK difference decided the outcome in an instant.
[Buster Blader → Destroyed]
[Twin Sisters LP 7200 → 5300]
"It's not over yet…! Even if Buster Blader is defeated, as long as the Duel isn't finished, we still have a chance!"
"There is no chance left," Jonouchi declared firmly.
"This Duel ends this turn!"
Continuing the assault, Jonouchi announced:
"Siegfried Alter's effect! If it destroys a Dragon-Type monster by battle, it can attack once again!"
"…Destroys a Dragon-Type monster by battle…?"
The Twin Sisters froze in horror as a dreadful realization struck them.
"Take a good look at your back row," Jaden said, pointing straight ahead.
[DNA Surgery – Continuous Trap Effect: Declare 1 monster type. While this card remains on the field, all face-up monsters become that declared type.]
[Buster Blader (Warrior-Type → Dragon-Type)]
"Because DNA Surgery is active, Buster Blader has been changed into a Dragon-Type monster!" Jaden continued.
"Which means that since Siegfried Alter destroyed a Dragon-Type monster, it gets to attack again!"
"You used our own Continuous Trap to give Siegfried Alter additional consecutive attacks…?!"
The sisters stared at Jonouchi in disbelief.
That very DNA Surgery had been activated last turn to allow Buster Blader to destroy Jonouchi's Red-Eyes.
(Jonouchi: 'You never know—until the very last moment, a Duel's outcome isn't decided.')
"Don't tell me… you'd already calculated all of this back then, Jo—Jonouchi?!"
"Of course I did!" Jonouchi boasted loudly.
"No matter what happens in a Duel, everything's already been calculated by yours truly—Jonouchi, professional Duelist!"
Of course, the truth was that he hadn't planned that far at all—it was sheer luck that his opponents had activated DNA Surgery.
But moments like these—moments of miraculous comebacks—demand confidence and bravado!
Pitch-black sword light crossed the battlefield.
In a single instant, Buster Blader, the Destruction Swordmaster was cleaved apart—body and blade alike—by Siegfried's strike.
"That makes the second one!"
With a cold, steady tone, Siegfried spread his twin demonic dragon wings wide and rose high above the battlefield.
[Twin Sisters LP 5300 → 900]
Driven into a corner, their Life Points rapidly draining under the pressure of the Shadow Game, the sisters felt true fear for the first time in centuries.
"Impossible… we're losing?
We're Spirits—and we're being defeated in a Duel by mere humans?!"
They had always believed their dueling abilities far surpassed those of ordinary humans.
Treating Jonouchi and Jaden as nothing more than appetizers before hunting Hoshino, they never imagined such a crushing defeat.
"Mere humans?" Jonouchi shouted, pointing toward Siegfried Alter as it gathered power for the final strike.
"I may not have the power of gods,
nor the dueling abilities of Spirits,
nor Hoshino's awakened bloodline…
But even so—
even as a mere human,
even as nothing more than an ordinary man—
I, Jonouchi, am a proud Duelist!"
"Mr. Jonouchi!" Jaden exclaimed, his hands trembling with emotion.
Jonouchi & Jaden:
"Go, Siegfried Alter! This is my—no, our—'mere humans'' final blow!"
"Not bad at all… that's some real master-level spirit!"
Channeling every last ounce of evil dragon mana, the blade Gram extended into a jet-black beam that seemed ready to tear the night sky apart.
"Then let this strike bring us victory!
Split light and shadow—the world where good and evil intertwine—
advance toward the ultimate super-finisher—Balmung!"
The final 7000 ATK direct attack crashed down between the fairy sisters.
[Twin Sisters LP 900 → 0]
"AAAAAAAH—!!"
As their screams echoed and the dark space shattered, the unseen Shadow Game quietly came to an end beneath the silent night sky.
Though perhaps it wasn't entirely unseen—
for the final strike pierced the heavens and was witnessed by students all across the academy.
[Duel End]
[Winners: Jonouchi & Jaden]