Sonic/Grand Order: Battle Against The Outer Gods

SIN (Prologue)


*Sonic's World, Europe At A UnDiscloded Location*

"*Piloting The Tornado* According to the Corrdniates given by this mysterious person. We should arrive in a couple of minutes." Tails said

"Try to fly at a low altitude. These clouds block our view from seeing where we're heading." Sonic replied

"You got it, Sonic! Flying at a lower altitude! *Flies The Tornado Down, Passing Through The Clouds* This should be good for us. *Notices The Miles Electric Ringing* Sonic, I'm getting a call from Miles Electric! *Answers The Incoming Call* Hello? Is this the person we're looking for?" Tails ask

"*A Female Voice Can Be Heard* That is correct! Do you read me loud and clear?" The Female Voice asks

"I can hear you loud and clear! Also, this is Tails, and I'm here with Sonic The Hedgehog!" Tails replied

"So Sonic is with you as well!? I heard a lot about this famous Hedgehog back in my world before! I never knew the Hedgehog existed! Oh my god, I can't wait to meet him!" The Female Voice Said In Excitement

"*Hearing The Conversation While Rubbing Back* Even in Mash's world, it's great to see that my name somewhat lives on," Sonic commented.

"Okay, I need to calm down and do some actual business. Wait, I see something in the sky. Is that a plane? Hey, I know an Aircraft! Glad that hacking the emergency signal worked by using parts of a robot. My genius will never be overmatched! Anyway, We'll see you two! We're hiding in an Abandon military headquarters inside a Mountain!" The Female Voice said

"An abandoned military headquarters inside a mountain? Wait, Sonic, isn't this the main Headquarters of G.U.N.? What does she mean about the place being abandoned? What happened to it?" Tails confuse

"I don't know either, but if I have to guess. It seemed like Eggman found the place and invaded it when everyone least expected him—forcing everyone to move someplace else. Eggman seemed to know what he was doing before he began his rampage around the Islands. But Shadow and Rouge worked for them. How can they be easily pushed back like that? Could it be that someone helped Eggman successfully raid this place?" Sonic replied

"Wow, you two know your history with this secret headquarters, but don't worry, I decided to give the place a little makeup from before. Now, proceed on your current course, and make sure you land in a private place to prevent being noticed. Also, My name is Sion. Sion Eltnam Sokaris and I, a Spiritron hacker from another world. Being the new leader of this abandoned headquarters, I must continue the work from those previously here." Sion said


*Down At The Ground*

Soon enough, Sonic and Tails arrive at the Mountain where the Headquarters is at as. Sonic contacts Chaldea with the Chaldea Communicator about this discovery.

"Nice job locating the secret headquarters, Sonic! To think that a military organization once used this location before an attack is quite surprising." Da Vinci said

"I wish I were there with you, Senpai, but I needed to return to do some work here. Don't worry. Once I'm finished with everything. I'll be sure to return and continue with the mission." Mash promised

"And this time, I'll be tagging along as well. So don't expect you two to do the rest alone." Olga said

"A new Master tagging along as well. Heh, I can't see what you have to offer Olga. Just make sure not to get left behind with my speed." Sonic relied on

"Sonic, the person that told us to find her. I don't see her around... Where is she?" Tails looking around

"*Talking through The Miles Electric* That's for you to discover! I'll start by opening a secret passageway into this Headquarters."

Sonic and Tails soon notice a boulder rolling aside and revealing an opening to some passageway into the headquarters.

"*Whistles* I didn't expect G.U.N. to have a secret passageway into their base," Sonic commented.

"Oh, that wasn't there when I first arrived here. I decided to add that while reconstructing the inside into a new look. You may be wondering what the heck you are entering into. But here's something only you know, Sonic. Think of it as Chaldea if it were in your world. Only smaller than its original."

"Smaller Chaldea? Wait, hold on, don't tell me that. This person also originated from our world as well. Senpai, what's going on!" Mash suprise

"Beats me, but we won't figure anything out if we don't start moving. Come on, Tails, let's roll!" Sonic said


*Inside The Abandon G.U.N. Headquarters*

After walking down a line of staircases from the entrance where they came from, Sonic and Tails arrive at a room filled with computers and machines that G.U.N. headquarters owned before Eggman and his nasty nicks attacked it.

