A/N: Here's the next chapter. Enjoy! We don't own Yugioh GX or Yugioh 5D's.

Judai mostly kept to himself that night. Yusei got the feeling he'd be doing that the entire time he was staying with them, and he didn't like it. If only there was something he could do for his friend.

When morning came, Judai wasn't any less reclusive. He did, however, come down to get breakfast, though Yusei had the feeling he'd be taking it back to his room with him.

As Yusei wondered what he was going to do about Judai, the phone rang. He answered and saw the crazy scientist Akutsu.

"It's amaaazing!" Akutsu said to him, drawing out his words as usual. "The stone, the stooone! You must hear about the stoooone!"

"What is it?" Yusei asked. "What have you found out?"

"Stone?" Jack asked, having not been told about anything that had gone on before he got home last night. "What stone?"

"The energy emitted from the stone is fuuull of the most increeedible power we have ever seeen!" Akutsu continued.

Sho appeared beside Judai, unseen by Yusei, Jack, and Crow.

"Why, it appears to have the power to trrravel through time!" Akutsu did some spinning as he said this. "Maybe even space! Why, if we could haaarness its powers, we could use it to—"

"I think we should leave it alone," Yusei cut him off. "Messing with time's a very dangerous thing to do. One wrong move, and our world may no longer exist."

Akutsu deflated. "So, what you're saying is..."

Yusei nodded. "Find a safe place to store it so no one can use its powers."

While Judai was trying to ignore this call, Yubel had perked up at the time-travel bit. She looked thoughtful. "Hmm. Travel through time... Judai, why don't we..."

"No," he said aloud.

"Why not...?" Sho asked, getting the same idea as Yubel. "Maybe there's some way to reverse all of this... Then all the pain will go away..."

"You heard Yusei," Judai told him. "Besides, I'm not that much of a glutton for punishment... I remember what was going on when I fused with Yubel..."

Judai thought back to that day, knowing that he could have never lived with himself if he had taken any other course of action. After all, Yubel was his friend, and her problems were his fault in the first place. Honestly, he deserved this for the way he'd treated her and his other friends.

"But what if none of that happened either...?" Sho asked.

Judai looked at him, annoyed. "How do you think we're gonna undo my whole life?" He closed his eyes and shook his head. "No, better leave it alone."

"Hmm." Yubel thought about it for a moment. "Well, there may be one way..."

"Shut it, alright!?" Judai snapped.

"Just hear me out. What if there was a way to get to space and get to me before I fell to pieces and came back for revenge?"

"We're not gonna go screwing with the space/time continuum!" Judai yelled, earning the attention of his three new roommates.

"Judai? You okay?" Yusei asked.

"Yeah," Judai said, looking at him. "Yeah, I'm fine."

Sho pouted, crossing his arms. If he won't tell them, then I'll do it myself!

The lights started flickering. Judai closed his eyes and sighed. The other three jumped, slightly startled.

"What's happening!?" Yusei asked.

"Don't look at me!" Jack defended. "I haven't touched the lights yet!" He glared at the offending electronics. "But, if they don't stop blinking..."

Crow looked at the garage door. "WHAAA!?" he exclaimed, his eyes wide. "H-hey, guys! LOOK!"

The two turned to where he was pointing and looked, horrified. Blood was spreading across the garage door, forming some sort of message.

"What in the world!?" Yusei exclaimed.

Since this had never happened before, Jack suspected their new roommate might be behind it somehow. The message that appeared made Yusei wonder the same thing.

Written in blood on their garage were five letters: S. T. O. N. E.

"Stone!?" Jack turned to Judai and demanded, "Hey, you! What the hell's going on here!?"

"So, you are a zombie, then!?" Crow asked, turning to him as well.

"Hmm," Yusei said. "Stone..."

Judai growled, his eyes still closed. "Cut it out, Sho!" he yelled, opening his eyes and looking around the room. "I'm not doing that!"

"Doing what?" Yusei asked.

Jack and Crow just stared.

"S-so, what, Yus?" Crow asked after a moment. "You know what's happening here or something!?"

