A/N: I'm back, baby! New fanfic, inspired by Yubel, Judai and Haou. This story will follow Rua as he goes through something similar to what Judai went through in the time he became the Supreme King. Now I bothered you enough with my talking, enjoy the story:

In an army facility called 'Dark Lightning', far away from the Public Security Bureau, a general gathered four men in white military uniforms. Two of those men stood behind the general; those two were his guards, and the other two men were soldiers who failed a mission.

The guards of the general looked at the soldiers who failed their mission. Anyone that was part of this military operation, and would fail a mission, wouldn't have a good death. His guards looked like ordinary soldiers with white military camouflage, except for the hair and the tattoos on their right hand surface.

One of them was black haired with a few strays white hair, black eyes, 'V. Mercer' was written on his name shield. The other one had white hair with a few strays black hair, black eyes, on his name shield was written 'N. Mercer'. The black haired one had a '96' tribal tattoo on his right hand surface while the other one had a '69' tribal tattoo on the same place.

"You idiots!" yelled the general at the two soldiers in front of him. "Are you even aware what you've done?" he asked rhetorically.

"Sir… we didn't know that…" started one of the men in front of him, but he stopped because of the deathly glare the general was sending him.

"Silence!" shouted the general. "You'll pay dearly for this!" he yelled.

"Sir, please…" started the other man in front of the general before falling in a trap door together with the other man.

"Noah, Vortex; go find that damn card, find the person who got it and if it's necessary, kill every fucking living creature that lives in the building the card was lost in!" commanded the general.

"Yes, sir," said the two soldiers in unison.

"And if you fail… you know what awaits you," threatened the general.

"We won't," said Vortex.

"Have we ever failed before?" asked Noah rhetorically before heading out.

* Meanwhile at the Tops *

"Ruka!" called out a cyan haired boy; he was probably about 13 years old.

"What is it, Rua?" asked a very alike looking girl the same age.

"Does this card belong to you?" asked Rua holding a dark fairy card in his hand.

"Never seen," answered Ruka looking closer at it. "Where did you find it?" she asked.

"In front of the door to the balcony," answered Rua still looking at the card.

"Maybe the wind blew it here," guessed Ruka unsure.

"Yeah, probably," replied Rua.

"Not at all," said a demonic male voice.

"What was that?" asked Rua before looking around.

"What do you mean?" asked Ruka confused.

"I think I heard something… never mind," answered Rua, who still was a bit confused.

"Listen exactly to my words and do whatever I say if you don't want that pretty girl to die in front of you!" threatened the demonic voice.

Rua looked around once again but didn't find anyone.

"Don't waste your time trying to find me; I can see you, do whatever I want to the people around you, but you don't even see me. It's a bit ironic, isn't it?" added the demonic voice. "If you want to say something, just think about it," explained the demonic voice.

'Who or what are you?' thought Rua still looking around.

"Rua, are you alright?" asked Ruka a bit concerned.

"Don't you dare tell her about me or she'll die," replied the demonic voice.

"I'll just take a bath," answered Rua.

"Spare me that!" replied the demonic voice.

"I meant… go to my room. Sorry, I'm just a bit tired," said Rua before proceeding as fast as possible to his room.

"Good, now to business," said the demonic voice after Rua closed the door.

'Business… what business?' thought Rua.

"You'll do me a favor by summoning me in a duel," explained the demonic voice.

'What for?' thought Rua confused.

"You'll find out soon enough," answered the demonic voice.

'I don't understand!' thought Rua.

"Then let me put it simple enough for a dickhead like you to understand: You'll do whatever I say or I'll force you to do it. And if you dare tell someone about me or that you found that card… I swear I'll kill any person you know, make you responsible for it, and destroy your life completely!" explained the demonic voice, "Consider yourself as a hostage who'll listen to every command its kidnapper will give," added the demonic voice.

'What do you mean by 'that card'?' thought Rua before taking the card he found earlier out of his pocket.

The card's name was Lucifer, it was a level ten, dark attribute, fairy type, it had unknown attack and defense points.

'Is this you?' thought Rua looking at the card.

"It took you long enough to understand," answered the demonic voice.

