Disclaimer: I wish that I don't need to do this. I don't own anything.
While Goku was sleeping peacefully, a voice sounded in his head. Goku gets up instantly suprised by this. "Hello, Goku is this you?" said the man. "Yes this is me King Kai." Goku said smiling finally speaking to someone he knows. "Ah, I finally found you. You were lucky that I can sense a little bit of your energy when you went Super Saiyan. I've told you not to go through that door. Inside there was the root of all things. Why didn't you follow my instruction Goku?" said King Kai in an angry tone. "Well you said that in there lies many powerful people. So, I thought they wouldn't mind fighting me a little." said Goku while rubbing his head. "Are your head only filled with fighting Goku. Well, doesn't matter know. I know where are you but what are the situation you are in now?" King Kai questioned Goku.
"Well I am in something that is called a holy grail war. I was summoned by a girl named Illya. She was surprised that she got me at first but after she investigated a little she was really happy for some reason. She told me all about the holy grail war and the holy grail." said Goku explaining to King Kai. "Wait, what is this holy grail war you're talking about and what is the holy grail." asked King Kai. "I thought you know King Kai." said Goku teasingly. " If it isn't the business of my side of the Galaxy why should I care" said King Kai."Well, Illya said the holy grail war is there are 8 masters that summon different types of legendary hero. But I still don't know how do I qualify for a legendary hero though?" said Goku. " Well you are quite famous Goku. Saving the world from Frieza, Cell, Buu and even facing off Lord Beerus. I think maybe that is enough to be a legendary hero." explained King Kai. "Well enough of that. What is this Holy Grail you're talking about?" asked King Kai.
" Well, Ilya said something about the holy grail being connected to the root and she also said something about it granting wishes but only one." said Goku. "Okay, that's good enough. I think I understand what happened to you Goku. When you enter through that door, maybe you were sucked in to the root and just about time to intersect during the girl Illya's summoning. Maybe that's why you are there. But it's okay, now that I know your location I can just asked Shenron to bring you back." explained King Kai. Goku then went silent for a moment to think about it but because he already made up his mind to wish back Illya, he needed to save the dragon ball for those things. His energy reserve is still a lot but it was slowly decreasing. If his energy is finish he can still use Instant Transmission out of the root of all things. "Wait King Kai, don't use the Dragonballs. I still need to resseruct someone who died here. If you do use the Dragonballs than it would be too late to resseruct her." said Goku. "Okay Goku but how are you going back." asked King Kai. " I can just IT to your place and back to earth now that I can sense you King Kai." said Goku. "Why didn't I think of that. Okay, now when are you coming here. Because your family is really worried." King Kai questioned.
"Tell them to wait a while. I'll be back." Goku cut of the telepathy as he sense someone was coming there. "Hello, Goku can we begin this training early. I promised Saber that I will go out with her later" said Shirou nervously. "Oh, a date. Quite a lady killer are you." said Goku teasingly. "No, it's not a date. We're just going out." Shirou said firmly. "Well, it's okay. Do you want to start training now?" Goku asked Shirou. "Yes, please!". Rider who is also now staying in Shirou house because she just became Sakura's servant was now watching them train. "Who is that Sakura?" asked Rider. "That is Shirou's martial arts master that he found on the street. Why did you ask Rider?" asked Sakura. "Well his skills are quite impressive and his power is above that of an average human." explained Rider. "Well, Shirou did say that Goku had told him that he was always involve in weird and dangerous situation. That's why he didn't even bat an eye when seeing you walking in looking like you were. Maybe that's why." suggest Sakura. "Hmmm... Maybe you're right Sakura but there is something weird about him." said Rider while watching Shirou train with Goku.
After a grueling training. Shirou makes haste to prepare for his 'Date'. Later Shirou and Saber both went out. Sakura feeling a little mad that Shirou is going out with another girl went out for a walk. Goku who just now finished training Shirou are thinking which Servant should he go to next. The more powerful one or the two servants in one place. Just when he was about to decide, he heard a scream. It was Sakura's. He went to the place he heard the scream. When he arrived he saw a woman in a robe flying while carrying an unconcious Sakura with her. He also saw Rider there chasing after the Robe woman jumping from roof to roof using he amazing agility. Goku who doesn't want himself to be found, hid before Rider could see him. " Whew, that was a close one. Just a little more and Rider would see me."."Well now that they are gone. I can just sense where they are going". Goku uses his sensing ability to sense the energy of Rider and the robed woman. "Well, it seems they are going to that temple over there." Goku said concluding where they are going.
