Reincarnated As Mizuki

Shisui body flickered out of the restaurant immediately after he told Mizuki to follow him, clearly in a hurry to show him whatever he had found.

"I'm really sorry Anko"

"Don't worry about it! Dinner's on you though, also you owe me another meal"

Mizuki laughed and shook his head as he reached for his wallet and paid the bill. Anko got the leftover dumplings they didn't eat packed up to eat later, saving them for a in school snack for when they got bored.

Mizuki used chakra to enhance his speed as he jumped from building to building as the urban cityscape gave way to forest.

Mizuki rushed through the now familiar beaten path, until after ten minutes he reached his destination, the training training grounds that the boys used.

Glancing around, Mizuki found that he was not the only one there.

Guy was practicing his taijutsu, kicking a log as he slowly muttered to himself "266...267...268..."

Obito was also there, he was practicing his fire style as Mizuki noticed a large ball of flame travel across the lake.

However, what surprised Mizuki most was that Kakashi was there as well, he was practicing using his sabre, creating flashes of white light as he swung it.

"Finally! Took you long enough to get here!"

Shisui appeared out of seemingly nowhere, using the body flicker technique to teleport into the clearing that the boys used for sparring.

After a couple of minutes, all five boys were gathered, Shisui was facing the other four who were all sitting in a large tree overlooking the clearing.

"What did you call us here for?" Kakashi asked impatiently.

"Calm down, calm down" Shisui replied casually.

After pausing for around 10 seconds for dramatic effect, Shisui then continued.

"I may have just found the most OP jutsu.."

This caused Obito to nearly burst out into laughter, only to look around and realize he is the only one and promptly quiet down.

Kakashi now had a curious glint in his eye as he looked at Shisui "Explain"

Shisui sighed, "It would just be easier if I showed you"

"Shadow Clone Jutsu"

In a puff of smoke, a copy of Shisui could be seen right next to him.

Obito looked at Shisui with confusion"Huh? It's just the clone jutsu?

Shisui smirked as both him and his clone weaved hand signs

"Firestyle: Fireball Jutsu"

Two fireballs then shot into the clearing, much to Obito's surprise.

Obito: "Wow! That's waaaay too damn OP"

Shisui: "Not just that, but the memories of the clone are given to you when it dissolves, also they are actually physically here so they can also use Taijutsu"

Obito: "What's the big deal about the memories"

Shisui: "It can allow you to train twice as fast and also could help with recon missions"

Obito: "Oooh"

Shisui: "Yup"

Shisui: "Anyways, I'm going to teach you guys how to cast it"

Obito: "What?"

Guy: "Really"

Mizuki: "Thanks!"

Kakashi: "Neat"

Shisui then grabbed a large scroll off of his back and opened it, revealing the contents, diagrams and writing explaining how the shadow clone, and multi shadow clone jutsus worked.

Apparently, Shisui had managed to get the Uchiha Clan to give him the scroll to practice with under the condition that he kept it secret.

Obito: "Huh, then shouldn't you be not telling us?"

Shisui: "It's fine, just don't be running down the street shouting that you know it"

Everyone then gathered around the scroll, reading through its contents relentlessly, double and triple checking to make sure that they got nothing wrong.

Demonstrating a level of studiousness that, if seen by their instructor by the academy, would make him scream in surprise, it was the complete opposite of what they were like in class!

After reading through the scroll several times, the boys got up and began to practice the jutsu.

Mizuki quickly realized how difficult this jutsu was to cast, It took him roughly forty five minutes to cast the fire style jutsu that Shisui taught him.

But now? It took him that much time just to create anything, before this all that happened was a puff of smoke with nothing coming out.

After these forty five minutes of hard work Mizuki was graced with a breakthrough; failed clone.

A singular ragdoll looking clone that appeared almost identical to the one Naruto created in the anime when he tried to use the clone jutsu.

Mizuki sighed as he shook his head. It would be a long night. But it would be worth it by the end, mastering the jutsu that every Naruto fan pretended they had at least once.

Meanwhilst, Guy went back to the log he was kicking, he had virtually no talent in ninjutsu, and he knew that he could not perform that jutsu regardless of how hard he tried.

That's why he had to work even harder! So long as he worked harder than them, he would eventually prevail!

He may only use Taijutsu! But so what? He would work harder than everyone! He would be stronger than everyone else! That was the ninja way! HE WOULD LET THE POWER OF YOUTH EXPLODE!!