Welcome, everyone to the Adventures of Nexus, the multi-wielder. I want to clarify that this fanfic is going to crossover with the main fanfic which is the tri-way fanfic between, Kingdom Hearts, Hyperdimension Neptunia, and RWBY, so when this fanfic crossovers with the other one, read the others to be clarified on what happens. Anyways disclaimer, I do not own SAO or the characters from the anime, games, or anime, except my Original Characters and certain situations that I'll make for my characters. With that said, I hope you enjoy.

[November 6, 2022]

"Goro! It's time to wake up!"

A ten-year-old girl was trying to wake up her older brother.

"F-Five more minutes,"

"Wake up! You said to wake you up early! You wanted to be first in line for Sword Art Online." The girl said still trying to wake up the boy named Goro.

"Alright. Alright. I'm up. Go get Shinzo while I get ready."

"I'm up already. Akane basically jumped on me till I woke up."

A boy enters the room who looks a bit younger than his sister, Akane.

"Ouch kid. You got the rough treatment. Ok, you two get out while I change. Then we'll go." said Goro who had a hard time getting out of bed.

Soon after the three kids were waiting in line for the vastly popular MMORPG Sword Art Online game. Iwahashi Goro happened to be a beta tester for the game and worked together with his old friend Kirigaya Kazuto who is one year older than him.

Iwahashi Goro is the second oldest of his four siblings being a twelve-year-old boy who loves to play video games and watch anime. Due to him playing games often, he considers himself a veteran in recent released games and games that came out many years ago. To adapt to this lifestyle and taking care of his siblings, he has taken up cooking for these occasions. Goro happens to look like an average boy while not being muscular and having a small tan. He thinks logically and always plans the future and cares for others.

Iwahashi Shinzo is the youngest of his four siblings being nine years old. Shinzo isn't a big gamer as his older brother as he goes out more during the day and is the sporty person. He is tall for his age of being 5'2, almost as tall as Goro who is 5'5. Due to Shinzo past wins in all kinds of sports even against adults, he developed an ego and is arrogant and impatient which is the complete opposite of Goro who is more relaxed and understanding.

Iwahashi Akane is the second youngest and is the only girl among her siblings. Akane has that cute persona to her looks. She is fairly popular and has many friends at school and is good at keep track of stuff. However, she is very clumsy and knocks over things very easily causing Goro to take more time making sure that she doesn't break anything valuable. She is the shortest one being 4'9.

"We actually got a good spot in line," Goro stated with a surprised expression on his face. He looks behind him. "Guess we came in just before everyone started to make a line."

"We could've lost it because you wanted to sleep a bit more," Shinzo stated with a snarky attitude.

"Yeah, it was my fault. Kazuto and I were in a call till 2 am. We were planning how we were going to play the game."

"You're not playing with us? Asked Akane. She had a sad look on her face.

"No, that's not it. We planned stuff on SAO that is way too difficult for you too and we're going to be playing when you two are sleeping and I'm not letting you two play at that time. Mom and dad would kill us. We'll play during the day, how about that?" said Goro.

"That's fine Big Bro!" Akane said with a more cheerful look that gave Goro to take a deep breath and he looks over at the cashier who signals them come over.

The three siblings were back home after buying two copies of Sword Art Online and the family already had another copy from the oldest brother, Hozumi who is the lead artist in creating Sword Art Online and was able to receive a free copy of the game for his hard work. That was the copy that Goro used for the beta.

12:50 pm

Goro was going over some basic towards his two younger siblings.

Goro says "There are a couple rules on online games. First is that you never say your real name or use it as your username. Second is that you never tell anyone where you live or how old you are… Scratch the first two. Rule one. Never tell anything about yourself, your friends, or your family. Understand?"

The two kids nodded slowly.

"I already knew that. Why are you telling this to me?" ask Shuzo.

"It's a matter of our safety, you should know that. Just making a precaution," states Goro as he looks at the time. It reads 12:58. "Ok, you two. Go to your rooms and sign in. When it says one o'clock sign in immediately. See you both over there. My username will be Nexus as always."

"Ok!" said the two younger siblings as they rushed towards their rooms at record speed. The excited look on both of them brought Goro a small smile as picks up the Nervegear.