Goku decided to use his super speed to catch up to the rather than flying so he would not attract attention, but it was rather strange. He could not sense anybody nor see anybody. Eventhough people couldn't see him as he was running in super speed, he should have seen someone. Goku decided to leave it be and catch up to Rider. When he arrived there, he saw Rider was fighting a samurai. He went to her only to see that she was getting pushed back by the samurai. "Rider are you okay?" asked Goku as he was concerned for her. "I'm okay but why are you here? You are only human. You should leave before he kill you" state Rider. "My job is only to keep people from entering the Gate. So, it doesn't matter me if you want to run." Assassin said interrupting the conversation. "Well Rider you want to save Sakura right. I will help you get in but don't ever tell anyone about what I'm going to do okay." said Goku as he powered up.
"Wha..What are you doing? Y..You, your power has risen. You're Berserker aren't you. There's no mistaking that large amount of power. Why have you been disguising yourself as a human. Are you going to kill us." questioned Rider scared at what Goku would do. "No, my master is already dead and I have no interest in the holy grail. All I'm trying to do is stoping this Holy Grail war. Because of this war someone like my master had led a terrible life and died, I would never let anyone die again." said Goku. "Don't worry Rider, when I create an opening you go and run inside and get your master." Goku said while taking his stance. " But there is a barrier there. How could I go in?" asked Rider. "Don't worry, I'll handle it." Goku said confirming Rider.
"So, you're going to fight me now. But you don't have a weapon and it wouldn't be fair to you." Assassin said. "Don't worry about me just worry about yourself" said as he suddenly and appear behind Assassin trying to punch him. Assassin quickly turn around and uses his blade to counter the attack. When both fist and blade touch it made a sound as if there are metal clashing against each other. Goku then send in a couple of punches and kicks but it was all blocked by Assassin. "You're quite skilled Assassin. I bet you were really skilled when you were alive." said Goku praising Assasin. "You are also quite strong yourself. Who would have thought that one there will be a person who can stop my attack using his fist. Your skin must be really hard." said Assasin. "Huh? What are you talking about. Come on lets fight. takjing We're done with the warm up already right. Lets get a little serious. But I will not go all out because I don't want other people to know of me. That means can you not tell anyone Rider. It would get me in trouble if you do that." Goku said to both Rider and Assassin.
Assassin was surprised at how powerful his opponent is without a weapon. Goku managed to block or evade any attack that Assassin made and still manage to counter attack. "How about this!" Goku screamed as he threw a a Ki blast at Assassin, but Assassin manage to avoid the Ki blast."You missed me" said Assassin. "I didn't aim for you." said Goku as he looked at what happen. "Now Rider go. I will handle Assassin. You just run to Sakura." Goku said. Rider saw this chance and take it. She ran as fast as she can. Just when he was just about to reach the Gate, Assassin appeared and was ready to strike. But Goku suddenly appear in front of Rider to block Assassin. "Go know!" yelled Goku. Rider then went and go through the gate and into the temple.
"I failed my job but I would not go down without a fight" shouted Assassin. It's time fort fo 'Tsubame Gaeshi'. Assassin used a noble phantasm level technique that was called Tsubame Gaeshi. This attack would be virtually unavoidable if he followed the steps perfectly. Goku was know surrounded by blades making it almost impossible for him to avoid the attack. Assassin had used the attack Tsubame Gaeshi perfectly. But because Goku was faster than any other servant, he just vanished leaving an afterimage of himself. This surprised Assassin and make him on guard. He then saw many after image of Goku surrounding him. "You're fast Goku. I haven't meet anyone that can make this much of an afterimage clone. But you underestimated me." said Assasin as he made a wide horizontal slash clearing some of the afterimages. All of the afterimages dissapeard as Goku reappeared in front of Assassin. Goku then go to his fighting stance and went and attack Assassin. "I'm not going to give up now!" shouted Assassin as he went torwards Goku.