"I've got a guess," he answered. "I think this 'Sho' character is an old friend of Judai's here. And he's trying to tell us something. Right, pal?" He looked to Judai for confirmation.

Judai crossed his arms. "Maybe..."

"So, back to my other question. What is it he wants you doing?"

Certain that Yusei would put an end to this nonsense right then and there, Judai answered, "Using that stone your guys have to go back in time and change everything. Apparently, I'm the only one with any self control, which is weird since I'm the one with the problem, Sho!" He glared at the sky as he finished.

A ghostly whisper echoed through the room, heard by all. "Aaasukaa..."

"Asuka!?" Crow demanded, looking around frantically for the speaker. "Who's Asuka!? What's going on here!? Sho!? T-that you again!?"

Judai's expression darkened. "Sho...," he warned.

"Here...comes...the bride...," the ghost whispered again. "All...dressed...in...BLACK..."

"Okay! What the devil does that have to do with anything!?" Jack demanded.

Yusei looked thoughtful, almost seeming oblivious to the situation.

"Sho, I swear, if you don't shut up right now...!" Judai threatened.

The voice sounded different with the next words—female. "I'm sorry, Judai. But, if that's really true, then, I guess... I...don't think we can be friends anymore... At least, not right now, okay?" There was a pause, then the voice was back to normal, saying, "Then came the wedding... Hee hee hee..."

"Okay, that thing's really starting to freak me out!" Crow said. "What is it, anyway!? You guys sure it's that 'Sho' guy!?"

Yusei's eyes widened as he realized what the spirit was trying to say. Oh, no.

Judai's eyes teared up. "SHUT UP!"

"Judai," Yusei said. "Did you have a girlfriend way back then?"

"What!?" Jack and Crow asked.

"Where'd he get that from!?" Jack wondered.

Judai lowered his head. That was answer enough for Yusei.

"...You miss her. Don't you?"

Jack and Crow just stared, stunned. Judai, on the other hand, started sobbing, his head still lowered to hide the tears. Yusei watched him, thinking.

Jack recovered and said, "Okay. What's going on here!?"

Winged Kuriboh and Yubel appeared beside Judai, trying to comfort him.

"Kurii...," Winged Kuriboh said, rubbing against his partner.

"It's okay, Judai," Yubel told him. "Don't cry. We could always use that stone to—"

"How many times do I have to tell people to SHUT UP!?" Judai interrupted.

"Judai, when did this happen, and why?" Yusei asked, gentle but firm.

Judai looked at him, his eyes bright with tears. "What?"

"When did you fuse with her?"

Judai stared for a moment before saying, "During my third year of high school... Why?"

"And what year was that?" Yusei pressed.

"Why?"

"Good question," Crow said. "What are you thinking, Yus?"

Yusei just stared at Judai, his arms crossed.

Judai held his silence for another moment before hesitantly saying, "2017... Why?"

"Yeah, pal," Crow agreed. "No offense, but what does that matter? It's not like we can just—"

"Oh, yes, we can," Yusei cut him off.

"What!?" Jack and Crow asked.

"Are you saying you want to go back in time!? And what the blazes do you want to do that for!?" Jack demanded.

"Yeah, bro! Didn't you just say that—"

"I know what I said, but this is different. Judai doesn't belong in this time period, and the only way to fix that is to go back and stop him from fusing."

"Fusing?" Jack asked. "Fusing with what?"

"It's a long story, Jack," Yusei said. "I'll tell you later, okay, pal? Right now, though, Judai and I need to head out to my lab and retrieve the time stone."

"I already said, I'm not doing that!" Judai snapped. "You have no idea what that might do!"

Yusei started, "I know it's a huge risk, but—"

"But nothing!" Judai interrupted. "You don't know what kind of weird crap was going on, so don't even try to change it! I doubt your time will exist if you do!"

"Then why don't you tell me? Maybe there's a better place we could try for."

