Disclaimer : I don't own Dragon Ball franchise or Fate Franchise.

Pairing : Goku x harem ( maybe )

Tournament of Power, 1 minutes left before the end.

In the destroyed platform of the Tournament of Power, we could see two figures standing few meters away from each other, one of them is a tall, very muscular humanoid with an appearance similar to the folkloric aliens known as the Greys. He has gray skin, big round black eyes with enlarged pupils, and nostrils in place of a full nose. He wears the uniform consisting of a red, spandex-like suit with black sections around the collar and legs, white gloves, and white boots. This individual is known as Jiren the Gray, the strongest member of the Pride Troopers and also the man who has surpassed the power of the God of Destruction in Universe 11, fighting for the survival of his Universe and also obtain the Super Dragon Balls so he can wish something to answer his memo of 'seeking whats beyond strength'.

In the other end of the battlefield we could see a person with spiky silver hair, a whitish godly aura surrounding his body, deep silver eyes, his orange and blue Gi completely tattered as he was exposing his upper body, fortunately, the lower part of his Gi was somewhat intact. This individual was known as Son Goku or Kakarotto. A Saiyan from Universe 7 who was raised on Planet Earth, fighting also for the survival of his Universe and obtain the Super Dragon Balls so he can accomplish the desires of Vegeta who was knocked out by Jiren two minutes ago and Android 17 who self-sacrifice himself so they can recover some of their stamina.

At the beginning of the tournament, the Saiyan God of Universe 7 was excited to fight Jiren since he could tell he is the strongest in this platform. However, in their first fight, it didn't go so well for Goku as he has used Super Saiyan Blue with Kaio-Ken X20 to even go 'toe-to-toe' against the Pride Trooper who just defeated him with ease. Then he had to use the Spirit Bomb with all the energy of Universe 7, except for Vegeta and the Gods, against Jiren who stopped it with a stare as Goku was using all his power but it didn't work as it exploded in a Black hole-like explosion and consumed him making everyone think he died.

Before he could be eliminated he resurfaces to the platform with a new power. This power is known as Ultra Instinct, the ability to evade any attacks from the opponent no matter how fast or stronger it is. He fought Jiren in this form and he even landed a good hit on him, however, his transformation ran out thanks to his stamina and was defeated. If it wasn't for Frieza giving him energy, he wouldn't last long in the Tournament

As the minutes went by he manages to recover his stamina so he can be ready for Jiren, but he had to handle a couple battles like Kale and Caulifla, two prodigy Saiyans from Universe 6 who use the Potara Fusion to form Kefla who pushed him to his limit once again and re-enter to Ultra Instinct to knock her out of the platform. Then there was Aniraza from Universe 3 who was about to blow off the platform but thanks to his friends Super Saiyan Blue Vegeta, Mystic Form Gohan, Android 17 and Golden Frieza defeated the opponent.

In the final 7 minutes were the most difficult as the three Pride Troopers, Dyspo, Toppo, and Jiren were no pushover against the Z-warriors. Gohan had to sacrifice himself with Dyspo as Frieza push them out of the platform, Toppo who became a God of Destruction for a brief moment was eliminated by Vegeta in his Ultra Super Saiyan Blue form that pushes him to his limit, thus leaving Jiren by himself against two Saiyan Gods and an Android.

Even with the full efforts of Goku, Vegeta, Android 17 and even Frieza who was knocked out by Toppo and then again by Jiren with a stare they weren't making much effort to defeat him. Thus leaving Goku by himself and an unconscious Frieza still in the platform, even with the small boost he received from Vegeta he was still no match for the Pride Trooper as he was about to be knocked out he remembers that everyone's wishes and desire to survive were entrusted to him, he couldn't fail them! With this in mind, he enters to Ultra Instinct once again.

The battle was fierce and fast, the normal spectators couldn't keep up with their speed, hell even the Gods were having a difficult time in keeping up with these two monsters. The Saiyan God thought that they were now equal and was winning ground as he was about to launch a Kamehameha in the same fashion as Kefla, however, it all changed as Jiren uses his maximum power to reflect his killer attack and almost knocks him out. But he wasn't going to give up not yet as he tapped into more power in his Ultra Instinct and notice that his hair color changed into a light silver color similar to the Angels but the difference was that he could now attack without thinking. He heard Whis calling this Perfected Ultra Instinct.