The fight was going on furiously. Eventhough Goku could just end everything by flying up to the sky and just spam Ki attacks, he doesn't want to. He doesn't want to hurt other people and he want to fight Assassin on even ground. The clash of Assassin and Goku produce sparks as Assassin sword hit Goku's fist. Even with Goku's speed, Assassin was still managing to block Goku's attack. But if people were to have seen the fight, they would know that Goku was getting the upper hand. All that Assassin manage to do was blocking attacks while Goku was looking like he was having fun attacking Assassin. But Assassin defence would not hold out forever. He would likely slip anytime now. Then Goku uses his rush against Assassin. The overwhelming attack manage to overcome Assassin defence. Assassin was not able to block one of Goku's uppercut. The fist managed to hit Assassin stomach and making him bend over. Goku uses this chance to strike him again in the face making his head jerk backward. Then Goku kick him in the chest launching him onto the stairs breaking it.
"You were a good warrior Assassin but you were just not strong enough, but that was a great fight. Maybe sometime if we meet again we could spar without going for each other throat." said Goku as he was looking down on Assassin that was on the floor. "You were also a respectable and powerful warrior Berserker. I thought that servants in your class were savages with power but I can see that you were holding back a lot fighting me. Next time we meet, it would be nice if you wouldn't hold back."Assassin said as he was closed his eyes. " Alright, now that this is done maybe it would be better to check out what happen to Sakura" just when Goku was about to get going, he sensed an evil energy coming here. Just when Goku looked back he saw worms, a lot of worms coming to swarm Assassin body. Goku then uses his super speed and appeared in front of Assassin body and creates a shield so that the worms doesn't come near Assassin body. "What are you and why do you dare to defile Assassin body?" shouted Goku. The worms then combined themselves to form a human body. It looked like an old man. " Oh, you must be Berserker that doesn't have a master. I thought if using Assassin's body to summon the True Assassin but I think it's better if you be my servant instead." said the old man. "My name is Zouken Matou. Would you like to be my servant?" said the old man. "Leave know." said and angered Goku powering up. Goku uses his Kiai to blow Zouken away. The Kiai managed to blow half of Zouken's body. Zokuen quickly dissolve and dissapeared. " If you were to disturb me or the people I know again, I will kill you." said an angered Goku.
After lowering his anger, he went to catch up to Rider only to see battered up Rider and an unconcious Sakura. "Well the other servant is here. Don't you worry I'm just gonna us this girl to call the grail." said a woman in a robe. She introduced herself to be Caster. "I know that your defences would be low in the morning. So, I used my magice to create a barrier so that people would not come anywhere near the place I would go." explained Caster. "So, that's why I couldn't sense any life energy nearby." thought Goku."Please don't hurt Sakura, she didn't do anything wrong." yelled Rider. Caster didn't care and went on with her plan . Goku having heard this was furious at what this person was thinking. He than went to confront Caster but was stopped by her master. Goku who was now furious, let his Berserker status take over and just punch the master aside. Caster master was knocked into a wall and fell unconcious. Caster heard this and shouted " What are you doing to my master." She then flew down to tend to her master. " You will pay for this." Caster said as she fires many volley of magical energy at Goku. Because if Goku strong shield it doesn't even manage to scratch him. " Ceh! I have to use this mountain ley lines for more power." She then proceeds to fire more powerful magical blast at Goku. Goku getting tired of this flew and tries to hit Caster but instead hit her shield. Caster was blown away at Goku strength. Goku hit it another time and break the shield. He punch her down to the ground. At the ground he fires volley of ki blast making dust rise.
She was now heavily injured with her robe tattered. Goku was now standing right infront of her just about to launch the finishing blow. When suddenly her master comes between and held his arms out trying to protect her. This manage to make Goku come back to his senses out his Berserker state that was produced by his saiyan genes. "I'm sorry, I don't know what came over me. But you shouldn't sacrifice anyone just because a wish. If you want I will give you a wish but you have to promise not to hurt anyone anymore. Both Caster and her master understood this. They would stop doing what they were doing. Sakura was also now save and just when Rider was going to pick her up. A dark energy then began to come out of Sakura. Goku sensed this and go to Sakura quickly. He then uses the good Ki energy that he managed to extract from the world in that second and transfer it to Sakura. The ki energy he manage to get could also be considered a good type of energy because the world could be considered innocent. The energy was use to counteract the evil energy that he had sense. Little that Goku know that his actions has stop an evil birthed into the world again.
