Disclaimer: I don't own The Flash or Naruto, I only own an oc or two, the idea for the story and some other stuff I came up with.

To be clear : (AU Narutoverse) In this universe Sasuke and Sakura had a moment (if you know what I mean) on the night before Sasuke left for Orochimaru (I know it's wrong since they were like 13 at the time, but this is the best I could come up with.) which resulted in a baby boy named Senshi being born around the time they were 14 (No fillers here). Sakura gave the baby up when he was born as she was depressed that his father wasn't around and due to the fact that she wanted to focus on her training and bringing Sasuke home.

Sorry for any spelling or grammar errors.

Senshi's story

Senshi Uchiha was born to Sasuke and Sakura Uchiha on 25 July in the year that our world knows as 1999.

His mother gave him up after he was born as she was depressed that his father wasn't around and due to the fact that she wanted to focus on her training and bringing Sasuke home.

Senshi was adopted by a family of travellers who just so happened to be full of former shinobi. After listening to the stories of many famous shinobi, Senshi became interested in becoming one himself and started training as soon as he could.

At the age of 7, Senshi unlocked his Sharingan after finding out that he was the son of Sasuke and Sakura Uchiha.

This change made him develop an addiction to training and fighting which slowly started to make him more angry and hateful.

At the age of 11, Senshi's adoptive family was killed by a group of rogue ninja, afterwhich he unlocked his Mangekyou Sharingan and used it's abilities to kill them all.

Senshi would spend the next 4 years travelling around the world while training and doing work as a mercenary.

At the age of 15, Senshi would encounter Shin Uchiha and the two would engage in a brutal fight where many of Shin's clones would be killed and Senshi would lose his left arm while also suffering several other serious injuries.

Due to the 4 years of overusing his Mangekyou Sharingan, Senshi would be left on the verge of blindness.

Due to his injuries and extremely impaired eyesight, Senshi would wander for a short distance after his fight with Shin only to collapse and be found a while later by Karin and Suigetsu who took him to Orochimaru.

Within a short while of arriving at the hideout, Senshi would wake up and despite his injuries would activate his Sharingan and attempt to attack Orochimaru only to quickly collapse again.

The young Uchiha would be kept on life support while arrangements were made to get Sasuke to come to the hideout.

A few days later Sasuke would arrive at the hideout to find out what Orochimaru wanted to talk to him about and that was when the snake sannin told him about the boy.

At first Sasuke refused to believe that Senshi was his son, but then he remembered the night he and Sakura spent together before he left for the Sound Village and a DNA test did the rest.

After seeing Senshi's injuries and hearing of his depleted eyesight, Sasuke asked Karin and Orochimaru if they could heal the boy, use some Hashirama cells to fix some of the more serious injuries and transplant his old Mangekyou eyes into him.(I'm not going with the theory that the old eyes are fused with the new ones.)

The two agreed and immediately jumped into action to save the boy.

It took Senshi a while to recover and wake up, but when he did, he not only noticed that his eyes were fixed, but somehow they felt stronger than before, infact his whole body felt better and his chakra levels felt way higher than before. He was also shocked to find several areas on his body had a snow white discoloration and that his left arm up till under his shoulder was this same color. The chakra that radiated from those areas felt especially strong.

Realising that he must've been in someone's secret base due to the fact that he'd been healed very well and that he vaguely remembered being found by two strangers before his lights went completely out, Senshi decided to take action quickly and slipped on the fresh pair of black ninja pants that had been neatly folded on the small chair next to his bed and activated his Mangekyou Sharingan. The young Uchiha took note of how different his eyes now felt. They didn't hurt anymore or feel strained, sure they took a little bit more chakra than usual, but other than that, they felt pretty good actually.

When looking at a nearby mirror, Senshi noticed that he now looked a bit taller than he remembered and that his mop of raven hair had grown to his shoulders, but the biggest changes were the snow white areas of his body and his Mangekyou. Instead of just an inverted Sharingan with elongated tomoe, the red tomoe each gained a small black circle in their centers and the points now connected the tomoe with eachother to create a circle around them.

Yes, Senshi had gained the Eternal Mangekyou Sharingan.