This now brings us here to the final two minutes of the Tournament of Power as Goku and Jiren were having a stare down meanwhile in the stands were their friends/allies and the Gods were chatting about the sudden change of events with the Saiyan God

"Who would have thought that Goku could become this powerful in the lapse of the Tournament" spoke up Tien as his gaze was mainly focused on the battlefield, he would never think that the guy he fought in the 22nd Tenkaichi Budokai would become on par with the Gods of Destruction.

"That's my father for you, always surpassing himself when the odds are against him" responded Gohan with a smile on his face, he always knew that his father always defies the impossible and always overcomes his limit and this is no different. Despite having flaws when it comes to family responsibilities, his father is an inspiration to overcome anything and he promised to him that he will continue his training to protect his family.

"Kakarotto.." murmured to himself the Prince of all Saiyans with his arms crossed, all his wishes and desires were now in the hands of his rival/friend. As much as he hated it he knows that Kakarotto is the only chance of them to survive and the rest of Universe 7 depended on his shoulders. "Good luck."

Meanwhile back in the battlefield, the Saiyan God managed to hear the comments that his team had given about him and a small smile formed on his face, everyone trusted him to come through with a victory and, as much as he didn't want more Universes to be erased, his family, friends and the survival of his Universe was the top priority.

"Son Goku!" called out his opponent, Jiren, who was coated in four layers of Ki as he got into his fighting stance "It's time to end this once it for all"

"You're right, We have been dragging this battle on for too long" responded back the silver-eyed Saiyan as he also got into battle position "Get ready Jiren, Because I will come with everything I got!"

At the mention of that both of them disappeared at beyond light-speed from where they were, in the next second they collided their fist with such force that it shook the entire World of Void, both of them didn't say a thing as they once again disappeared from everyone's view and only shockwaves could be seen around the destroyed platform.

As they were in mid-air and slowly falling down to the arena, the Pride Jiren started to shoot multiple Ki blast at the Goku who dodged all of them instantly and replies back with a simple Ki wave that has the same size of the Final Flash and the potency of it. However, since Jiren is using his full power he stops it with one hand and sends it flying away to the endless skies of the World of Void.

Jiren thought at first that Goku's new look was only a power boost in his dodging but he didn't take in notice that Goku appeared in front of him at teleportation-speeds and started to give a barrage of punches and kicks flawlessly that not even the Gods of Destructions could keep up.

"HAAAAA!" Goku roared as he delivered a powerful punch to Jiren's left arm, completely breaking and shattering its insides. Jiren screamed in pain as he was push back and crashed through the floating debris. The tournament was near its end and the battle between Jiren and Mastered Ultra Instinct Goku hasn't stopped, the intensity in the fight was strong that gods watching were scared out of their life.

" Goku-san! Keep it up!" cheered the Supreme Kai of Universe 7 as he could see some members of his team smiling at this and he could see the Gods of Universe 11 completely annoyed at this turn of event.

"Come on Jiren! Stand up!" yelled Vermout in desperation towards Jiren who stared to stand up slowly from those fierce attack .

As Jiren slowly stood back up, he stared at Goku with blazing fury in his eyes. 'How can this be!?' He asked himself, he knew that strength can get him far enough to victory but it seems this isn't the case anymore. Things of course fuel his rage more and more. Goku stood across him, staring at Jiren with silver eyes of pity.

"Jiren. You know how this would end, right?" Goku said with a stern expression. Jiren retaliates and shot a blast from his right hand straight to Goku. "I DO! I WILL COME OUT ON TOP!"

Goku, in return, dodges the blast sideways with ease and teleport to Jiren before raising his Ki-powered fist to deliver a final blow to put an end to the tournament. "Goodbye, Jiren! You're the most powerful opponent I've ever face and the only one who was able to push me this far. But, this has to come to an end. I'm sure we'll meet once again." Goku said his last words to Jiren before launching his fist toward his face.