"*Looking Around The Room* Look's like we found the jackpot," Sonic commented.

"Wow... these are some high-tech machines G.U.N. owned before. Maybe I could use these as references for my future inventions." Tails said

"Glad I'm not the only one suprise by the amount of technology this base had in stock for me. And the best part is that they weren't damaged during the previous attack you mentioned."

Sonic turns and notices a woman with long purple twintails, black/green hat, and glasses. And she was wearing a white shirt with a green tie, covered in a purple blazer and white skirt.

"*Notices Sonic And Eyes Widen* You must be Sonic The Hedgehog, right?! Yep, I have heard quite a lot about you since I was a child! But I never thought one day I would meet the Blue Blur in person! Can I get an autograph?!"

"Hehe, only if you have something to write with. I'll have no problem signing an autograph for you." Sonic replied

"Wait, I almost forgot my manners introducing myself. Let me start over. I am Sion Eltnam Sokaris, an alchemist who is here from a different world after an incident that involved time-space colliding with another world. In this case, yours. I would treat humans as my workers with a contract that I force them to sign. But knowing that you two aren't humans, I'll let you off the hook this time. *Winks At Both Of Them* Anyway, I'll explain a little about what's happening." Sion said

"That will be appreciated, Sion, right? I'm more surprised that you organized from Chaldea's world. Also, this is Olga Marie Amusipeher talking. Director of Chaldea as we speak." Olga said

"Olga Marie? Yeah, I heard about you as well. Nice to meet you as well. I see you are communicating through that Wrist machine Sonic has in hand. It's pretty fascinating. Also, aren't there two others next to you? The names that go by Mash Kyrielght and Leonardo Da Vinci? The caster one?" Sion said

"Y-Yeah, that's correct. Hello, Sion. Nice to meet you. I hope we can become partners in the future!" Mash said

"Nice to see another genius helping Sonic and his friend over there. You three would be great friends soon enough." Da Vinci said

"With a famous Hedgehog like Sonic in the flesh here. Who wouldn't want to be Sonic's friend? I'm also one of the lucky ones to be as well. Anyway, Sonic, I noticed that you are a Master yourself. Tell me, how does sit feel about being one? Do you have any Servants?" Sion asks

"It felt weird at first, but I eventually got used to being a Master. I may not know about being a Master, but it's been going well in the end. And yes, I have Servants as well. They aren't here with me right now. But let's get to the important part. You knew the Islands would happen before they appeared?" Sonic commented

"That's correct! That doctor has a lot of nerve to bring these mini-worlds from my world into your world. But don't worry, I'll be one of your helpers getting through the rest of the Islands—good job taking down the first two as well. The Mages Association and Atlas Institute don't know I'm here. All reports of you traveling through each Singularity weren't recorded into Tri-Hermes back home either. So you get out scot-free from those guys." Sion said

"So this is Sonic you keep talking about? At least he isn't a human, so I'll give him more respect to him than humans." A Voice said

"*Notices Someone Behind Sion* Ummm... Who are you? Never seen anyone like you before." Sonic questioned

"I'm a Servant. You know, something you should know by now?"

"A Servant? Does that mean you were also one of many Servants transported to Sonic's world? That's the only explanation I can think of." Olga questioned

"That is not the case. I saw Chaldea's mechanism, devised my interpretation, and managed to call one Servant. There were a ton of Servants that I worked to see that were already under contract with Sonic. Someone who could keep an eye on me and ensure I didn't break it was necessary. I could spend all day creating plans on my own, but what good would they be if no one ever built them?" Sion replied

"I'm still in awe that you were able to call a Heroic Spirit outside of Chaldea," Mash said

"Sonic, you may not be a human. But I can't give you my True Name yet. If you have any names for me, I don't mind being called by it you. But for now, I need to check on the plane you two arrived at. I can sense some unique mechanisms it has to offer." The Servant said

"Identify them as Captain. It will be easier to understand. I'm sure Captain will reveal himself once he starts to trust you, Sonic. Anyway, there is only Captain and me here at the moment. I can assure you that no one else is around, so feel free to stay here as much as you like." Sion said

"Hey, Sonic, that gives an idea. How about we move the Teleporter from my workshop to this Headquarters. That way, you and Sion can travel to Chaldea faster and safer." Tails said