Senshi was shocked to realise that his eyes had been replaced, but quickly shook it off in order to go find the person or people that ran the place, fixed him up and replaced his eyes.

The young Uchiha soon found Orochimaru, Karin and Suigetsu and confronted them, demanding to know why they helped him and where his old eyes were.

Orochimaru took the lead and told Senshi that they simply helped him because he needed it, that his old eyes were put into storage and that two people were coming to meet him soon.

The young Uchiha still didn't trust the three, but decided to wait for the two people who were apparently on their way to meet him.

Around a day later the two arrived, Sasuke and Sakura Uchiha.

When the couple laid eyes on their long lost son and he laid his eyes on them, it was safe to say that reactions differed.

Sasuke did a respectable job at hiding his emotions, but couldn't help but crack a small smile.

Sakura gasped and whispered the boy's name before bursting into tears of happiness and running to him and embracing him in a tight hug.

Seeing his biological parents and the fact that his mother was hugging him sent Senshi into a thunderstorm of emotions such as happiness, fear, sadness and anger.

A sudden pain and power surged through Senshi's body, but mostly his eyes. This made Sakura let go of him and back up a few feet.

Everyone gasped as Senshi's Eternal Mangekyou Sharingan started to change. In a scream of anger or pain, the boy's eyes changed from EMS to a light purple color with a ripple pattern and a darker shade of purple in the pupil area.

Senshi now had not only the Eternal Mangekyou Sharingan, but also the Rinnegan.

A sudden exhaustion overcame the young Uchiha and he passed out.

As Senshi woke up, he could here Sakura talking about how she wanted to take him back to the village and how she wanted him to meet Sarada with Sasuke mostly agreeing by giving his trademark "hn".

When the young Uchiha woke up, he confronted his parents and a back and forth argument ensued. Eventually it was decided that Senshi would travel and train with Sasuke to learn new jutsu and to learn more about how to use and understand his EMS and Rinnegan.

And so for the next few years Senshi travelled and trained with Sasuke until the older Uchiha decided that it was time for him to go to Konoha.

Senshi had by no means forgiven his parents, but he did truly wish to meet his little sister, so he decided to do what his father told him to do and headed over to Konoha.

When the Young Uchiha arrived at the village gate, his mother and sister were already waiting there for him.

Sakura awkwardly introduced the siblings to one another, but by the end of the introduction, Sarada already had her arms wrapped around her big brother's waist with tears pouring from her eyes. Tears started to leak from Senshi's eyes as he wrapped his arms around his little sister. Sakura watched on while crying tears of joy at the interaction between her children.

The next year or so went well with Senshi opening up more to his family while trying to be a good mentor for his sister by helping with her training while their father was away and keeping her company while their mother was busy.

Senshi spent his free time training and working on some jutsu of his own creation.

The biggest project that Senshi was working on was a dimension travel ninjutsu. This would be where the young Uchiha's life took an unexpected turn.

It seemed as though Senshi miscalculated, made some kind of mistake with the hand seals or the jutsu was simply defective as right before him a wormhole of strange blue energy opened up and sucked him in before he could react. The wormhole closed behind him leaving only the now mostly burned scroll that Senshi wrote the instructions on.

(I know that this part had crappy writing, but hopefully you enjoy the rest of the chapter.)

Earth-1

(2018)

A young woman in her early 20's of obvious Asian descent with her brown hair tied in a french braid, dressed in grey skinny jeans, sneakers and a black leather jacket over a grey turtleneck sweater could be seen standing outside a blue weathervan in the middle of nowhere while holding a strange staff with a strange orange energy glowing from the part under the old anemometer.

The woman's eyes were focussed in front of her as she slowly moved her staff in a small circle and in the distance a tornado formed. The tornado was easily an F2 tornado. Soon an almost identical tornado formed not too far away from it.

Out of a flash in the sky fell Senshi, but he was too far away for the woman controlling the tornadoes to see him clearly so he was soon being ragdolled by the tornadoes until he was finally able to collect his bearings and activate his EMS.

