In japan an Old man was fighting with another immensely strong person. These after hours of battle the old man was on the ground dying.
Gouken: "Akuma you..." he dies before he could say anything else.
(Judgement Hall)
God: "Hello are you Gouken master of Ryu and Ken correct."
Gouken: "That is me. Might this one know where I am and who you are."
God: "I am God and you are at judgement hall where souls are judged."
Gouken: "So I have perished then."
God: "That is correct but you were a good man one of the best I have ever seen."
The bulky elderly man seemed quite fond of the compliment.
Gouken: "This one doesn't deserve such praise."
God: "I will send you into another world one of ninja for your performance."
Gouken couldn't believe what he was hearing. He didn't think he would get reincarnated into another world.
Gouken was blinded by light before he could say anything. When he awoke everything was pitch black he tried to move his limbs but to no avail.
Gouken felt his body being constricted and pushed. Then two large hands grabbed his head and pulled him.
Gouken: 'That explains everything I am just being born.' Gouken calmly surveys his surroundings.
God: "Hello Gouken I have some time to spare do you have any questions."
Gouken: 'Tell me about this world.'
God: "This is the world of Naruto. A world of shinobi and ninja. People of this world use life energy called Chakra to preform all kinds of jutsu."
Gouken: 'What are they doing to me?'
A man was currently putting a sealing on Gouken's stomach.
God: "They are sealing a tailed beast inside of you. There are a total of 9 tailed beast that are in the world each one is made of chakra and are immensely strong. Strong villages seal them inside people because they can't control them and use those people as weapons in war. People like this are called jinchuriki."
Gouken: 'Which of those is being sealed inside of me.'
God: "The Four Tails Son Goku the King of the apes. I suggest you act cautiously when you meet him. Son Goku is very prideful and hates humans he also hates being called four tails. There was a jinchuriki for this beast already but I decided to take it from him and give it to you."
After God gave brief history about the world Gouken was finally born and was currently wrapped in a towel.
God: "You should train hard a the Third Shinobi World War will start in 12 years."
Just as Gouken was going to ask another question a group of leaf ninja busted in the room and started killing everyone the saw.
Sakumo: "Miss Saiko I'm sorry we couldn't get here sooner let's go back to the village."
Saiko: "I am going to die just take my child and keep him safe now go the will send reinforcements quickly."
Sakumo: "On behalf the village I thank you and your husband for all you have done."
Saiko: "Mom is sorry she can't stay with you my child."
Sakumo: "What is his name."
Saiko: "Gouken."
-5 years later-
A muscular youth was in the library reading books about the history of the world. During these 5 years Gouken was always training or learning. He would train his body from 6 am to 8 pm then head to the library for 4 hours then going to the orphanage to sleep.
Gouken's body was muscular and very strong. He had long straight black hair adorned with one prayer bead and was wearing a gray sleeveless karate gi. He also has multiple prayer beads around his neck and a giant brown rope around his waist.
Gouken: "I should be getting back."
He walks up to the bookshelf and returns the book before heading outside. On his walk home he stops to get some dango.
Dango was his favorite food in this life and his previous one so he couldn't resist eating some every once in a while.
Gouken ate the dango very quickly and continued his walk home when a group of 3 kids around the age of 8-9 blocked his path.
Gouken: 'Ah this will be interesting.'
Gouken: "Why have you stopped me."
Kid 1: "You humiliated my younger brother so I will do the same to you."
Gouken: "Sometimes humility is what one needs to grow."
Kid 1: "Some talking like an old man and fight me."
The kid runs towards him with his fist pulled back. Gouken easily dodges the punch and smacks the boys head before jumping back.
Gouken: "You left yourself wide open in battle mistakes lead to death."
Kid 1: "Guys help me teach this kid a lesson."
The kids charge at him and begin throwing a bunch of kicks and fists. Gouken didn't fight back but instead dodged everything till the kids were tired.
Once they were tired he did a roundhouse kick knocking all of them to the ground.
Gouken: "You guys lack proper technique your fighting is a disgrace to martial arts." Gouken has a very solemn expression.
Gouken: "Learn how to fight properly before you challenge me again."
After the skirmish with the kids Gouken returned to the orphanage and went to sleep.
An anbu member was watching the interaction and laughed before disappearing to go tell the hokage about the incident.