"I was just thinking about that, Tails. That will be a good idea! We can quickly and easily bring Mash, Da Vinci, and Olga into my world!" Sonic replied

"Hey, not a bad idea, Tails. That will be easier for us to travel from one place to another without having to travel by plane every time we teleport to your world." Mash said

"You created a portal to Chaldea back in my world? I foresaw the great intelligence you have, Tails." Sion commented

"Thanks for the compliments, Sion; I appreciate it. Alright, I'll be on my way to get the Teleporter from my workshop here for you two." Tails said

"Before you go, I'll like to ask Captain to travel with us to bring this portal for us. If that's alright with you." Sion said

"Sure, I'll go with Tails. He does have the brains when it comes to building. I'll like to see what he created." Captain replied

"Alright then, that settles it then. Will be right back with the Teleporter!" Tails said


*Later*

After Tails and Captain left to retrieve the Teleporter, only Sonic and Sion were left inside the headquarters. Sion took Sonic into a room similar to Chaldea's Command Room. Sonic was surprised to see a familiar place in his world rather than Mash.

"*Looking Around* Is this supposed to be Chaldea's Command Room?" Sonic questioned

"I can understand why you would believe that. But it's a little more complicated when it comes to that. Chaldea's Command Room was remodeled after a different one in the Wandering Sea in my world. You see, thanks to your world's technology. More advanced than ours. I copied the Wandering Sea's style and assembled this masterpiece about one month since I first discovered this military base. And just like

"Wandering Sea? What the hell is that place? Is the Mages Association hiding something from me? Why wasn't I aware of this?!" Olga said

"I want to tell you something, Chaldean leader. Olga Marie Amusiphere. Please allow me to explain everything. Sonic, you don't have to worry, so don't listen to what I'm saying. Okay, *empties the throat and talks in a severe matter* I know Chaldea better than you. First, this whole recreated thing is called Spiritron Compute Engine Trismegistus II. The Pseudo-Spitron computing machine is the heart of the Tri-Hermes Atlas Institute. My father, then head of Atlas, had to create a sister unit to Tri-Hermes, Trismegistus, before handing over the development to me. The most successful was Paper Moon-based null sails as a method of sending people into the past - well, into the Singularity, anyway... Your father Marisbury had another idea for a more reliable way. His proposal was a process he called teleportation, which involved sending physical bodies as Spiritrons. This was more predictive because it was closer to the Atlas Institute's forecast. Not exactly the most cautious proposition, but a magician like him is willing to reveal the secret art of his speech collections. If it were found out that the Amusiphere family, one of the twelve lords of the bell tower, shared technology with Atlas, that would mean a war with the other lords that would have ended the Amusiphere. Your father understood the gravity of the dangers and decided to act anyway. So, the Atlas Institute accepted Chaldea's request, respecting hir concerns. Of course, none of the other lords ever realized what Marisbury had done, so nothing came of it. Soon the Chaldean Security Organization began to do what it set out to do. I'm sure you all know more about the real crimes of Chaldea than I do. We were the ones who gave you the tools to do things." Sion explained

"I hated my father! But he knew what he was doing, and I stand by it! I always hated the Mages Association! They never treated me with respect! They only want Chaldea, not for what it's currently doing. But to use it to rub it into my face, telling me that I'm a worthless Director who couldn't do shit and get it back from my hold. And I'm done with hearing about them! The only people I would instead put my time into helping with are Sonic, Mash, Da Vinci, and all the Servants here in Chaldea! They all care for me more than the Association! That is why I am still here to this day!" Olga shouted

"Oh, I understand that very clearly. I understood everything about what you said. We all trust Sonic here, and so do I. That is one reason to keep Sonic a secret from the Mages' Association. I wouldn't mind breaking that rule since we currently aren't in that world. Hey, I would go as far as going behind my good-for-nothing father and traveling to different worlds just to help out with someone like Sonic. I'm already having more fun here rather than I ever was before. And what is happening right now, with those Islands floating in the sky that originated from our world? It wouldn't hurt to add one more member to the team. I trust you, Sonic. If that Docter, known as Eggman, was why our worlds collided. Then we also have to fight as well to protect our planet as well. You are a hedgehog who doesn't take the word "Defeat" for an answer. I know you aren't the type to give up. You fought bigger and more powerful beings before. Heck, not even the Mages Association wouldn't be able to down the Monsters and gods you fought in the past. That's how special you are to not only your world but to ours as well. You're the savior of our world. That is why I recreated the Wondering Sea here inside this base so I can help you here. No questions. Just facts. I put my complete trust in your hands, Sonic. Don't make Eggman destroy our home as well." Sion said