Goro quickly logs in as the time slowly reached one o'clock. He closes his eyes at yelled out "Link Start!"

The NerveGear's pre-login checks flashed right in front of him. Soon multiple particles that would make someone have a seizure passed through him. Afterward, the NerveGear shows a notification about Goro's Character Registration. Goro presses the yes button on using the beta-test data. After it says: Welcome to Sword Art Online! Soon, Goro character is calibrated into a town. Goro easily recognized the town as the Town of Beginnings.

"Man, it feels great to be back. Everything looks smoother than the beta which is really saying something," stated Goro who is named Nexus.

Nexus happens to look very similar to Goro except he made himself a bit taller. He also went with a hairstyle he had seen from an RPG that had come out in 2002. He is wielding a one-handed sword. Otherwise, there are no major differences than his real-life self.

"Now, where are those two? They should've told me what username they would use." Said Nexus as he looked around seeing many players spawning. He also sees a surprising amount of girl players which cause him to facepalm. "I can already tell many of these people are guys with girl avatars."

Suddenly Nexus receives a tap on that back as he turns around to see a tall, grey-haired man who looked like a famous sports star. He is wielding a one-handed sword and a buckler. He also sees a girl who looks like an idol he constantly sees on the news who is wielding a knife. The grey-haired man speaks up.

"Would you happen to be Nexus?" Asked the man.

"Yeah, that's me. How, unless… So you guys found me. That was quick. So, what did you guys pick as your usernames?"

The grey-haired man who Nexus sees as Shuzo went first. "I chose Hera. It's short for Heracles who was the god of sports. Seems pretty smart if I say so myself."

"It does fit with your sporty nature. Nice job Hera. What about you little one?" asked Nexus.

"I chose Nirvana. It just popped into my head so I used it. It sounds very feminine." said the girl named Nirvana.

"Perfect! You guys didn't use your real names like last time we played an MMO. Anyway's… Let's head out to the outskirts for the basics." Said Nexus.

Nexus dashes causing Nirvana and Hera to chase after him. They soon reach a place where the three sees a bunch of boars spawn in.

"So, do we do the same in WOW where we just spam skills at them until they die? And Nirvana here will heal us?" Asked Hera.

"We can't really do that. Right, you guys have no idea on how skills work in this game. First, there is no magic in this game." Says Nexus.

"No magic? Phooey. That means I have to get up close and personal. I like long range." Said Nirvana who looked very disappointed in hearing this.

"Yeah. They made a bold move making an RPG with no magic. Anyways, we have to do the appropriate Pre-Motion in order to use these Sword Skills. We can only use skills once the system recognizes the motion. For example that boar over there." Nexus said as he points towards the boar near them. "I'm going to show you the Pre-Motions. You'll feel an explosion of energy being released when, well you'll see."

Nexus rushes towards the Boar as Nirvana and Hera stare at him closely. Nexus attracts the boar's attention as he raises his blade at his waist. Soon the blade turns blue as Nexus swiftly jumps up dodging the boar who was rushing at him. He then turns around and swings his sword horizontally right and flips his wrist and does another slash except it goes left. The boar health bar is reached 0 as the boar goes down into pixels. A screen pops up showing Exp, Col, and Items that Nexus has received. He walks back to his siblings who were clapping.

Nexus bows and says, "Thank you both! You both have been a wonderful audience. So do you understand the principles of Sword Skills?"

"Yep. I understand big bro!" says Nirvana as she takes out her dagger. She positions herself as Nexus did, but nothing happens. "Huh? Why isn't it working? Am I doing it wrong?"

Nexus laughs. "No, it's just that there are different motions for each Sword Skill. You just started so you should have Side Bite… so do the position again. Nirvana does the position of the Sword Skill as Nexus inspects her. "Oh, I see. Your arm needs to be a bit more bent.

Nirvana readjusted her arm as her knife turn brown and dashes and slashes towards the right.

"Eeh. It's decent. I can do that and better." Said Hera as he takes out his sword and gets into position as his sword receives a blue color same as Nexus. He pulls off the same move as him of slashing right and then left. "See. Mine was cooler and it has one more hit."

Nirvana has an annoyed look on her face. "You don't have to be like that, Hera. Jeez, you're so mean."

