For anyone already read chapter 19 before it was changed, I just fixed the duel a little, Ryuji didn't set Polymerization, only Appropriate. That's a little mistake from me, sorry about that.
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3rd POV:
"That was intense." Nistro comment quietly. This is the first time he sees Ryuji struggle that much. "Look like the way to counter an Underworld duelist is to become one yourself huh?"
"She was able to stop almost every play of Ryuji, but that also make her fall into a disadvantage. Ryuji now have 2 negate, Evo-Singularity can instantly make a second Evolzar so that could potentially 3-4 negate total." Dextra calmly analysis the duel situation.
After hearing the two discuss, Tori eagerly asked. "That mean big brother will win right?"
Both Dextra and Nistro smile and answer in union. "No doubt about it."
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"Haha. Look like I have a little disadvantage in round 1. Then, round 2 start now! My turn, draw!"
Before Riko can do anything, Ryuji activate his set card. "I activate Evo-Singularity; I Xyz Summon 1 Evolzar monster and attach Evoltile Megachirella and Evolsaur Lios in my graveyard as it Xyz material."
"I chain to it with D.D Crow, I can banish this card, then banish 1 card in your graveyard, I banish Evolsaur Lios." Riko response calmly.
"Even after 1 monster Evo-Singularity target get banished it will still let Xyz Summon a Evolzar monster from my Extra Deck, then I can attach the remaining monster to the monster as Xyz material. I Xyz Summon Evolzar Dolkka in attack position."
[Evolzar Dolkka, atk: 2300]
"Eh? So, it's only banished the material instead of making the trap card fail? Well, whatever as long as I can prevent you from summon Evolzar Laggia." Riko shrug her shoulder helplessly, turn out the trap don't work like how she thinks it will.
"Look like you only fear Spell and Trap negate after all. But I think Evolzar Lars alone is enough to deal with you." Ryuji said with confidence in his monster.
"Then I will let you witness the power of my monster. Behold! This is one of my strongest monsters!" Riko said dramatic as she raises a card on her hand.
The audience held their breath as they wonder what kind of monster Riko gonna summon.
Ryuji look at Riko with a confident look, no matter the monster she was gonna summon he still confident in defeat it with his Evolzar. 'What could she even-'
"I tribute both of your Evolzar to Special Summon this ultimate monster to your field! Come here Lava Golem!" Riko shout loudly as she summon her 'ace' monster.
'She summon what!?' Ryuji look in disbelief as both of his monster get devour by a huge amount of lava. Soon he find himself get trapped in an iron cage hold by a lava monster.
[Lava Golem, def: 2500]
The corner of everyone mouth include Ryuji start to twitch violently, he feels extremely painful right now. 'Why even after I transmigrate into another world you still haunted me? That's 3 negates total you damn monster!'
Only now did he finally remember the way to bought smile to other when play Yu-Gi-Oh. 'Tch! More reason to turn into an Underworld duelist; the world shall know pain!'
"I can Special Summon this monster by tribute 2 monster on my opponent field by sacrifice my Normal Summon.
Now that both of your annoying monster are gone, I flip my trap card Call of the Archfiend! I can target 1 Level 5 or higher Fiend monster in my GY; discard 1 Fiend monster, and Special Summon the targeted monster. I discard Archfiend Heiress on my hand.
Archfiend Heiress effect: If this card is sent to the GY by card effect, or by being destroyed by battle: You can add 1 "Archfiend" card from your Deck to your hand, except "Archfiend Heiress". I add Archfiend Commander to my hand. Then Call of the Archfiend effect resolved, I Special Summon Archfiend Giant from my graveyard."
[Archfiend Giant, atk: 2400]
"Now Card of Safe Return effect will activate, I draw 3 cards from my deck!" Just as Riko about to draw, Ryuji also flip his trap card.
"I chain to your Card of Safe Return with my continuous trap card Appropriate! From now on, each time you draw a card outside of either Draw Phase, I can immediately draw 2 cards. Since you get to draw thank to Card of Safe Return, I also get to draw 2 cards." Ryuji said as he refills his empty hand.