"*Looks At Sion And Gives Her A Thumbs Up* Sion and everyone else here. I promise to repair both mine and our worlds from colliding. No matter what's stopping us from going further, there will always be a way around it. You can trust someone like me. I'm not giving up any time soon. Together, all of this mess will be solved once and for all. Trust me." Sonic replied

"Everyone but the mages here. They honestly don't care about human civilization in our world. And certainly from a different world. But they are the least of your concerns, as far I can tell. But either way, I can't wait to join forces with Chaldea. Especially you, Sonic The Hedgehog! "Cause we're Sonic Heroes!" Sion cheered.


*Two Days Later*

Thanks to Mobius' advanced technology, Captain and the group finally fixed up their previous own G.U.N. headquarters. They created what they claim was a remodeled version of this Wandering Sea and how it looked inside. With a new kitchen, computer rooms, and bedrooms for Sion, Captain, and others. Not only that, but the Teleporter was finally relocated to the new base and got an extensive upgrade, as it was quicker and easier to teleport from both worlds without much need for the Chaos Emeralds. Sonic was impressed by the unique design of the place that Captain managed to build for himself and Sion—knowing that both of them had a place to work and rest. Only a fraction of its powers.

"How do you like our new home, Sonic? It's based on the design of Chaldea, as previously mentioned." Sion asks

"It's pretty nice, to be honest. I'm mostly glad you and Captain have a place to rest. Don't worry about Tails and me. We will be fine at different places besides this place. Will just arrive here when you call us for anything major." Sonic replied

"I thought you'll say that. And I'm glad since we only made limited rooms for Captain and me here. So I was worried that you and Tails would like a couple of rooms for yourself. Guess I worry too much, huh? Also, we have some special guests with me here." Sion said

"*Appears* Hello again, Senpai. It's to see you once again." Mash said

"Mash! Boy, am I glad to see you once again. Sorry for the long wait. Tails and Captain managed to upgrade the Teleporter for all of us here. Now it'll be easier and quicker to get from one world to another." Sonic replied

"So this is how your world feels, Sonic. It feels much more peaceful than what Our world has to offer. None of that Magecraft and gigs. Just an average place to live peacefully." Da Vinci said

"It does feel nice, doesn't it? I can practically work more peacefully now without the need of the Mages' Associations always on our backs and stuff." Olga commented

"Olga! Da Vinci! You're here! Boy, am I glad to see you two here in my world. Feel free to stay as much as you like. especially during our journey through each Island." Sonic said

"Looks like the gang is all here. Sonic, Mash, Da Vinci, Director Olga Marie, and Sion work together to solve one issue. Talk about a massive crossover. But anyway, everything is back online and has been cleaned by the previous owners. I am very excited to have friendships with real ones and feelings! Together, nothing can separate us." Sion said

"That's what I like to hear, Sion! Together, nothing will get in our way. Now there are three Masters in the same room!" Sonic replied

"Yeah, I noticed Olga was also a Master as well. Even I was suprise about that as well. No offense, Director Of Chaldea. Anyway, Shall we get down to business? Care to explain everything that happened here? You know, how everything started up to this point?" Sion asks

"Oh, you know, the typical Eggman things. Plan an attack from world domination. Steal Master Emerald from its place and take it to the lab with the help of some lady. Mash, a coupe of Servants, I broke into the lab. An accident happens, and soon enough, these Islands appear out of nowhere as soon as Master Emerald realizes its powers." Sonic explaining

"You know how much that narrows it down for her, Sonic? It looks like she lost track halfway through your explanation." Olga said