"Both of you, please stop fighting." Said Nexus. "We're here to have fun, so let's go grind up a bit. We can meet with Kirito later."

"Kirito?" The two siblings questioned the name.

"It's um Kazuto. Anyway's let's go kill some mobs!" yells Nexus as he sends the two a party invite and they accept.

After some time have passed and Nexus levels up to 4 while his siblings had leveled up to Level 3. Nexus also didn't like where the pre-motion of Horizontal arc was, so he switched it to having it more around his waist in a relaxed manner. He was right about to change as he was able to perform it at an easier rate. The three returned to The Town of Beginnings as they enter the weapons store. They browse through the weapons and Nexus… buys one of each weapon type to his siblings' surprise.

"Don't tell anyone, but Hozomi says that there is a special perk if you master every weapon." Whispered Nexus to his siblings. The two siblings looked surprised at this fact. "Anyways, you two should go do some shopping. I need to do a quick errand."

The two siblings rush through the stores as Nexus writes a book with the title: Sword Art Online: Sword Skills and Items for Dummies by Nexus. He swiftly finishes the pre-motion for the skills and the effects of items and makes 10,000 copies and puts it in the shop menu for free. He then meets up with his two siblings as they went to the place where they were going to meet Kirito.

"He's late. Is he going to make us wait?" Said Hera who looked ticked off. "... Oh, shi-"

Nexus shouts "No cursing! What is it?!" He looks at his brother with a shocked face.

"I forgot to do my homework…" Hera says quietly.

"..." Both Nexus and Nirvana were silent as they shake their head in disappointment. "Go log out and do your work!"

Hera jumps a bit and quickly opens his menu and tries to log out.

"Um, how do you log out?"

…

There was a pause where Nexus facepalmed and opened his menu and went to the settings to find out that the login button was blank. He taps it, but it doesn't respond.

"Well the game might still have a few minor bugs, but we should contact a GM for this," said a confused Nexus.

Suddenly Nexus, Nirvana, and Hera were teleported. They reappeared and found themselves back at the center of the Town of Beginnings.

"A forced teleport. I hope this is an intro or something." Says Nexus.

Suddenly, a giant, robed, faceless figure formed from what appeared to be blood in the sky.

"Wow, they really went for the M-rating in this," says Hera who looked confused.

The hooded figure started to speak, "Attention, players. I welcome you to my world." This caused confusion and everyone talked to each other until the hooded figure continued. "My name is Akihiko Kayaba. And as of this moment, I am in control this world. I'm sure you've already noticed that the logout button is missing from the main menu. But this is not a defect in the game. I repeat. This is not a defect in the game, but a key feature of Sword Art Online."

Random people started little outbursts.

"What the hell?!"

"Is this a joke?!"

Nirvana holds Nexus tightly, but he barely notices. He breathes out very faint words before grabbing Nirvana and Hera near the edge of the center of town only to intercept with a barrier. He watches Kayaba very patiently.

Kayaba continues, "You cannot log out of Sao of your own will. And no one on the outside can shut down or remove the NerveGear. Should this be attempted, the transmitter inside the NerveGear will emit powerful microwaves, destroying your brain and thus ending your life."

"Nexus… (Nexus looks at his sister.) If we can't log out then what'll happen to us? Will we see Yuu-" Nexus interrupts her with a quiet ssh and tries to calm her down.

"Nexus, is that true? Can the NerveGear really fry our brains?!" Yells Hera who looked very afraid.

"Yeah. He's right. The transmitter's signal work just like microwaves. If the safety were disabled, it could fry your brain. Something else is up, though."

Kayaba once again continues, "Unfortunately, there have been several instances where players' friends and families have ignored this warning and attempted to forcibly remove the NerveGear. As a result, 213 players have exited permanently, from both Aincrad and the real world." Many news articles popped up around Kayaba. "As you can see, news organizations across the world are reporting on this situation, including the multiple deaths. Thus, you can assume that the danger of a NerveGear being removed has been reduced. So, I would like you all to focus on clearing the game. But be sure to keep this in mind. There is no longer any function to revive someone within the game. The instant your HP drops to zero, your avatars will vanish forever. And simultaneously, your brains will be destroyed by the NerveGear."