'Lucifer… that name sounds somehow familiar,' thought Rua.

"Hello! Prince of Darkness… eternal archenemy of God… Leader of Illuminati… do the bells now ring by you?" shouted Lucifer like it would be obvious, that's when Rua's expression changed to frighten.

'But… I never heard that you're a card,' thought Rua confused.

"OK… how stupid are you…? I'm not a card, damn it! …Never mind," said Lucifer a bit annoyed.

'And the reason why you don't show yourself is?' thought Rua before a somehow transparent tall warrior with black metal wings and red eyes showed up in the room floating. Lucifer had long black hair and medieval warrior clothes.

"Now, happy?" asked Lucifer.

'Would be more if you weren't here,' thought Rua not really surprised by his appearance.

"Now… like I told you, you'll summon me in a duel or the consequences for not obeying me will be big," replied Lucifer.

'Why do I have to do that?' thought Rua.

"Like I told you, you'll find out soon enough," answered Lucifer, "Now… duel with someone and summon me!" he ordered.

'You'll go away then?' thought Rua.

"Maybe…" answered Lucifer before laughing manically, "Maybe not… who knows, maybe you should just try and see what happens," he stated.

'Eh… I don't think so,' thought Rua totally relaxed.

"Why are humans so incompetent? Fine… then I'll just have to take your body over, also it may happen that that girl will get injured while I'm controlling you," declared Lucifer.

'Wait… fine, I'll do it,' stated Rua a bit scared.

"Humans are sometimes really interesting… what stupidity they do for someone else who is far more useless…" declared Lucifer looking deeply in Rua's eyes, almost like looking into his soul.

'What do you mean by that?' thought Rua.

"As I told you about your sister being injured, I saw how you're scared for her… you thought about how, after she fell in a coma, the time your parents left, you were the only one who stuck by her as she fell in her coma which wasn't originally a coma… how you fought the darkness in her place… how you died for her protection and were revived… yes… I know pretty much every little detail you think about," explained Lucifer triumphantly.

'Can we get this over with?' thought Rua.

"Sure," answered Lucifer smirking.

'It doesn't matter with who I duel, right?' thought Rua.

"Right," answered Lucifer.

'I'll duel Yusei then… I've been waiting to duel him a long time anyway,' thought Rua.

"Fine, it's not like it would matter anyway," replied Lucifer, "But… I should let you know that you won't be able to use your Deformer deck as long as I'm around," he added.

'Why not?' thought Rua.

"That is an interesting, great and unimaginable story with strange twists and turns… you would just get bored," stated Lucifer before chuckling a bit, "Now go to that… Yusei or whatever that guy was called and duel him before I take your body over and do it myself," he added.

After a bit more arguing, Rua decided to head over to the shack together with Ruka.

Ruka went to talk about something with Aki while Rua went to Yusei.

"Hey Yusei… you're not busy, are you?" asked Rua standing in front of Yusei.

"Not that much, why?" asked Yusei.

"Well… it's been a while since we dueled," answered Rua which made Yusei smile a bit.

"Sure, but, I won't go easy on you," replied Yusei.

"Is he bragging? Oh-ho, he is so dead!" exclaimed Lucifer floating over Rua.

"But I don't think your D-Board would keep up with my D-Wheel… so it better not be a riding duel," explained Yusei.

"No problem," replied Rua.

Rua and Yusei got their duel disks attached to their arms and after getting out of the shack, they were ready to start the duel.

"DUEL!" exclaimed both of them.

"I'll go first, draw!" declared Rua before drawing a card from his deck.

Yusei VS Rua

4000 | 4000

5/6 | 6/6

35/40 | 34/40

As Rua looked at the cards on his hand, he remembered Lucifer saying that he won't be able to use his Deformer deck, 'But… I don't know any strategy for this deck,' thought Rua. But unknown to him Lucifer was behind his back, his eyes glowing in a crimson red color influencing Rua's decision.

"This is the Hopeless Dragon deck, why don't you let me handle it?" suggested Lucifer.

'Fine,' thought Rua without hesitation.

Rua's eyes flashed just for a second in a bright crimson red color.