Goku having done with this decided to teleport both Sakura and Rider home. Just when he teleported away. Someone in golden armor came and looked at the surrounding. The man saw that caster and her master was still alive. "Looks like the mongrel didn't finish the job. Well so much fir my high hopes." He then pointed his finger at them and said "Gate of Babylon". Weapons such as sword started to come out of nowhere and and flew to both Caster and her master. Caster tries to get up a shield but she wasn't fast enough. Lots pf weapon stabbed Caster and her master. Their last scene together was how Caster was seen protecting her master with her own body but still can't manage to prevent him to die. " Well now that I have met my lovely Saber and killed this mongrel, I think it would be better to go and rest a little right Kirei" said Gilgamesh.
At Emiya manor after Goku had transported them near there, they went inside only to see Saber on the bed and Shirou beside her. This surprises them. Suddenly, Rin burst to the door saying "Get back everyone, that guy with the gravity defying hair is a servant.". Making Goku, Rider and Shirou flinch. " No, he is not an enemy. " said Rider. Sakura was already put in another bed in another room. " He is not bad he even saved me and Sakura."said Rider desperately. "What happened Rider " asked Shirou. " We can talk about it later but first we need to get rid of this gut" said Rin. "He was the one who killed Archer. I would never forgive him" Rin said holding out her gems. "Everyone just stop. This is my house and I want you guys to be quiet for a while." yelled Shirou. Everyone there went silent. They all went out of the room to talk about this. Luckily, Taiga was a heavy sleeper,so he didn't heard any of this happening.
"Alright, you go first Goku. Who and what are you?" asked Shirou. "Well I'm a servant from the Berseker class. I shouldn't be here in the first place but because of some mix up. I was sent here. My master was killed by Archer because he thought I was too dangerous. I killed him and decided to stop this war. After that I was attacked by Lancer but Saber and Shirou was just on time so I don't have to fight him. I was also hungry and doesn't have a place to stay but Shirou was kind enough to volunteer himself. I'm sorry about Archer but he wouldn't stop attacking me." Goku apologises to Rin. "You're next Rider" said Shirou. "Sakura was kidnapped by Caster but Goku managed to help save her and myself" said Rider. Rin was now contemplating. Goku was a nice guy but he was the one who killed Archer. It looks like he has to get over it. "Now you're next Emiya, what happen to Saber?"asked Rin. "We met some one named Gilgamesh. He was strong. He was stronger than Saber. But we managed to fend him if when I took out something called Avalon that was somehow always inside my body. It was supposed to belong to Saber because it is the sheath of Excalibur. The thing manage to block Gilgamesh attack. After that he disappeared and Saber collapse. I carry her all the way home." explained Shirou.
"It looks like Saber is out of energy. Because of your unperfect summoning. You can't tranfer any mana to her. But there is one way for you to transfer mana without that and that in in the way of intercourse by giving her some of your magic circuit." said a serious Rin. "What? I have to do that with Saber" said Shirou nervously. "Don't worry I would also be there to guide you through the process." said Rin while blushing. Things was getting hot in the room but suddenly Goku spoke. " Oh , you don't have to do that, I can just transfer some of my energy to her and I can do that without the whatever intercourse your talking about." This made Shirou and Rin disappointed because now there was no reason for them to do that. Goku now went to Saber room to do that. He made a ball of Ki energy for on his hand. This made Rin and Shirou surprised that someone like Berserker could control this pure untransformed energy. Goku then push the energy onto Saber's stomach. This made Saber's body jerk a little. The energy then began to flow through Saber body. Her body now was radiating with blue energy." It would take sometime before Saber get used to the energy. I suggest that we go eat first." said Goku. "Alright Emiya let me help you with the cooking this time." said Rin. " You don't have to Rin. " said Shirou sheepishly.
At the Matou house, Gilgamesht was seen walking near there. " Well mongel, Kirei asked me to kill you because you are not worth it anymore. Personally I always hated you." said Gilgamesh to Zouken. He then fired his weapon using Gate of Babylon. Then he pulled out EA and use Enuma Elish at Zouken fully vaporising him. "That was not worth my time. " Gilgamehs said as he went back to the church.