Riko: "Don't forget Deck Devastation Virus effect. You must show all card you draw to me, every monster with 1500 or less ATK are destroy!"
Ryuji look at his newly draw cards and show it to Riko unbothered.
Foolish Burial
Magical Stone Excavation
"You got unlucky, I didn't draw any monster so your Virus effect fail." Ryuji said lightly.
"Doesn't matter, I just want to see what you draw anyway." Riko look at her newly draw card with a smile. 'Look like I got lucky this time.'
"I activate Spider Web (Anime card); I can select 1 card in your Graveyard that was sent there the previous turn and add it to my hand. I take Double Summon from your graveyard and activate it.
I tribute Archfiend Giant to Summon Archfiend Commander from my hand. Next is Archfiend Commander effect; When this card is Tribute Summoned: I can target 1 Level 6 "Archfiend" monster in my Graveyard; Special Summon that target in face-up Defense Position. Return Archfiend Giant!"
[Archfiend Commander, atk: 2500]
[Archfiend Giant, def: 1600]
The moment Archfiend Giant appear on Riko field, the continuous spell card on her Spell/Trap Zone light up. "Since Archfiend Giant get Special Summon from the graveyard, Card of Safe Return effect activate; I draw 3 more cards."
Ryuji quickly follow up. "Since you draw a card outside Draw Phase, Appropriate effect let me draw 2 cards." Before Riko need to remind him, Ryuji already show the cards he draws.
Xyz Treasure
Sangan
"Sangan only have 1000 atk so it's destroyed. But Sangan effect let me add 1 monster with 1500 or lower when it was sent to the graveyard. I add Inzektor Dragonfly, because it's added to hand, not draw so Inzektor Dragonfly didn't get destroy by Deck Devastation Virus effect."
Riko frown a little, she immediately thinks of one card Ryuji just draw. 'Foolish Burial' with it he can make full Inzektor combo. 'Why did I feel like my Virus help him more than disrupt him?'
(Modern Yu-Gi-Oh...)
Riko shake her head to calm down. "Next I activate Final Bringer of the End Times; I can destroy 1 monster on my field to destroy 1 card on your field. I destroy my Archfiend Giant to destroy your Lava Golem, then Archfiend Giant effect let me pay 500 LP to protect it from being destroy."
Ryuji look helplessly as the destruction ray erase the last monster on his field.
[Riko, LP: 3400 -> 2900]
"I enter Battle Phase and attack directly with Archfiend Commander!"
The fiend start gathering electric energy around itself and launch towards Ryuji. Ryuji look calmly at the thunder attack and take a card out from his graveyard. "Stegocyber effect; During damage calculation, if my opponent's monster attacks while this card is in my Graveyard: I can pay 1000 LP; Special Summon this card, and I take no battle damage from that battle."
[Stegocyber, def: 2400]
[Ryuji, LP: 4000 -> 3000]
Riko look unsurprisingly when Ryuji easily stop her attack. "Then I overlay both of my monster, Xyz Summon rank 6 Archfiend's Ascent!"
[Archfiend's Ascent, atk: 2500]
"I set 3 cards and end my turn." As the Underworld duelist she is, she won't feel safe without her Spell/Trap Zone fill up with traps.
Outside the field, Nistro try hard to restraint his laugher. "Serve him right, that's his karma for ruining my mood to play Duel Monster all the time."
Even Dextra beside him slightly nod her head, but she feels something bad will happen to them in the future.
"My turn, draw! The card I just draw is Evo-Diversity, it's a spell card so it'll not be destroys. First I normal summon Inzektor Dragonfly in attack position."
[Inzektor Dragonfly, atk: 1000]
Ryuji wait for a few seconds, only after seeing Riko didn't have any intent to activate any of her trap card did he continues. "Next, I activate Foolish Burial to send Inzektor Hornet from my deck to the graveyard. I activate Inzektor Dragonfly effect to equip Inzektor Hornet to it.