"Rua… are you alright?" asked Yusei confused by what just happened to his opponent.

"Never better," answered Rua smirking, "Let's just continue the duel, shall we? I activate Pot of Greed," he said before he drew two cards from his deck.

"Good… now send five dragons to the graveyard," replied Lucifer, influencing every little move Rua was making.

Just as Rua was about to pick a spell card from his hand, his Crimson Dragon birthmark started glowing.

"I thought the Crimson Dragon already used all of its power… back then in the battle with Ylliaster…" said Lucifer looking at the glowing birthmark.

"Why is your birthmark glowing?" asked Yusei confused.

"I don't know," answered Rua honestly.

"I've got to stop it somehow…" said Lucifer thinking about how to stop the glowing birthmark.

'Lucifer, what is happening?' thought Rua.

"Don't worry, everything is under control…" said Lucifer making his own eyes glow in a crimson red color.

Suddenly Aki's, Ruka's and Yusei's mark started glowing too, but then the glowing stopped and the full Crimson Dragon mark appeared on Rua's back.

"Good… maybe now it won't bug me anymore. Anyway, Rua, activate-" said Lucifer before being cut off by something that seemed to be an electrical shock that came from the Crimson Dragon mark on Rua's back. Also, something that looked like a red orb appeared around Rua.

"You really want it this way? I thought I could use your power instead of fighting you off," said Lucifer as the electrical shock got more powerful, "Oh please… I've almost killed Kami-sama by myself and this stupid thing thinks it can keep up with me?" he asked rhetorically ignoring the electrical shock surrounding his body.

'From here, it seems that way,' thought Rua.

"I don't think so!" replied Lucifer angrily as he absorbed each and every electrical shock before the glowing mark parted and stopped glowing. Even the red orb around Rua disappeared.

"This will probably hurt me later… anyway, continue the duel! Activate that spell card!" commanded Lucifer.

Confused by what just happened, Ruka and Aki came out of the shack to look for Yusei and get some information as to why their marks glowed.

"There they are," said Aki pointing at Yusei.

"They're dueling… maybe that triggered our marks?" guessed Ruka.

"What's going on?" asked Yusei confused by the things that just happened. But through Lucifer's doing, Rua didn't really hear what Yusei just said.

"I activate Future Fusion, this card allows me to discard fusion material monsters from my deck and on the second standby phase after this card's activation, the appropriate fusion monster will be summoned," explained Rua before taking five dark dragon cards from his deck, showing them to Yusei for some reason and then sending them to the graveyard.

'Five dragons… I know only of one creature that can be summoned by combining five dragons…' thought Yusei, "What monster are you going to summon?" he asked almost being aware of what creature would soon show up on the field.

"Five God Dragon," answered Rua smirking.

"But Rua doesn't have the Five God Dragon in his deck…" commented Ruka.

"Good going… now, use the special ability of the Dark Creator to summon it," commanded Lucifer as Rua's eyes flickered once more.

Suddenly one of Ruka's monsters, called Regulus, showed up to Ruka.

"Ruka… your brother and Yusei are in great danger," said Regulus, being able to see the winged warrior behind Rua.

"What do you mean?" asked Ruka before Lucifer spotted her lion.

"If you know what's good for you, your owner and your stupid spirit friends, you better return to the deck and keep your mouth shut!" threatened Lucifer.

Regulus, knowing what this guy was able to do to him and Ruka, saw no other alternative than returning to the deck and not telling Ruka what was happening.

"Regulus… where did you go?" asked Ruka as her lion vanished.

"Ruka, what is it?" asked Aki concerned.

"Regulus just appeared and said that Rua and Yusei are in great danger but, then vanished without telling me why," explained Ruka.

"Maybe he was mistaken…?" guessed Aki.

"I hope so…" replied Ruka watching the duel.

"Next, I summon The Dark Creator in defense position, I can summon him if I have five or more dark monsters in my graveyard which is exactly the case," declared Rua as a giant dark warrior-like creature showed up on the field.

The Dark Creator

DARK / Level 8

Thunder / Effect

ATK / 2300 – DEF / 3000

'Dark Creator… since when does Rua have that card in his Deformer deck?' thought Yusei.