"When I fused with her, she was insane and vengeful, and there wasn't anything else that could have stopped her," he answered. "Then we wound up waking this great evil, though that was just the final straw. Point is, Yubel got screwed up by something that happened when I was five, and changing that will change everything, too." Thinking of what would happen if that little mistake of his had never been made, he added, "Heck, I'll probably give up dueling, then the Light of Destruction will wipe everyone out! That, or commit mass murder..."

"Hmm... So, you're saying there's nothing we can do?" Yusei asked. "No point in history that we really didn't need that was a part of all this?"

"I don't know! Just quit it, okay?"

A light bulb appeared over Sho's head as an idea came to him. Yusei was having an easy enough time getting Judai to speak up, so hinting at the events of their third year might get him curious enough to ask and, maybe, lead them to Yubel's idea of what time to go back to in order to fix all of this.

The ghostly whisper was heard again. "Duel...duel...duel..."

"Sho, I'm not in the mood for more torture from you right now, so shut it!" Judai snapped, eyes closed and arms crossed.

"Aniki... That's mean... I'm just trying to help...," Sho said, only heard by Judai.

Yusei was quiet a moment, wondering what exactly that had meant. "Duel...?" he asked finally.

"You're not helping, Sho!" Judai snapped. "Seriously..." Silently, he added, Writing stupid messages on the wall, imitating and quoting Asuka...and now, he's doing that! How is any of this helping!?

"So, does that mean that dueling could help?" Crow asked. "But that makes no sense! How can we solve this one with a duel?"

"Judai, what did he mean by that?" Yusei asked, just as Sho had been hoping he would.

"He sounded like a zombie!" Crow said, freaking out. "Is he one, just invisible or something!?"

"Wait, what!?" Jack demanded.

Judai, who had missed the part about being invisible and was tired of being called a zombie, thought Crow was talking about him again. He yelled, "Yes, I'm a zombie! Zombies are the living dead, and I've been sent to the stars plenty of times! Are you happy!?"

Jack gaped at him, hoping he was joking and unsure what "sent to the stars" meant.

"Aniki...," the voice said again. "Duel me...duel...duel...duel...let's duel...duel..."

Crow, tired of being haunted, said, "Alright! I'll duel you! Just quit it already!"

"Duel...duel...duel..."

Judai crossed his arms, annoyed. "Don't duel him, he's playing Duel Zombie."

"Duel Zombie?" Yusei asked.

Jack, trying yet again to get a handle on the situation, asked, "What the devil is going on here!?"

Judai looked at Jack and said, "You're talking to a 2000-year-old friend of Yusei's who he met when he followed some guy from the future of now, even, back in time after he stole his Stardust Dragon. If not for Yusei, I would have found out a lot sooner that I can't die, the world would have ended, and we wouldn't be having this discussion."

He turned to Yusei and went on, "As for Duel Zombies, Yubel turned everyone into them. They only exist in alternate dimensions, and they ambush you and force you to duel until you lose. Once you lose, you become one of them." Glaring around the room, he snapped, "What does that have to do with anything, Sho!?"

"Why did Yubel do that?" Yusei asked.

"And what do you mean, you're 2000 years old and can't die!?" Jack demanded. "Everyone dies eventually!"

"Yeah, and then comes back again and again and again... Sheesh. Even after the light's been beat, I still keep getting reincarnated...," Judai said quietly to himself. "And you'd have to ask her," he answered Yusei. "I'm a bit fuzzy on the details after 2000 years, especially since I was kinda busy trying to survive and save my friends, including Duel Zombies Sho and Manjoume!" He glared at the sky again as he said that last part.

"I needed their energy to revive," Yubel told Judai in his head, and he could just hear the shrug in her tone. "Sue me."

"Right. She needed their energy to revive after over ten years in space being attacked by the Light of Destruction," Judai said, not caring if anything he said made any sense just then.

"Space?" Yusei asked.

Knowing Yusei could see her, Yubel appeared and said, "Yeah. And, once that hell was finally over, I crash-landed back to Earth, falling apart in the harsh atmosphere. I may have been fine if not for that." She looked at Judai, arms crossed, and added, "Thanks again, Judai. I really enjoyed my trip."

