Welcome to my first Xenoblade Chronicles story! This is going to be a crossover between 1, X, and 2. Unfortunately, I can do only crossover of two but I'll incorporate Xenoblade Chronicles X in this story. As mentioned in the synopsis, the setting takes place after the endings of all the Xenoblade games, so SPOILERS are IMMINENT. I suggest you DO NOT READ this if you do not want to be spoiled for any of the three games mentioned.

This story is based off of and inspired by The Seven Deadly Sins/ Nanatsu no Taizai. The concept of the sins is not present in the story but are replaced with the 5 Stages of Grief. For those who follow the Seven Deadly Sins/ Nanatsu no Taizai, the Ten Commandments will be present in this story. 10 characters will be like the Ten Commandments in a way where they have powers like the Ten Commandments in the Seven Deadly Sins. This is more of a reference to it rather than a my own creation thing. I do not own any of the Xenoblade Chronicles franchise nor the Seven Deadly Sins/ Nanatsu no Taizai. All credits go to the respective creators.

Anyways, I hope you guys enjoy my little story project. Read and enjoy!

Chapter 1: Before Worlds Collide

Multiple universes exist in this world. None of them acknowledge that they exist among one another. They do not recognize it. Is it possible for such an idea to have representatives of each universe meet together for the first time a reality? It seemed unlikely but possible.

It all changed one day.

After defeating the god in their homeland, Shulk and his friends had lived in the new world that he had created. Many lifeforms were living peacefully with one another as wished by the divine entity, Meyneth, and former leader of Mechonis, Egil. Colony 9 had been changed drastically after Shulk slew the god. A vast wave of water across one side of the Colony, which was not seen previously, was used by many residents for their own purposes. Just across the waters was the fallen titan known as the Bionis. No longer shall the Homs, Nopon, High Entia, and the Machina live on the body of a Titan.

Many months had passed since the new world was created. Colony 9 did appear to be similar to how it was back on Bionis. The difference was that they had an ocean rather than a lake that surrounded them. A young, blonde Homs had woken up from his usual sleep, ready to take on another day of his new peaceful life. His home was a newly built house just adjacent to the man he looked up to, the one who formerly wielded the legendary blade before his right arm became paralyzed.

Once he made and ate breakfast, Shulk cleaned up and wore his normal attire before exiting out of his house. Although, there was a knock heard from his door as he came downstairs.

"I'm coming," he said in his British accent. Shulk tightened his shoes before opening the door to see who was visiting him. Standing before him was a taller, muscular figure with auburn hair. "Reyn! How's it going?"

"I'm doing great, Shulk," Reyn said as he wrapped around his best friend's head with his left arm before using his free fist to rub his hair. "I was stopping by to see if you want to do something."

"I wish I could," Shulk laughed before speaking. Reyn released his embrace, and the heir to the Monado had tidied up his hair. "I promised to spend the day with Fiora."

"Man," Reyn felt a bit sad to hear that Shulk was already occupied for today. However, he was not upset because he acknowledged his childhood friends' relationship. "That's a bummer."

"Sorry about that Reyn," Shulk expressed a bit of guilt inside of him.

"Ever since Zanza was slain, you and Fiora have been closer than ever," Reyn remarked, causing Shulk to remember what had happened between him and her.

The two began dating after creating the new world they currently live in. While Fiora's older brother was overjoyed to hear the news, Shulk was glad that he got to spend more time with his new girlfriend. Although this happened, it caused Shulk to spend less time with his other childhood friend.

"I'm sorry again, Reyn," Shulk looked up to his best friend's brown eyes. "We got to hang out at least this week."

"Yeah, man," the buff man excitedly punched his left palm with his right fist. "We should explore outside of Colony 9, just you and me."

"Definitely," they both then saw a young woman with short blonde hair who gave a bright smile to her dear friend and boyfriend. "Reyn, I'll see you around."

"Don't forget about our adventure this week."

"I wouldn't miss it for the world."

"Take care, Shulk and Fiora," Reyn departed, likely heading to the Defense Force to conduct his daily routines with Vangarre, the old square-tache.

"Heya, Shulk," Fiora walked up to her man. Shulk then planted a short kiss on her cheek. "Is Reyn okay? He didn't seem to be happy."

"You probably know why."

"Us?"

"Yeah."