Now, I send Inzektor Hornet to the graveyard to destroy your Card of Safe Return!"
Riko: "Nope, not happening! I activate Card of Pandora; When my opponent activates a card or effect that targets exactly 1 card in your Spell & Trap Zone, change the target and I draw 2 cards."
Ryuji: "I chain to it with Appropriate, I also get to draw 2 cards! The two cards I draw are Rescue Rabbit and Xyz Reborn. Since Rescue Rabbit have atk lower than 1500, it is destroyed.
Also, after Inzektor Hornet effect resolved, Inzektor Dragonfly activate it effect to Special Summon Inzektor Centipede from my deck!"
[Inzektor Centipede, atk: 1600]
Before Ryuji can do anything else, Riko interrupt him. "Since it seems like you're trying to destroy my Card of Safe Return at all costs, I may as well squeeze out its last value.
I activate Archfiend's Roar by paying 500 LP; Target 1 "Archfiend" monster in my GY; Special Summon that target, but it cannot be Tributed, also it is destroyed during the End Phase of this turn. I Special Summon Archfiend Heiress in defense position."
[Archfiend Heiress, def: 0]
Now both of them know what to do without explain.
Riko: "Card of Safe Return effect; I draw 3 cards."
Ryuji: "Appropriate effect; I draw 2 cards. I draw Sabersaurus and Solemn Judgment. None of my card are monster with 1500 atk or lower so neither would get destroyed."
Ryuji draw card with great satisfied, if he has to tell the MVP of this duel then it undoubtedly Appropriate. It has already let him draw 8 cards until now. 'It's unexpectedly good in anime world where even an unnamed side character has a feel banned card in their deck. Look like you will never leave my deck then.'
"Ehem! Then if you have nothing else to do, I activate Inzektor Centipede effect; equip Inzektor Hornet from my graveyard to this card. Next, Inzektor Hornet effect; I send this card to the graveyard and destroy Card of Safe Return."
This time Riko didn't have anything else to stop Ryuji. She can only watch helplessly as her Continuous Spell get blow up. 'Now he would get Inzektor Giga-Mantis and equip it to Inzektor Dragonfly to increase its atk. But it atk still lower than my Archfiend's Ascent, he also didn't have any atk increase card in his hand so I safe for now.'
"Inzektor Centipede effect; I add Inzektor Giga-Mantis to my hand. Then I activate Magical Stone Excavation by discard Inzektor Giga-Mantis and Polymerization; I add Double Evolution Pill back to my hand." Contrast to what Riko thinking, Ryuji use Inzektor Giga-Mantis as discard cost instead of using it to increase Inzektor Dragonfly atk.
"Next I activate Double Evolution Pill to banish Kaitoptera and Sangan in my graveyard to Special Summon Super Conductor Tyranno from my deck."
[Super Conductor Tyranno, atk: 3300]
"Kaitoptera effect; If this card is banished: I can Special Summon it, then add 1 "Polymerization" from my GY to my hand."
[Kaitoptera, atk: 1400]
Riko face get more solemn for each action Ryuji make. She can only try to endure this turn. 'Hopefully my Archfiend's Ascent two times protect from destroy is enough.'
"Now, I overlay both Inzektor to Xyz Summon Leviair the Sea Dragon! I activate it effect by detach 1 material from this card; Special Summon 1 banished level 4 or lower monster. Return, Rescue Rabbit!"
[Leviair the Sea Dragon, def: 1600]
[Rescue Rabbit, atk: 300]
Riko was slightly annoyed seeing the rabbit return. "All of your Monster Zone already have monster occur them so you can't activate Rescue Rabbit effect."
Ryuji: "You don't have to point that out, I naturally have a solution to that. I activate Polymerization to fuse Kaitoptera with Sabersaurus on my hand. Fusion Summon Horned Saurus!"
[Horned Saurus, atk: 2000]
"I overlay Horned Saurus with Stegocyber to Xyz Summon Rank 6!"
'Not good! Evolzar Solda won't be destroy by card effects while it has material, it also has atk higher than my monster.' Riko already feel a bit headache, she currently has no card that can deal with destroy resistance and her deck did not have second Lava Golem.