"How can he say that like it's nothing?" Nexus looks at his brother and sister and he envisioned them both being killed by boars and fear strikes him. "If what he saying isn't a bunch of bull then, we need to head to the next town and receive all the easy quests. That way, we can have a high enough level to survive. This sounds cowardly, but I got no choice."

Everyone had a shocked face.

"The one condition for your escape is to complete this game. You are presently on the lowest floor of Aincrad, floor one. If you make your way through the dungeon and defeat the Floor Boss, you may advance to the next level. Defeat the final boss on floor 100 and you will clear the game."

"Defeating the game?"

"No one in the beta beat the game."

"Are you crazy?!"

"Now then, finally, I've provided you all with a present in your item storage. Please see for yourselves."

Hera and Nirvana quickly open their inventories and took an item which happened to be a mirror. After seeing the item Nexus did the same. They looked in the mirror and a bright light appeared. When the light disappeared, Nexus looks at his siblings, to see that they looked like their real-life selves. Hera was the first to comment on what happened.

"What happened? Why the heck do you guys look like that?"

"The NerveGear covers your entire head with a high-density signaling device. It can see what your face looks like. But our body figure, when we first put on the NerveGear, there was something called calibration. We had to touch our bodies all over."

Nirvana was embarrassed as well as freaking out as her brothers looked at her as she was inspecting herself.

"Hera… B-Bi-Big Bro! Please never speak about this…"

"N-noted sis. Hera. When we get out of this game, we will never speak of this day."

"Right. Nothing bad. Again… why is this a thing?"

"I believe Kayaba will explain," says Nexus trying to be calm.

"Right now, you must all be wondering, "Why?" "Why would Akihiko Kayaba, developer of Sword Art Online and the NerveGear, do such a thing?" My goal has already been achieved. I created Sword Art Online for one reason… To create this world and meddle in it. And now, all is complete. This ends the tutorial for the Sword Art Online launch. I wish you luck, players." The hooded figure was glitching out and disappeared.

Nexus reached out his hand to where the barrier was and it was gone. Soon he saw a figure that looked like Kazuto and grabbed his siblings to the area that Kazuto ran away. He soon sees him with a red-haired person with a bandana.

"Kirito! Is he a beta tester?"

"Nexus? Yeah, Klein. He is."

"Thank god, I found you Kirito," Nexus looks at the man named Klein. "Hello, and yes I'm a beta-tester. I'm Nexus." Nexus then introduced his siblings. "The guy over here is Hera. And this little goober is Nirvana. It's a pleasure to meet you and I wish this was a better scenario."

"Dammit. I forgot about your siblings. We've got to be extra careful now." said Kirito.

"Yeah, that's the problem. We've gotta watch over them at all times and this will really hinder our progress," said Nexus while he was thinking, before planning his next move.

"Then we'll just grind!" said Nirvana which shocked Nexus a bit.

"Grind? I mean I guess. Kirito. It's ok to tag along with you, right?" asked Nexus.

"I don't mind. More people the better. And Klein. You said you're going to be with your friends, right? Best of luck." says Kirito as Nexus, Nirvana, and Hera walk towards his side. Nexus sends Klein a friend request.

"If you ever need help, with grinding or such, let me know. I'll be there to help ya. Take care!" said Nexus.

The four runs away from Klein as he mumbled something before running back to central square.

"Kirito, if I remember correctly there was a mid-boss on the road to the next town. Should we fight it or hurry up on through?"

"Fight it. I met with Argo before seeing Klein. She said that this boss drops more exp then the beta and good beginning armor." said Kirito.

"If this is a first to kill and never respawn boss, then how does she know?!" wondered Nexus.

"Don't ask me! All of her info has been legit so might as well to just keep on trusting her!"

"Fine, but if this is false, we're going to have a word with her!"

"Mind, letting us in your conversation? Unlike you two, Nirvana and I weren't in the beta," asked Hera would an irritated look.

"On the way to the next town, there's a giant centipede that serves as a middle-level boss. If we fight it, we'll get all the good stuff for ourselves and split it evenly. And, if I remember correctly, it's weak to spears?" said Nexus.

"Yes, but you don't have one. Why bother asking?" said Kirito as he just slashed a wolf before continuing to run with them.