"No, no, I pretty much understood everything. All thanks to your buddy Tails for giving me tons of information. The day you returned to your world, Sonic. Dr. Eggman realized that you had reappeared and had someone take Master Emerald away from its position on Angel Island. Once you confronted Eggman, this mysterious lady decided to take advantage of Emerald's power and, using her thoughts, turned them into reality, bringing these unknown worlds to your own in the shape of islands. Now only that, but our worlds, theoretically speaking, collided with one another and managed to break time in space for both our worlds. You were causing our world's times to be disrupted. Based on reports from Da Vinci and the Director, our world has been experiencing strange phenomena that can't be described ever since this incident occurred in your world. No one can't explain why all of this is happening. But only Chaldea knows the truth. Now with the Islands, the first one you traveled was the Russian Island, where you defeated Ivan the Terrible and cut down the Tree of Emptiness. The Island was destroyed and soon vanished after that. You then traveled to the Scandinavian Island, where you went and took down Scathach-Skadi. The king of the Scandinavian Lostbelt... and were able to cut down its Tree of Emptiness, Sombrero. And now, after that, we are here. Did I get all that right?" Sion explained

"Everything was said spot on. Excellent job." Da Vinci said

"You have now seen two islands and personally witnessed their distinctions from human history. They are dead-end timelines that human history has cut away as it has considered them unworthy of continuing. I decided to create criteria we might use to rank and contrast the Islands to see which one causes the most harm between our worlds. I provided initial depth rankings for each of the seven Islands. As you can see, there are three Islands in this world Europe, two in Asia, one in South America, and one in the middle of the Atlantic. Atlantic, you say, will that one is the most deadly. That is the one spreading its Tree of Emptiness branches throughout Earth's atmosphere... And I believe this is where Eggman and Master Emerald is located." Sion said

"Then why don't we just head straight there right now and deal with Eggman quickly? I mean, with Sonic on our side. Taking down Eggman would be easy." Olga said

"The storm walls around the islands in China and India are not growing, in contrast to those in Russia and Scandinavia, so there shouldn't be any danger in leaving them alone for a long. Trismegistus predicts a high likelihood that South American and British Islands will self-destruct if left to their own devices. The British Island depth is something I have not been able to gauge accurately, but that is simply another indication that it is not a good match for our planet. I have been unable to confirm what is going on there. Still, compared to Human History and the Foundation of Humanity, humanity is pretty clear on the verge of collapse. So it is reasonable to assume that humanity on British Island will go extinct within months rather than years."

"I see, so we will eventually have to go to England to see what's different about this place. Hehe, I can't wait for that day to come." Sonic said

"So to just things in short. We're heading towards the Atlantic. To that end, we will be making some extensive modifications to the plane your buddy Tails gave us! And by we, I mean Da Vinci, And Director Olga, with me assisting! And thanks to this world's technology, it'll only take a few days to finish. So I suggest you all just go on and do whatever you need to before heading to the Atlantic." Sion said

"You know, I have a different option. How about we head to the Island in Asia? I rather get that out of the way before we could settle with Eggman in the Atlantic." Sonic said

"Oh, that was a sudden change of pace. You rather get the others done before meeting Eggman on the Atlantic island." Sion commented

"I have been doing that since I was a little Hedgehog! Believe me, when I say this, it'll be worth getting the other Islands cleared before heading to the Atlantic one." Sonic said

"Master is correct. We should take care of the other islands before reaching the Atlantic one. I'll stand with his plan." Mash said

"So do I!" Da Vinci said

"Count me in," Olga said

"Well, I guess I can't disagree with that. Alright then, change of plan; instead of heading straight to the Atlantic island. We will make our way to China and deal with that Island. Sounds good? Alright then. Will contact you when we are set and ready to go." Sion replied

"Don't rush us like how you do every so often. We don't need any problems flying this new plane." Olga said

"I think you should summon a Servant fit for this adventure, Sonic. Someone that fits perfectly for our next journey. I say, Nezha." Da Vinci said

"Nezha, huh? Alright then, I'll talk to her soon about what to expect. But in the meantime, we will just do what we need." Sonic replied

"Alright then, I'll be on my way then. Mash, care to tag along with me in the meantime?" Sonic asks

"Sure thing, Senpai. I want to explore and learn more about your world. I wasn't able to experience it well the first time." Mash replied

"Alright then, let's get going! We will return here to prepare ourselves to head to the Island!" Sonic said


To Be Continued...


"Next Time: Island 3: SIN."