Judai looked at her, depressed, and said, "Yeah, well, you're getting your revenge now, aren't you...?"

Yubel was silent for a moment. Finally, she said, "I'm sorry... That was uncalled for. Still friends?"

"Yeah," he said. "Still friends."

Crow and Jack gaped—apparently they could also see Yubel.

"So, I guess that's Yubel, huh?" Crow asked, calm. Louder, he demanded, "But who's the other guy!? And why can't we see him!? Is his name really Sho!?"

Yusei ignored his frantic friend, figuring that the spirit known as Sho was just hiding, and turned back to Judai.

"So, let me get this straight. You sent a card to space that crash-landed in pieces back to Earth, causing the spirit to want revenge, and this happened?"

"That sums it up nicely, based on what you know," Judai said grudgingly, arms crossed.

"So, if that card hadn't fallen apart and was saved by you, what would have happened then, I wonder?"

Judai shrugged. "I don't know."

Yusei looked thoughtful for a moment. Finally, he looked at Judai and asked, "Wanna find out?"

Judai just stared at him. Apparently that was a no.

"Judai, listen," Yusei said. "That spot sounds like it might make a huge difference without damaging the space/time continuum. Perhaps, if we go there, we can free you from this."

Judai hesitated. "I don't know..."

Sho appeared beside Judai, still hiding from the three Signers, a lame look on his face. "Rick Manjoume sure was cute, wasn't he...? With his dark black hair and hazel—"

"Zip it!" Judai snapped.

"Well...?"

Judai hesitated again. It wasn't just the idea of destroying the space/time continuum that was holding him back—he didn't want to cause himself anymore pain, and he wasn't sure what would happen if he went back in time to when everyone he cared for was still alive.

"Alright," he relented. "What have I got to lose, anyway?" Secretly, he thought, I know I'm gonna regret this...

Yusei smiled and said, "Then let's go, Judai. Let's find that one spot in time and reverse it."

"Whoa," Crow said. "Hold up. You're really going? But won't you have to go to outer space? How are you gonna do that?"

"Crow's right, Yusei," Jack said. "You're not an astronaut, and I doubt you'd be able to find that card, anyway."

"Hey, we've done the impossible before, Jack. For example, remember Z-ONE? So, all we have to do is figure out how, and we can stop this from there."

Crow asked, "So are you saying we should come with you, then?"

"That's up to you to decide," Yusei answered, heading for his D-Wheel. "But I'm going, and that's final. Let's go, Judai."

Judai walked over hesitantly, still not sure that this was a good idea. The two boarded Yusei's D-Wheel and headed out.

Crow stood there for a moment before calling, "Hey! Wait for me, pal!"

He hopped on his D-Wheel and went after them. Jack chose to stay behind, seeing this as a foolhardy quest anyway. Though staying behind meant he got to deal with the visitors who came over—Aki and Carly, who was carrying a gift basket.

"Uh, hey, Jack," Carly said. "Um, about last night..."

Jack jabbed a finger in her face, annoyed, and said, "I don't know what you were doing to get yourself arrested, but you'd better never do it again! I've got more important things to do than visit the Facility at 1 in the morning, understand?"

Carly held up her basket. "Right! I'm sorry, Jack! Here! Please accept this apology basket as a token of my thanks, too!"

Jack stared blankly at the basket for a minute before taking it. He was about to ask Carly to leave when Aki said, "Excuse me, Jack? But where's Yusei? I thought he'd be here."

"He took some kid from the past to his lab to see about traveling back in time with him," he answered. With a humph, he muttered, "I'm sure this'll never work. What the hell's he thinking?"

"He's doing what!?" Aki asked. "Why!?"

"Good question! And what do you mean, some kid from the past!?" Carly added frantically. "You mean that boy from last night!? What's going on now!?"

Ignoring the frantic reporter, Jack explained to Aki what had happened. When he had finished, Aki decided she wanted to go, too, so Jack escorted her there, with Carly following in search of a story.

On the way to the lab, Yusei called Akutsu to tell him about the change of plans for the stone. Much to his annoyance, the guy had been continuing his study of the stone after getting Jagger's approval. Well, he supposed it was for the best, seeing as he had changed his mind about using it.