The Uchiha manifested his Susanoo.(Imagine like Madara's full humanoid Susanoo, but green and with a large horn on the left side of it's head instead of the double faced ridgehead that Madara's had.)

The sheer size and weight of the Susanoo allowed it to stand on the ground with it's own two feet as Senshi made it use it's arms to block the two tornadoes on it's sides while he looked for a possible jutsu caster who could've created them. He soon spotted the woman with the staff.

The woman felt somewhat scared when she saw the giant humanoid creature form out of nowhere and easily block her two tornadoes, so she started spinning her staff more aggressively which started making the tornadoes progressively stronger.

For Senshi the pressure was starting to increase, but that part of him that liked to fight was enjoying it. He knew that he'd need to get away from the tornadoes soon though so he decided to stop playing around and manifested his Perfect Susanoo.

The woman couldn't believe her eyes as the humanoid creature grew not only larger, but also grew a set of armor which resembled a samurai with pair of wings on it's back. The creature managed to push the tornadoes away from itself and started flying towards the woman at fast speed.

Senshi made his move and used his Susanoo to fly towards the woman with the staff. The woman used her staff to bring lightning down on the Susanoo only for it not to have any effect at all.

The woman backed up in fear as she saw that nothing she was doing was having an effect on the giant green monster.

When he was about twenty feet away from the woman, Senshi decided that it was safe enough to deactivate his EMS and let down his Susanoo, so he did.

The woman was surprised when she saw the giant monster dissapear and out of the cloud of dust appeared a well built young man close to around her age. The young man stood at around a height of 5'11'' with fair skin, a mop of shoulder length raven hair and dark eyes. He was dressed in grey pants, black bootlike sandals and a black long sleeved shirt with a red and white fan symbol in the center of the chest area. The young man wore a belt which held a sheath with black handled sword.(Sasuke gave Senshi the Kusanagi.) The young man's left hand also appeared to be bandaged up.

Sensi already predicted that what the woman was doing wasn't some kind of jutsu. As from what he could tell, her body wasn't generating significant chakra for ninjutsu or genjutsu and there was a strange energy radiating off of the staff.

The Uchiha would admit that he found this woman quite attractive actually.

"What's your name stranger?" asked Senshi calmly in a surprisingly deep voice.

The woman didn't answer due to still being in shock at what she witnessed just moments before, but was somewhat surprised at the young man's deep voice.

Senshi decided to test his boundaries a little by body flickering in front of the woman and snatching her staff from her hands. The woman was surprised, but quickly recovered with a look of outrage.

"Give me that you bastard!" shouted the woman in outrage at the fact that the young man took her staff and was now arrogantly twirling it around even though he didn't know how it worked.

"If you give me your name then maybe I'll consider it." said the Uchiha nonchalantly.

The woman walked to Senshi in order to grab the staff only for him to hold it up high above his head.

The Uchiha decided to test his boundaries even further by catching the woman around the waist with his right arm when she jumped up to try and grab her staff and forced his lips onto her's.

The Uchiha kept his lips attached to the woman's as she started to struggle to break free by squirming and trying to force herself from his grip. He finally let her go after a few seconds of the woman struggling.

"Who are you, you creep?!" exclaimed the woman as her face burned red with embarrassment and rage.

"Senshi Uchiha, now give me your name." said the Uchiha in a mocking tone.

"It's Joss Jackam, now give me back my staff you fucker!" shouted the woman now identified as Joss Jackam.

Senshi thought it over for a moment.

"Since you asked so nicely." said the Uchiha nonchalantly as he held out the staff to the woman who plucked it out of his hand.

Senshi turned around to leave when Joss stopped him.

"Wait, where did you come from and how can you do the things you do?" asked the woman in a voice that held much more authority and confidence than most woman that ever spoke to Senshi.

The Uchiha thought of if he should answer the woman before deciding that he'd do it later.

"I'll tell you some other time, see you soon." said the Uchiha before he started body flickering away to go figure out more of the world he was now in.

Joss sighed in disappointment at the fact that her day had been made more sour than it usually was.

Hope this chapter was satisfying.

Let me know of your ideas and opinions for the story.

Hope you read the next chapter.