It was early in the morning and the lone Uchiha was making his way back to the Leaf Village after his parents took him away from the Village when he was just a baby, he was raised differently than most Uchiha because right from the start his parents kept his real identity a secret, until one day a mysterious man appeared at his home, slaying both of the Uchiha's parents. Wondering why the man killed his parents, the man told him that he had to kill them and that they kept a secret from him and the secret was that he was an Uchiha, shocked the Uchiha ran away before the man would kill him, but the man never chased him because he had disappeared. But before going his voice trailed off telling the Uchiha to go to the Leaf Village and find his brother.
Since that day he trained himself to fight, but before he could do anything else he had to go to the Leaf Village and find Sasuke Uchiha.
Meanwhile Sasuke was on his way to meet Kakashi that told him to meet him at the training grounds. Sasuke feeling ready for what Kakashi had in store for him, decided to pick up his pace so he could get there quicker and fit in more training, when he got there his sensei was nowhere to be seen which was normal because Kakashi had never showed up at any given time and instead always arrived late, using the same excuse all the time.
While waiting Sasuke decided to fit in some practice of his own, throwing his shuriken in multiple directions hitting all of the nearby training posts dead in the middle earning himself a smirk. But before he continued he heard someone approaching his location and it wasn't his sensei. Quickly acting he threw one of his kunai into the nearby bushes, listing for the impact, but nothing was heard meaning that there was no one there or they where skilled enough to catch his kunai which is pretty hard when it's coming towards you. Sasuke checked the nearby bush for any sign of the enemy, but in the end not finding anything he couldn't even find his thrown kunai, but he just shrugged that off and returned back to the training field, but when he got there, someone was standing there with Sasuke's kunai in his hand.
"Your accuracy is pretty good for an ordinary ninja, you must be Sasuke Uchiha, am I right"
"Who wants to know, plus its polite to introduce yourself before asking for my name" Sasuke replied ready for any sudden attacks the mysterious boy might make.
"My name is Ishiku, and just like you I'm an Uchiha"
"That's a lie, all of the Uchiha were killed by my brother long ago, and you can't possibly be an Uchiha"
"I thought you might not believe me, but might this brother of yours be called Itachi Uchiha"
"How do you know him, tell me?"
"As I said I'm just like you, I'm an Uchiha whose parents were also killed by the same person who killed your family and our entire clan"
"How's that even possible there was no one left in the area after his massacre"
"That's because my parents moved away from the clan and settled down somewhere outside the village so I wasn't there during the time"
"Still I don't believe you, if you want to convince me then perform the Uchiha's signature Jutsu which is the Fireball Jutsu then I will believe you"
"Fine then if it's the only way I will convince you then I will do it"
Ishiku performed all of the hand signs and took in a deep breath, the result after this put a shock on Sasuke's face, as Ishiku made a large fireball come out of his mouth and shot towards the river. Sasuke was standing watching the fireball crash into the river, thinking if Ishiku was really an Uchiha.
"Well Sasuke is that enough proof for you"
"I don't know if I really believe you yet but why have you come looking for me"
"Because I want to find Itachi and help you kill him, so I can get revenge for my family's death, so will you accept my help"
"Look I don't know if you're a real Uchiha and until then I don't need any help, but you can train with me if you want, my sensei should be here soon"
"Thank you"