It was around noon when the three arrived at the lab.

"Chief!" Akutsu greeted. "I just knew you'd change your mind! I've already prepared the tiiime stone for immeeediate use! It's hooked up to the Mooomentum, and everything's running smooothly, sir!"

As he spoke, he was spinning and waving around like a maniac, then suddenly, with the last word, stopped and bowed calmly. Best Judai could figure, the guy was one of those mad scientists you saw in science fiction movies.

"Great," Yusei said. "Then set a course for..." He looked at Judai, wondering what time it was that they were shooting for.

"I met Viper at the beginning of O'Brien's first year," Yubel said in Judai's head. "Sometime around then should do. Like the summer before?"

Judai hesitated before saying, "I guess the summer before I started high school...so, 2014."

"Set a course for the summer of 2014!" Yusei said.

"Right awaaaay, sir!" Akutsu said, hurrying to do just that. He said something else to Yusei, but Judai missed it as a voice spoke in his head.

"Okay, that guy's nuts," Yubel observed. "And I thought Brron was bad..."

Judai winced at the name, as it brought back some very painful memories.

"Come on, guys," Yusei said, "we better get ready. Akutsu told me that we need to be in the room with the Momentum generator in it, so we better hurry over there."

The trio started walking off when they heard a voice behind them.

"Yusei! Wait up!"

They turned to see...

"Aki!" Yusei said.

"I'm going, too," she told him. "This mission could be dangerous, and you may need me."

Yusei nodded, then caught sight of Jack and Carly. Jack had a few bags in hand.

"You can count me in, too. I need a vacation from this place," Jack said, glancing at Carly.

She grinned awkwardly, laughing nervously. "Again, I'm so sorry, Jack. But I didn't know who else to call, seeing as I don't really have any family or friends in the area."

"Just try to stay out of trouble next time, alright? Because I'm not bailing you out again. You got that?" he said, annoyed. Really, somebody remind him of why he put up with this girl?

"Right! Sorry, Jack!" she said, bowing her head repeatedly. "I'll be more careful from now on! I promise!"

"Oh, you'd better," he muttered.

Yusei chose to ignore the weirdness. He nodded and said, "Great. Thanks, guys. I appreciate it. Now let's go."

"Wait!" Akutsu said. "Before I forget, you should probably take this visor with you. It contains the controls that should get you home."

It never ceased to amaze Yusei how fast this guy worked. He nodded, taking the visor and putting it on.

"Last chance. You sure this is a good idea?" Judai asked, really hoping they'd say no.

Yusei and Crow had heard plenty of this on the way over. Tired of his constant doubts, they chose to ignore him. Jack and Aki followed their lead.

Arms crossed, Jack asked, "Before we go, anything we should know about changing the past? Like things to avoid, possible causes of black holes? You know, stuff like that."

"Just one! Only alter the course of the event you aim to change!" Akutsu said. "You can talk to annnyone there, but don't disturb their lives tooooo much! For example, don't fall in love, or you'll wind up being your owwwn grandpa!"

"Thanks for the tips!" Crow said. "Now let's get going!"

The four Signers walked off, Judai following reluctantly.

In the room with the Momentum, they heard Akutsu's voice ask if they were ready. Yusei affirmed that they were, and the quickly-built time stone addition to the Momentum was activated, Akutsu going nuts the whole time.

While it warmed up, a green-eyed spirit entered the Momentum room with another spirit, a red-eyed one. The green-eyed spirit watched happily.

"Looks like it worked," he said. "Too bad it took me 2000 years, though. Aw, well. So, what do you say, pal?" He turned to his friend. "Care to tag along?"

The red-eyed spirit nodded.

"Great! Then let's go! I can't wait to see how this'll turn out!"

The red-eyed spirit nodded again, and the two turned into lights, one red and one green, before hiding themselves in Jack's luggage bag.

The room filled with a rainbow light, and the gang found themselves in a wormhole, heading back in time, hopefully to fix Judai's problem.