However, before Goku could knock Jiren off the platform. , a powerful force started pull him and Jiren which surprise them both.

" What the hell is this force!?" asked the silver-eyed Saiyan as he was being pulled in through the Dimensional crack, along with Jiren and the unconscious Frieza who was floating on a rock. "I need to get those two out of the gravity's reach. I'm sorry guys"

With his mind already determined what to do he releases a powerful Ki blast at distracted Jiren to push him out of the Dimensional crack, and strong enough to eliminated him as he suddenly appears in the stands, as Goku was getting closer, he launched another powerful Ki blast at the Jiren, that pushed him back all the way out of the pull of the Rift to the point where he was also eliminated as he appeared in the stands with his team, shocking them all to their core.

"I did it!... I won this Tournament and save my universe from destroyed, but looks like i can't join them. Goodbye everyone." thought the Goku with a small smile on his face as he was consumed by the Dimensional Rift.

Everyone cries could be heard from the observers, especially those from Universe 7 as they saw the mortal that surpassed the gods with his Ultra Instinct disappear from the World of Void, taken to a world that the most powerful of the gods didn't even know existed.

Unknown Void

Darkness...Everything around felt like nothing but constant pain. The battle with Jiren had left him bruised and battered with injuries from every single part of his body. Goku had never thought his time would end this way, beaten and erased, getting blacked out of nowhere isn't something he expects .

It seems like to him that everything he worked for, struggled for, and cared for was...completely necessary. he felt happy. Life was something special and beautiful that allows oneself to release its full potential with hard work, and that is something Goku definitely achieved throughout his whole life.

"Kakarot! Don't you dare give in! It would be pathetic to see a Saiyan be brought down to his knees!" The image of Vegeta screamed to him.

"You can do it Goku! We believe in you!" Tien , Krilin , Android 18 , Android 17 , Piccolo .

"I am proud to be your teacher , Goku." Roshi support him.

"You got this dad!" Gohan cheered .

" I'm very happy to stay together with you until the end . However , You must live and find your happiness " . The image of Chi-Chi smiled to him.

Ignoring the intense pain, Goku decided that this was finally the end . with a bright smile on his face he use all of his power to get out from Void with transform into Super Saiyan . His black hair transform into golden , his eyebrows turn into golden , and golden ki started appeared around him. As he trying to get out from Void another force suddenly interrupt him. His body trembles at intense speed as Goku felt another huge pull that puts him at unbearable pain and stress.

Fate Grand Order Universe.

Fuyuki 2004

' This situation worst than before ' though someone. he was adult male wearing a short, light-blue cloak with a fur-lined hood that was up and covering his eyes. His arms and torso were covered by a see-through piece of clothing that showed off his muscles. He wore robe-like pants and a segmented belt around his waist, but his feet were bare. He welded a wooden staff that had a club at the top with a charm on the tip of it. Those knowledgeable in mythology would say that he resembled a mage of the forests: a druid. He had blue hair that was tied to the back, which reached down to his waist and piercing orange eyes. His name is Caster. He is servant of holy grail war.

" I need some strategy to figh-" Before he was able to finish his final words, a sudden explosion nearby created a powerful wind that knocked him and the large tree down along with others. Shocked by the explosion, Caster began jogging toward the location of the explosion

Upon reaching it, Caster saw a beaten, masculine man lying down in a giant crater. Bruises from top to bottom. The spiky haired man seemed to be out and helpless among the rubble. " Just what happen to him ? " He began climbing down toward the man and dropping next to him.

Checking his pulse, he seems to be alive, but barely holding on. Lifting the man onto his shoulders, Caster began to journey back toward his base camp and looked at unconscious man . " Your body is too heavy . Just what are you ? "

As Caster still carrying spiky haired man three figure watching them from a far.

Standing near the city of this ruined city was a small group, composed of three figures. The first was a woman, with light blue skin and long white hair. A golden headband sat atop her head, shaped into a broken infinity symbol. She wore a black and red skin tight bodysuit, with a v shaped hole that exposed her stomach and lower breasts. A white cape fluttered around her legs as her purple eyes scanned the image before her, the woman's grasp on her staff tightening.