"Come here Dragonlark Pairen!" Unlike what Riko thinking, instead of Evolzar Solda, Ryuji summon a dragon with bird feature.
[Dragonlark Pairen, atk: 2700]
(Solda: Wuwu~ I knew it! You don't need me anymore!)
Outside the field, Nistro and Dextra wear an expression of sudden realize. "Right, this monster basically counter Riko entire strategy."
Tori and Yuma look over with curious. "I have never seen big brother use this monster before, is it strong?"
Nistro smile at the kid. "It's understandable that you two don't know about it, you both only know Ryuji for 3 days after all. You could that it's the strongest monster Ryuji aside from his Evolzar. Before having Solda and Lars, it's his only Rank 6."
Dextra: 'Why did he talk like it's a long time ago? If I remember correctly, Ryuji only have that monster for 3 months.' Dextra shake her head and focus back to the duel.
On the field, Riko was searching her memories to find information of the monster, but nothing come to her mind. 'At least it's not Evolzar Solda, this monster could be deal with easier than Solda, right?'
"Now I have free Monster Zone, I activate Rescue Rabbit effect; I banish this card and Special Summon 2 Sabersaurus from my deck. Them I overlay both monster to Xyz Summon Tornado Dragon!"
[Tornado Dragon, def: 2000]
"Tornado Dragon effect; I can detach 1 material from this card, then target 1 Spell/Trap on the field; destroy it. I destroy Call of the Archfiend!"
Riko: 'Tch! He really leaves me no backup at all.'
"I activate Xyz Treasure; This card let me draw 1 card for each xyz monster on the field, currently there're 4 xyz monster so I can draw 4 cards." Ryuji draw 4 cards from his deck then show them to Riko.
"First card, Carboneddon! Its atk is lower than 1500 so it's destroyed."
"Second card, Mystik Wok! It's a spell card so it's not destroyed."
"Third card, Waboku! It's a trap card so it's not destroy."
"Lastly, Evolsaur Elias! Its atk is lower than 1500 so it's destroy."
"Next, I enter Battle Phase, I use Dragonlark Pairen to attack your Archfiend's Ascent!" Pairen immediately launch itself towards its opponent upon hearing its master order.
"Hmph! As if! I activate Mirror Force; When an opponent's monster declares an attack: Destroy all of opponent's Attack Position monsters. Both Dragonlark Pairen and Super Conductor Tyranno are in attack position so they're both got destroyed!" A rainbow mirror forming before Riko monster shielding it inside.
The moment Pairen make contact with the mirror, its release a powerful lazer beam sweap through Ryuji field. With a *Boom*, the field was cover in smoke.
Just as Riko was pleased with the outcome, the sound of something getting break get into her ears. She looks ahead in confused then disbelief as Dragonlark Pairen breakthrough the trap unharmed.
Seeing her confused, Ryuji explain. "Dragonlark Pairen cannot be destroyed by battle or card effect while a monster, other than "Dragonlark Pairen", is face-up on the field that was Special Summoned from the GY. Your Archfiend Heiress is Special Summon from the graveyard, so my Pairen is immune to Mirror Force effect."
"So that how it's, alright you can continue." Although Riko seem calm when saying but her frustrated tone can't be hide from anyone.
"Then Dragonlark Pairen continue to attack your Archfiend's Ascent!" Pairen after destroying the barrier continue to launch towards the fiend, it raises its claw and swing down pushing the monster back.
"Archfiend's Ascent effect; If "Summoned Skull(s)" I control would be destroyed by battle or card effect, I can detach 1 material from this card instead. This card's name becomes "Summoned Skull" on the field so I can use its own effect to protect itself. But I still take battle damage."
[Riko, LP: 2900 -> 2700]
Ryuji already know Archfiend's Ascent effect doesn't feel bothering for unable to destroy Riko monster. "I set 4 cards and end my turn. Now, the role reverse, try your best to breakthrough my board."
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Guys, did I cook?