"I feel bad that you're drawing him away because of me," she turned her away, feeling guilty of damaging the bond between her two childhood friends.

"Don't be," Shulk placed two of his fingers on Fiora's chin so that they are locking eyes on each other. "He understands but is bummed out that I don't get to spend time with him as much as we used to do. However, we're going on a little exploration outside of Colony 9 this week."

"Aw, that's sweet," a smile crept upon Fiora's lips. "I want you to keep up with Reyn. Don't take him off because of me. We all had known each other for our entire lives. There's a reason why you two have been friends for so long."

"I will. Thank you, Fiora," Shulk hugged his girlfriend, thanking her for being so considerate and refusing to tear down Shulk's friendship with Reyn because of them dating. "Anyways, what do you want to do?"

"Let's go to Outlook Park. I want to feel the breeze."

"Then we shall go there."

Upon reaching Outlook Park, nothing seemed to be different in terms of appearance compared to the Outlook Park that Shulk and Fiora used to go to back on Bionis. There was a bench that they used to sit together. Actually, there were multiple benches surrounding each tree. Three trees were present around the park. The one closest to the edge, facing the Colony itself, was Shulk and Fiora's special spot. While no one was present, something was off. Reaching the park, the couple noticed a strange crystal light at the center of the three trees.

"Shulk," Fiora said, expressing the same curiosity and concern as her boyfriend had. "What is that?"

"I'm not sure," he preemptively held his lady's left hand. "But let's be careful. We can't be sure that it's even safe."

"Right."

"Although," Shulk's inquisitiveness drew him closer to the odd light. "It's quite interesting to see that this particular light appears in Colony 9. It's not like any other light known here."

As he walked towards the light, Shulk tried to scan and analyze the properties of the unknown object. Fiora joined and attempted to assist Shulk. After several minutes of observation, they came away with no results.

"I can't tell anything from it," Fiora stated after assessing the light.

"Neither can I," Shulk was on the same boat as her. He then realized that gazing at it was not going to lead anywhere, so he slowly moved his hand towards the light. "The only thing we can know for sure is to-"

The light then captured Shulk and Fiora whose bodies slowly dissipated. They were gone from Colony 9, and no one knew where they have gone off to.

In another world, a large planet was filled with myriad kinds of species roaming around as natural as it could get. This particular planet also contained various regions within. Those regions comprised of a dry area with a lack of vegetation, a white sandy terrain with exotic spherical trees, and a volcanic region. This was the planet Mira. At the prime center of this new planet that humans call home, there lies a humongous Habitat Unit of the Ark Ship that was surrounded by a blissful greenery scene known as Primordia. Inside was a civilization that bred human life. That civilization was the city known as New Los Angeles. Apart from humans, other lifeforms that were indigenous or foreign to Mira had adjusted their lives in the city such as Ma-non, Nopon, and Wrothian. It was to ensure that they would survive longer.

After the Ganglion was defeated along with the discovery of the Lifehold Core, the humans who were currently alive in the form of mimeosomes had continued on with their lives, holding the painful memories of the deaths of their loved ones. New Los Angeles had remained the same for the most part. Several renovations after the invasion by the Ganglion were made in order. Other than that, everything was serene.

Then one day, a Nopon trader came to visit New Los Angeles through the East Gate. Because he had credentials and a purpose to visit the city, the guards allowed him to enter. The Nopon trader walked until he reached the BLADE Concourse area.

Meanwhile, inside the BLADE Barracks, it was home to a woman with a tan complexion and a bangless, shoulder-length white hair. She wore a red Grenada Galactic Light Wear armor as her main attire for missions and defending the city. Her day had not started yet as she was making breakfast with a young teenage girl with a short black hair cut in chin-length and bangs covering her forehead.

"What's on our agenda today, Elma?" Lin inquired to her supervisor as she finished the last bite of her meal. "Are we going to rescue some BLADEs from some dangerous indigenous lifeforms? Maybe even finding more lifeforms who can live here in New Los Angeles."

"I cannot say for sure," Elma responded calmly as she pondered about their upcoming missions for today. "Sylvalum and Cauldros have yet to be fully discovered and analyzed through the FrontierNav. We may have to recruit several experienced BLADEs to assist us with that."

"It was rough when we went there last time," the young girl recalled memories of fighting the Wrothians and invading the Ganglion's main stronghold.