"Of all people, of course Son Goku would be the one to appear. The Saiyan that always seems to end up getting some edge over whoever he deems to be his opponent," she said, glaring intensely at the martial artist. "What do you think, Mira?"

"His appearance is of no concern," the second figure stated, crossing his arms. His pale blue skin and white hair seemed to almost match that of the woman's, while his red bodysuit was covered by a piece of white armor, a brown strap wrapping around the back of his neck. Around his lower body, an almost cape-like set of pants hanging from his waist.

"Maybe to you, but this is quite troubling in the long run," the woman replied, turning towards Mira. "We've managed to keep off of the Time Patrol's radar so far, and that has helped us gain an already plentiful amount of energy so far, but his arrival could mean they finally start looking in the right places for us!"

"Towa, whatever they intend to throw at us, I can handle," Mira said, his unflinching gaze turning towards her. "The Time Patrol may be able to fix what changes you cause, but they will be unable to stop us in the long term."

"Let us hope you are right, Mira. I cannot afford to lose you, not when we are so close to finally achieving our goals."

"Of course. Though, I do not intend to fight them unless I have to. That is what we brought him for, isn't it? As a first line of defense?" Mira asked, Towa chuckling as she nodded.

"As clever as always, Mira. Yes, I did bring our new friend along in case we needed to be a bit more physical. Though, even with the boost I gave him, he isn't much compared to Son Goku," the female demon said, turning around to face the final figure.

Leaning on the still intact wall of one of the few remaining buildings, the final member of the group wore black and gold armor, a strap wrapped around the back of his neck as well. His black, spiky hair shot out in several directions, while a white mask set on his face. A black infinity symbol, broken on both ends, was present over the figure's eyes, a pair of glowing red dots making up for his hidden face.

Pushing himself off of the building, the masked figure took a few steps forward, coming to a halt a few feet in front of Towa. Without a word, he glanced over her shoulder at the floating image, staring intensely at the saiyan being monitored.

"You don't think he remembers him, do you?" Mira asked, glancing at the image of Goku, before staring at the masked figure.

"Not at all. As long as that mask sits on his face, he hasn't an ounce of free will in him. He's my perfect puppet," Towa replied, laughing slightly as she grinned. "He wouldn't recognize him, anyways. They're from different parts of time. The only time they ever met, one was too young to remember the other, while he wouldn't be able to tell him apart from any other low class saiyan."

"Good. The last thing we need is another saiyan trying to stop us," Mira replied, giving one last glare to the Masked Saiyan, before turning away.

"Oh, do lighten up, Mira. Everything is under control, as long as Son Goku doesn't meddle too much in our affairs," Towa replied, turning back towards the image, pausing. Raising a finger to her chin, she chuckled. "Actually… why don't we put on a little test. See which point in time he's really from?"

"A test? Such as…"

" That girl with black armor become host of one of seven dark dragon ball. I heard from that Namekian kid (She brainwash Dende to working with them or just check Xeno Dende in Dragon Ball wiki) One of Dark Dragon Ball can boost someone level to become unbelievable ." she chuckled " We can put her against Son Goku to see how strong is he "

" I see "

' Just wait Mechibakura Sama , soon we will use dark dragon ball to make your into young again which restore your power and destroy time patrol ' Though Towa with smirked.

This is first chapter of Saiyajin of Chaldea.

Sorry for my bad english

I will involved many DB element from , DBFusion DBH , DB Xenoverse , DBGT and DBS into this story.

- Time Patrol such like Xeno Goku , Xeno Vegeta , Chronoa , Xeno Gohan , Xeno Goten and Xeno Trunks will appeared on Lostbelt because they will prevent Chaldea from destroyed Lostbelt timeline. There some conflict between Chaldea and Time Patrol. Many servant just like Scathach , Enkidu , EMIYA and the others will have their Xeno Counterpart

- DB villain from DBGT and DBS will appeared in many Singularity . The reason why they appeared because wormhole send them into Fate Grand Order verse. If you playing DB Xenoverse 2 you will understand about that or just check Wormhole in Dragon Ball wiki.

- This story is inspired by God Slayer and Saiyan God only different This Goku from DBS not his Xeno counterpart.