"None of those cards are in Rua's deck…" said Ruka.

"Everything for the path to victory has been assured," commented Lucifer smirking while looking at the cards in Rua's hand. "Use his ability and summon one of the dragons you just sent to the graveyard," he commanded.

"Now, I'm going to use his ability and banish a dark monster from my graveyard to summon another one, I remove Red Eyes Darkness Metal Dragon to summon another Red Eyes Darkness Metal Dragon in attack position," declared Rua as a big black metal dragon showed up on the field.

Red Eyes Darkness Metal Dragon

DARK / Level 10

Dragon / Effect

ATK / 2800 – DEF / 2400

"I didn't know you changed your deck," said Yusei but, Rua kept ignoring him.

'He didn't…' thought Ruka.

"Next, I activate my dragon's effect, which allows me to summon a monster from my graveyard or hand; from my Graveyard, I summon Red Eyes Black Dragon in attack position," declared Rua as a big black dragon showed up.

Red Eyes Black Dragon

DARK / Level 7

Dragon

ATK / 2400 – DEF / 2000

"Good, very good, but you can do better; activate the spell card in your hand," commanded Lucifer.

"But that's not all, I discard a card from my hand to activate Different Dimension Revival, with it I am allowed to revive a monster taken out of the game and equip it with this card, and since there is only one monster that is removed from the game, you can guess what I'm going to call out; show yourself, my other Red Eyes Darkness Metal Dragon in attack position!" declared Rua as another black metal dragon showed up on the field.

Red Eyes Darkness Metal Dragon

DARK / Level 10

Dragon / Effect

ATK / 2800 – DEF / 2400

"Summoning an army of monsters in one turn… I guess you guys are better students than I thought," said Aki while Ruka looked concerned.

"Let's see if this 'head signer' can stand a chance against me…" said Lucifer while pointing at a card in Rua's hand.

"I am aware that I can't attack you on my first turn but, I have other ways to finish you off; your suffering has just started. I activate Inferno Fire Blast, the original attack points of Red Eyes Black Dragon are taken from your life points," explained Rua as the big black dragon shot a blast at Yusei.

"I'll set two cards face-down and take a little break; you're on," said Rua coldly.

"I wonder if he's feeling it… if he's feeling that this is not a normal duel," replied Lucifer.

'What do you mean by that?' thought Rua coming back to his senses.

"Look at him… the weak must perish… I'll make sure that happens if he proves himself as weak," answered Lucifer looking at Yusei.

"Rua… what's going on?" asked Yusei feeling real pain.

"Yusei, are you alright?" asked Rua concerned.

"I felt real pain," answered Yusei, "How's that possible?" he asked while Rua couldn't help but, smirk at the pain of his opponent.

'Why do I feel satisfied with myself…? I shouldn't be… he is my friend, my hero…' thought Rua.

"Tell me… how do you feel?" asked Lucifer smirking.

Rua didn't answer; he couldn't admit how powerful and superior he was feeling right now.

"You don't have to say a word… I already know; you have a powerful dark side, the hopeless deck suits you, you'll leave your opponents hopeless about winning against you…" replied Lucifer.

'That's not me,' thought Rua.

"You say something else, yet your heart likes looking at Yusei being hopeless against you… doesn't it?" replied Lucifer.

'B-But…' was all Rua said, not being able to lie, he truly was feeling what Lucifer said, 'What did you do to me?' he thought, not accepting his own actions.

"With my help, you'll be granted victory and success; I think you could be a little bit more thankful," answered Lucifer, a bit angry.

'I don't want your help!' thought Rua.

"It's a little bit too late for that now, isn't it?" replied Lucifer pointing at Rua's right hand surface, a tribal '13' tattoo showed up on his hand.

'What is this?' thought Rua concerned.

"You'll find out as the duel ends, now let's see what this fool comes up with against my genius plan," replied Lucifer turning his attention towards Yusei who just got up from the ground.

"What is happening?" asked Yusei.

Rua's eyes flickered once more in the crimson red color; "It's your turn," he answered.

"Fine… draw," said Yusei before drawing a card from his deck.