"While the main threat has been eliminated, it does not mean we're safe from anything else. Many indigenous life and tyrants live among those regions, so we must be cautious of our surroundings."

"Yeah."

A sound of the double doors opened, prompting both of them to turn their heads to the direction of that sound. The person came upstairs to see Elma and Lin. That individual was a large muscular man with short blonde hair along with his thick mustache.

"Commander," Elma acknowledged Vandham's title who then nodded. "What brings you here today?"

"Normally, I'd come here to brief you two for a mission," he began but his tone revealed otherwise. "However, this is not particularly a mission I'm assigning. I'm here because of you, Elma."

"Me?" The tan woman asked to confirm that Vandham needed her. "What do you need me for, Commander?"

"Well," Vandham felt like it was strange for him to deliver such a unusual message when he could just take her and walk out instead. "There is a Nopon trader out at BLADE Concourse who wishes to meet with you."

"That's a rare occasion."

"I wonder why a Nopon trader would want to meet with you Elma," Lin commented as she tilted her head to muse over it. "At least he's not rations like Tatsu."

"I suppose so," Elma crossed her arms and looked down to think about the situation, making it harder than it should be. "Why do I get this feeling that something strange might happen?"

"Regardless," Vandham spoke up with his arms crossed. "This Nopon trader seems to be rather excited to meet you."

"Ooh, looks like you got a fan there, Elma?" Lin teased her leader.

"It's possible," Elma chuckled before standing up to exit the barracks. "Let's meet with this Nopon trader and see what he or she wants."

All three BLADE members walked out of the barracks. As soon as they exited out, a small yellow Nopon stood in front of them, startling Lin and Vandham. Elma was unfazed and believed that the creature in front of her was the one who wanted to meet with her.

"I assume you are the Nopon who wished to see me," Elma spoke to the little one in a calm tone.

"Yes, friend know Nopon trader want to see Elma," the Nopon trader responded in such deceptive yet somewhat deep tone.

"He certainly is a cute Nopon," Lin remarked with an adorable smile.

"This Nopon is more than cute. I am a Nopon Archsage who sell all kinds of merchandise," the Nopon placed its arms on the side to express confidence.

"Nopon… Archsage?" Lin expressed bewilderment and tilted her head while crossing her arms. "Are you supposed to be some wise sage?"

"It sure does have some nice ring behind it," Elma remarked, quite impressed to hear such a title.

"Enough with this chitchat," Vandham said, feeling a bit impatient that the conversation was off topic. "What reason do you want to meet with Elma in particular today?"

"I have a special simulator for all people here to improve fighting skills," the Nopon's advertisement caught the attention of Vandham mostly even though Elma and Lin were interested.

"A special simulator?" Elma tilting her head showed curiosity for the Nopon trader's deal. "I would like to know more about this simulator. How does it improve a BLADE's fighting capabilities?"

"Simulator has a real-life battlefield," the trader moved his arms to further emphasize his points. "Friends fight real enemies like Ganglion and Prones to test abilities. The simulator also has real maps of many places so accurate and perfect for training."

"Well, you certainly have piqued my interest."

"I do admit that some of our BLADEs are not the best warriors in NLA," Vandhman regretfully spoke aloud with his eyes closed. "Maybe this training simulator could toughen up some sissies here."

"You didn't have to say something that cruel when people are walking around the city who could hear us," Lin reprimanded the Commander for saying such a thing about BLADEs when it was true to an extent.

"I understand your frustration Lin," Elma said before focusing her attention to the Nopon trader. "While the simulator is very promising, I'm sure we must pay you at a high price for such a deal."

"No worry about price friend," the Nopon hopped, reacting to the fact that Elma was willing to pay so much for a simulator. "Because of friend's good deeds, the price of the simulator will cost 250,000 credits."

"Just 250,000 credits?!" Lin responded in such shock to hear such leniency of paying a simulator that cheap compared to the Heavy Skells. "Are you sure this isn't some scam?"

"Why would I deceive friend Elma?" The Nopon trader refuted by asking a question. He felt offended that Lin would challenge him because his deal was suspicious. "This is deal that friend should not dismiss. Friend Elma will be first to test simulator to see its money worth."

"Well, if you're certain about it," Lin said to Elma.

