Kakuzu looked at the four Narutos and made sure to keep track of who's the real one to not kill him accidentally.

Two of them rushed from the opposite sides, while the real one and the last clone prepared a Rasengan.

Seeing that, Kakuzu was contemplating if he could just tank it with his Earth Release: Earth Spear technique, but he decided to just continue to use his long-range advantage instead of trying it.

Four of his "octopus arms" moved towards Naruto preparing his Rasengan, while the other four moved towards the approaching clones.

But then a wood wall appeared and blocked it.

However, Kakuzu didn't have the time to blurt his dissatisfaction out, since wood branches grow out of Yamato's arm and moved towards him.

To this, his answer was to detach the fire mask beast and to let it breathe a firestorm out into Yamato's direction.

Of course, he didn't forget about Naruto and his threads smashed the wood wall which appeared, but Naruto was missing already.

He knew he should quickly locate Naruto, but the two clones needed his attention for a brief moment, so he focused on that and when the four "arms" hit them, they vanished with a smoke.

Then he noticed how Naruto was behind him jumping at him with a Rasengan: 'This must be the real one.'

Kakuzu moved all his threads back, used half of them to defend himself and the other half to catch Naruto.

Poof!

The Rasengan using Naruto vanished with a smoke.

'Shit - it was just another clone...where is the real one?' - Kakuzu tried to find the real Naruto before Yamato was finished dealing with his fire mask beast's attack.

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But he wasn't anywhere to be found.

At least until the fire attack of his mask stopped and he saw an entire army of Naruto taking cover under a giant wood umbrella which was burning because of the fire, but the fire was far from reaching the Naruto and they started simultaneously to rush out into the burned path left behind by the attack all while holding their hands together for some reason.

"More shadow-clones? After fooling me with that one clone, I expected something more..." - Kakuzu decided to just blow them away since the Naruto army was gathered in a line perfect for him to hit them all at once.

However before he could do that, the Narutos all stopped.

And then Narutos started to glow before all the light went into the farthest clone which was thrown towards Kakuzu by the other clones.

'I don't know what this is, but I can't get hit by that!' - Kakuzu's instincts screamed, so he used the Earth Release: Earth Spear technique plus all his threads to defend himself.

BOOM!!!

A giant blue explosion, somewhat resembling the Rasengan of course not refined as it and more just like a crude explosion, completely engulfed Kakuzu.

While defending himself and the real Naruto from the explosion, Yamato said: "That definitely was powerful...however it could have easily killed yourself if you messed it up...sigh if I knew what you were planning, I would have never agreed..."

What he was referring to was that Naruto accelerated Chakra through all his clones until it finally reached the last one which wouldn't be able to hold that power and would blow up.

If he didn't control his Chakra correctly during that and a clone close to him exploded instead, it would be disastrous.

However, since the Rasengan already was a technique that involved accelerating it wasn't something new to Naruto.

But to keep accelerating to such a degree that you couldn't control it anymore and then suddenly releasing it with a blast, Naruto never thought about it before - but that was what he copied from Eiji's signature Iai-technique.

Naruto looked at the explosion while smiling: "Hihihi, sorry...anyway I call it the Uzumaki Bomb!"

'What an awful name...' - Yamato rolled his eyes.

"!"

"Cough...cough...fucking shit...that destroyed 3 of my hearts..." - three mask beasts fell to the ground before disintegrating next to Kakuzu.

"It's not over...but you did well...let me take it from her-" - Yamato stopped midsentence.

"SHA!!" - Sakura managed was somehow above Kakuzu and only now did he notice here.

But it was too late and her fist smashed him into the ground.