Yusei VS Rua

1600 | 4000

6/6 | 0/6

34/40 | 27/40

"I send Bolt Hedgehog to the graveyard in order to summon Quick Synchron in defense position," said Yusei as he sent one card from his hand to the graveyard before the cowboy looking monster appeared on the field.

Quick Synchron

WIND / Level 5

Machine / Tuner

ATK / 700 – DEF / 1400

"Now… if I have a tuner monster on my side of the field, Bolt Hedgehog can return in defense position," explained Yusei as a hedgehog with bolts instead of spikes on his back showed up on his side of the field.

Bolt Hedgehog

EARTH / Level 2

Machine / Effect

ATK / 800 – DEF / 800

"Don't forget that I still didn't normal summon so, I can summon once again. I summon Tuning Supporter in defense position," declared Yusei.

Tuning Supporter

LIGHT / Level 1

Machine / Effect

ATK / 100 – DEF / 300

"Now, I'm going to tune them all together;" declared Yusei, "Clustering wishes will become a new shining star! Become the path its light shines upon! Show us yourself, Stardust Dragon!" he chanted as a big white dragon showed up on the field.

LV5+LV1+LV2=LV8

Stardust Dragon

WIND / Level 8

Dragon / Synchro / Effect

ATK / 2500 – DEF / 2000

'I'll have to get more back-up than just Stardust… but…' thought Yusei starting to doubt himself, "Dark Creator, two Red Eyes Darkness Metal Dragons and one normal Red Eyes Black Dragon… that's 10,300 attack points… even with Stardust being on the field… I'll get at least 7800 damage…' he thought.

"You'll need something better than that!" was all Rua said.

"Maybe this'll change your mind! Stardust Dragon, attack Red Eyes Black Dragon!" ordered Yusei.

"Activate the trap card, now!" commanded Lucifer.

"Trap card open, Red Eyes Burn; when Red Eyes is destroyed both players receive damage equal to the attack points of Red Eyes," explained Rua as a card flipped up, "And now it's too late to take the attack back…" he added, grinning evilly as Red Eyes Black Dragon got destroyed.

Ruka and Aki just stared in amazement; until today no one finished Yusei in one turn.

Yusei VS Rua

0 | 1500

3/6 | 0/6

34/40 | 27/40

Suddenly, the '13' tattoo on Rua's right hand surface started glowing in a crimson red color. There also was a change with his eyes. They changed to a crimson red color; the same color they were flickering earlier.

"It's a shame, really…; you didn't even last long enough for Future Fusion to be activated. And you are considered a champion? Ridiculous!" shouted Rua as his two dragons and his warrior disappeared together with Stardust Dragon.

"Rua…" said Yusei looking at the glowing sign on Rua's right hand.

"You wondering what this is?" asked Rua as he showed his right hand to Yusei.

"Shining Darkness… I command thee, take him as your servant," ordered Rua and Lucifer at the same time. As soon as those words were said, a stronger strange light came from Rua's tattoo, covering Yusei in a red energy sphere making him scream in agony.

As soon as Rua heard Yusei's scream, he once again returned to his senses and ran to Yusei trying to help him, but Yusei had fallen unconscious and there was another strange thing to that: his crimson birthmark was glowing stronger than ever.

While wondering what's happening, Rua's birthmark started glowing too. About ten seconds later, Rua and Yusei's birthmark stopped glowing but, the confusing part was that Yusei's birthmark vanished and a '666' tattoo on his right hand surface appeared, which was similar to Rua's.

"Don't waste your time, he won't wake up, not as the person you know him that is," replied Lucifer looking at Rua who was trying to wake up Yusei.

'How did this happen?' thought Rua confused.

"What do you mean? You were the one who did this… you should know how it happened," answered Lucifer grinning as he was feeling the darkness in Rua's heart rise a bit.

A/N: Like always, thanks to "you know not" for beta-reading and not losing his mind while helping me (I honestly hope I'm not that bad that he'd lose his mind). Anywho, why don't you review and tell me how you liked it, anything that... you think would make the story better or just comment somehow, alright? (I'm saying this even though I know won't do it.) Bye, see ya next time (hopefully).