"It cannot hurt to try something new," the white-haired woman kept her optimism. "It's a deal, Nopon trader."

"Excellent, friend!" The Nopon was jumping in glee that he was able to sell the simulator to Elma. "I'm excited to see friend try the new simulator."

"I know a suitable place to go to initiate this simulator."

"Excellent, friend."

Elma, Lin, Vandham, and the Nopon Archsage head to the maintenance center to test out the battle simulator. Elma did not realize that the battle simulator was going to take her to some region not in Mira. It was going to take time for everything to properly work.

Months have passed after Malos was defeated at the hands of a young salvager who became the Driver of the Aegis. The bodies of Titans had merged together to form one large land for all civilizations to peacefully live together. As they flew on the back of Azurda, a salvager named Rex held a Core Crystal shaping like a cross. Thinking he had lost his dear Blade after sacrificing herself to save Alrest, the emerald crystal resonated once again. Soon he saw two forms of one Aegis: Pyra and Mythra appear before him. He could not help but express happiness to see that his Blade came back to him.

It was the anniversary of Rex's mentor/father figure's death. Even though it was not a year yet, Rex wanted to visit his grave at Olethro Ruins again to tell him the stories about what happened after Vandham's passing. The salvager lived his life on Azurda's back like the old times while within the area of the Argentum Trade Guild. While the home was small, Rex lived his life normally while salvaging to make money. Meanwhile, Pyra and Mythra lived at the new Leftheria. While the scenery remained unchanged, it was considered new after all the Titans merged together. Pyra assisted Corinne with cooking while Mythra mostly taught young Leftherians swordplay. It took some time to adjust life there but the Aegis was not going to give up that easily.

Rex had completed another round of salvaging with his silver cylinder. He managed to grab two treasure chests and carried them up with him. After throwing them onto Gramp's back, Rex took off his salvaging helmet to breathe some fresh air again.

"Ah," he sighed happily. "I miss salvaging when it's just salvaging."

"You've been salvaging exponentially more than you used to do before meeting with the Aegis," the old Titan said as his head turned to face his son.

"Well, the difference is that I'm salvaging because I love it and make a profit," the boy said as he opened the first chest. "When I was trying to take Pyra to Elysium, it felt more like a job to salvage to fulfill requests for people. Don't me wrong, Gramps. I like helping people get things by salvaging, but I don't want something that I love to be unsatisfying after a while."

"Oh, I understand, Rex," Gramps smiled feeling sympathy for Rex. "Did you find anything interesting?"

"Just some gold, dark gray springs, and fancy bolts," the Aegis's Driver seemed disappointed to see the same results again from salvaging. "Looks like I've gotten pretty much everything here."

"Considering the fact that you've salvaged so much, it makes sense."

"Yeah."

Rex opened the second chest, only to find more common mechanical items and gold. Realizing that he had been salvaging since the early morning, Rex decided to take a break and buy something to eat. He purchased two Tasty Kordeth Samod, two Lightly Fried Rice, and two drinks for him and Gramps to eat together. Rex brought Gramps his meal for today who graciously thanked him for being so kind. As they ate together, Gramps noticed today was a particular day just months after a certain father figure had been killed by Malos.

"Rex," the Titan initiated the conversation. "It's been months ever since Vandham's death."

"It has, hasn't it?" He rhetorically replied, thinking about the times he shared with the Urayan. Suppressing the memory of him putting himself at death to save Rex and the Aegis was difficult to do. "I wish he was alive to see how much I've grown."

"Rex, I know that Vandham would be very proud of how far you've come. You fought your own war. That would suffice how much he is proud of you."

"Thanks, Gramps," because the conversation pertained to Vandham, Rex wanted to visit him and invite certain people to join along. "Gramps?"

"What is it, Rex?"

"Let's get Nia, Tora, Poppi, Mòrag, Brighid, Zeke, Pandoria, Pyra, and Mythra to visit Vandham."

"I'm certain they won't mind if we visit their lands to visit a fallen soldier."

"It's been awhile since I've seen them."

"This is also a good opportunity to catch up with your friends."

First, Rex and Gramps traveled to Torigoth in Gormott. The salvager walked into the civilization. He knew the first place he would go to: Tora's house. At the intersection of the market, Rex took a left turn and followed a path that led to the secret entrance of the Nopon's abode. When he opened the door, the Nopon knew at that moment someone he knew came to see him.