Nexus opens his menu as he gets behind his siblings and switches his sword to a spear which shocked Kirito. "I got one of every weapon type as usual. You should know by now, that I would do something like this."

"You have a point. That looks like it over there." Kirito said as he points to the massive centipede. It's two bars of health was shown.

Kirito activates Rage Spike and was able the stab the body, but the bug shrugged it off and tried to pinch Kirito but Nexus countered with Fatal Thrust and the five stab sword skill seemed to have injured the boss quite a bit. Nexus yelled Switch and ducked down as Kirito prepared Horizontal Arc and each slice cut off a pincer. Hera then followed with the same sword skill at the same time, but both did minimal damage. However, the boss seemed to lost half a bar of health.

"Wait, where's Nirvana?!" shouted Hera as he looked around. Nexus saw her just standing in the middle of the road. He realized something.

"F*ck, she's afraid of centipedes. I forgot. That of all things!" said Nexus before running to her sister and trying to calm her down. She's fine with other bugs but now centipedes for whatever reason. "Hey kid, this boss thing is a one-time thing, I promise. After that, you'll never have to fight another one after this."

Nexus's words of reasoning weren't going through her as Kirito and Hera were having a difficult time trying to keep the centipede at bay, but were constantly getting pushed back.

"Akane!" Nexus said as he shaken her back into reality. "Get a grip! I know this is a lot to take in. But, we can't just stand around and do nothing. We gotta get back outside. Mom, Dad, Hozumi, Aiko, and Yuuki can't comprehend what's happening right now. If something were to happen to us, they'll go ballistic. I won't let that happen. I'll keep Kirito, Hera, and you safe. But you've got to work with me. Alright?"

"Y-Yes, bro!" said Nirvana still shaken, but a bit braver.

"Great. Now let's take care of this thing," said Nexus as both of them went to fighting the centipede. "Switch!"

Kirito just landed another Rage Spike and noticed Nexus rushing in with his spear as he jumped to the left as Nexus's weapon glows purple. Nexus activates Fatal Thrust at the belly of the centipede and the impact of the spear caused the centipede to be incapacitated for a bit as Kirito, Hera, and Nirvana constantly slash it all over its body. Its bar of health went to about a quarter of the final bar as Nexus jumps back and his weapon turns a brown color and throws his spear at the eye of the centipede which seemed to do the final blow as the bar went to zero and the monster exploded into particles. Everyone got a load of exp that raised everyone's level by 2.

"Let's see what we got later. Let's head on to the next town." said Kirito "Medai Village should be up head."

Everyone nodded and they all started to continue running. It wasn't for another good solid hour before they made it to the Hanai Village. It was a pleasant village near a lake with wooden houses.

"This place, was where I met Argo, right? I remember this is where I learned about the Anneal Blade. Boy that was a fun quest." said Nexus as he remembered the times of the beta. "Anyways I'll go accept some quests around here so go rest up at the inn."

Nobody had any objections as they all looked exhausted, probably from the fight against the centipede. They went ahead of Nexus as he went from NPC to NPC and trying to get a few spare quests. After getting 4 quests, he went to the inn and Kirito had him follow to their room.

"So what did we get from the boss? I expect some decent gear," said Nexus as everyone took out what the system gave them for beating the boss.

"A broadsword, three times as strong as the one you have, Nexus. Umm, two knives, two sets of armor, one for males and one for females, and 7 healing potions with 3 teleporting crystals." counted Hera.

"Well, this looks like a major success. We have a severe lead against the other players," said Kirito with a smile.

"But, what about those who don't know how to play the game? I feel bad for them. They don't have anyone like you, big bro and Kirito to help themselves survive this game. Won't they die?" asked Nirvana with a worried look.

"Don't worry, I wrote a quick manual on how to use skills and items before the big announcement because this game doesn't have a tutorial. They should be fine if they follow all the steps properly," said Nexus.

"..." Kirito was very silent about the subject. Nexus, however, saw this and signaled him to walk outside and he silently followed.

Oh boy, everyone is locked up in this death game. How will Nexus keep himself and those close to him from losing this death game? What does he want with Kirito and what's his next move? If you see something that you hate about this Fanfic or have any question, you can tell me in the comment section, and I'll be glad to reply to your questions. With that being said, hope you had a wonderful day! This is masterstarman1002 signing off.