"Ah," Tora hopped in glee to see his friend again. "Rex-Rex come to visit Tora?!"

"It's good to see you, Tora," Rex said with a smile before seeing Poppi Alpha next to Tora. "Hello, Poppi. You look the same as ever."

"Greetings, Master Rex," the artificial Blade responded with a small tone of content from Poppi. "Poppi is happy to see Master Rex visit Masterpon and Poppi."

"Well, you've certainly shown up without telling us," a female Gormotti with a Welsh-accent walked from the side and spoke in a sarcastic tone. Behind her was a tiger-like creature who was her Blade.

"Nia! Dromarch!" Rex walked up to them and gave them a hug. "I'm glad you guys are here as well. I was also looking for you two."

"Did you really now?"

"Certainly, my lady and I have arrived at Tora's abode at the right time today. Greetings, Master Rex," Dromarch bowed his head to remark his greetings.

"What Rex-Rex doing here in Torigoth?" Tora asked since the Aegis's Driver unexpectedly arrived in Gormott.

"Well," he started before pulling back. "I wanted to visit Vandham's grave since it's been exactly 6 months since he died. Before I go to Uraya, I was planning on asking you guys, Mòrag, Zeke, Pyra and Mythra to join along, including Brighid and Pandoria."

"Tora would delightfully join with Rex-Rex. Tora hasn't seen Rex-Rex in so long, so Tora want to know what Rex-Rex do now."

"Well, same for me as well," Nia agreed before crossing her arms. "You and I got some catching up to do."

"Are we leaving soon Master Rex?" Dromarch asked the salvager.

"It's not soon, rather it is now," he sheepishly responded.

"Don't be embarrassed by your demand," the tiger continued. "We are not occupied with anything, so we will happily come along with you."

"Awesome," Rex smiled. "Let's get the rest before heading to Uraya."

Rex and his friends arrived at Mor Ardain where the Titan's life was near its end. Although the Titans merged together, not many know if the Mor Ardain Titan will sink. Little did Rex know, his luck was getting better since the two people he wanted to visit happen to be at the capital together. He arrived at the Anangham #2 Dock as Gramps stayed behind. Nia messaged the Special Inquisitor that they will arrive at the dock so they can expect their arrival. The salvager was glad to see that more people were at places he wanted to visit.

"Mòrag! Zeke! Brighid! Pandoria!" Rex shouted as he walked towards him contently. "It's been so long since I've seen you guys!"

"It's gracious of you to visit Mor Ardain for some time now," Mòrag calmly replied as she stood erect. "There's much to discuss our lives."

"Well if it's isn't my little chum," the Tantalese Prince excitedly said as he petted Rex's hair. "How has it been, chum?"

"I've been well," the salvager replied. "Just salvaging to find treasure and money for everyone at Fonsett."

"Such a pure heart," Zeke responded, prompting a sheepish chuckle from Rex. "Anyways, what's your reason for coming to Mor Ardain?"

"Well, I was going to visit Vandham's grave in Uraya but I wanted to invite you guys to come along."

"You're a generous and kind individual, Rex," the Jewel of the Empire added.

"I suppose we can all accompany you to visit Vandham's grave," the Special Inquisitor answered, prompting Rex to smile.

"As long as I get to see my chum, it's fine with the Zekenator," the Tantalese Prince said as Pandoria mimicked the expressions her prince was making. "Hold on, what about Pyra and Mythra? Aren't they coming?"

"They are," Rex knew that he was not going to leave behind the Aegis. "We're getting them after stopping by here."

"Sounds good with me."

"Let us proceed then," Mòrag said as she walked to Azurda to prepare for their ride to Leftheria and then Uraya.

Almost all of the team had reunited with the exception of the Aegis. On their way to Uraya, everyone had exchanged what life had been like after defeating Malos. To generalize, life had been well. Tora and Nia continued life in Gormott. Mòrag resumed her duties to relay messages to other regions to unite and promote safety amongst them. Zeke was also on the same page with the Special Inquisitor since he was the most qualified among all other Tantalese. Once they arrived in Leftheria, Rex had met with Pyra and Mythra once again.

"Rex!" Pyra exclaimed as she gave her Driver a hug after not seeing each other for some time.

"At least you're fine, Rex," Mythra casually said but also was glad to see her Driver for the first time in some time. She then looked to see that he brought guests. "What do you know? You brought the entire team back together again."

"So you two are living here all this time?" Nia inquired, a bit surprised to see Pyra and Mythra especially here in Fonsett.

"Yes," Pyra answered. "I've been helping with Corinne with cooking and feeding the village."

"I've been teaching these little kids about defending themselves and sharing stories of the Aegis's Driver," Mythra added before turning her head away. "Say what you will about me, but I'm enjoying it."

"Surely you two have been adjusting to life in Fonsett Village well," Mòrag commented after assessing their explanations.

"Yes, we have," the red Blade confirmed with a smile. "Everything is peaceful and safe, just how I like it."

"As long as Malos and Amalthus stay dead," the blonde continued. "Everyone will live happily."

"We witnessed their deaths," Brighid stated. "I'm sure they will never return to Alrest to devastate our world again."

"Well we aren't here to talk about that," Nia cut to the chase and put Rex on the spotlight. "Rex wants to say something to you two."

"What is on your mind, Rex?" Pyra was curious to know what Rex's current thoughts were.

"I wanted to visit Vandham's grave in Uraya," Rex began, prompting a sad expression from the Aegis. "Before we go, I invited everyone to come along. Pyra, Mythra, care to join along?"

"Of course," Pyra instantly knew what to answer the minute Rex asked her to tag along. "I want to spend some time with you."

"Same here," Mythra added. "Tell me some cool things you've done after defeating Malos."

"I got some stories to tell."

The entire team had finally reassembled. They were on course to Uraya to visit Vandham's grave. Gramps flew above Uraya and descended onto the Holy Gate of Fontana which led to Olethro Ruins. That was the drop off for the heroes. Rex then told Gramps that they would meet him at the Fonsa Myma Port, which Azurda was fine with. Gramps would get some rest time while he was occupied there. As they walked up the many stairs, Zeke commented to Rex that Gramps should have flown to the Olethro Playhouse instead of the Holy Gate of Fontana. Rex agreed with Zeke's point but regardless they were almost there.

After walking all the steps, they've only had the passageway to walk though before Vandham's grave. However, something else had caught their eyes. The hallway connecting between the playhouse and the ruins, a strange crystal light was floating on their left side.

"Meh-meh?" Tora asked in a confused tone as he was taken back by the peculiar light.

"Masterpon, is something wrong?" Poppi responded to Tora.

"Tora see unfamiliar object, right over there," he pointed at the floating peculiar light.

"D'you think that's the mysterious light Zuo mentioned?" Rex asked the Nopon. Before arriving at the Olethro Playhouse, Rex made a quick stop at the Garfont Village to see Zuo. He explained to Rex about a strange light he encountered and warned the team to be cautious.

"It wasn't here before, that's for sure," Pyra added after remembering their last encounter at the Olethro Playhouse.

"No, I imagine I'd have remembered," Nia wiped her nose with her right arm before placing both arms on her sides.

"But what is it? Tora-senses are tingling," Tora's comment caused Zeke to tilt his head in confusion.

"If you're so curious, Tora, why don't you go check it out?" The Gormotti girl asked the Nopon.

"Meh-meh?!" Masterpon was shocked to hear such a suggestion by Nia. "N-no, Tora believe discretion is better part of valor. Curiosity kills more Nopon than Aligo. Maybe Rex-Rex check?"

"Me again? Blah…" Rex knew that Tora would direct the suggestion to him, which irritated him a bit. "Though I'd be lying if I said I wasn't curious myself. Just like salvaging, if you don't take chances, you'll never make it to the good stuff!"

The entire team surrounded the strange light to observe Rex.

"Right on, Rex!" Nia was also curious to see what abilities the strange light had. "Go do your thing."

"On it!" He gladly responded.

"Just please don't do anything reckless," Pyra said as she was concerned for her Driver's well-being.

"No worries!" Rex made sure to be careful so he would not be injured if anything were to happen to him. He then proceeded to touch the peculiar crystal light.

The next thing everyone knew, their entire physical bodies began dissipating. They were panicking since they did not know what was happening to them or how to stop it. Then, their bodies disappeared from the ruins without a trace.

They were no longer in Alrest anymore.

This was the beginning of a new adventure.