For the third time, Fujin gathered chakra and created a large vacuum core in his mouth. This time, there were only 9 smaller cores inside the larger core. However, each of these 9 cores was double the size of the vacuum bullet cores.

'Wind Release: Vacuum Cannon Barrage'

Fujin shot out the jutsu. It split into 9 Vacuum Cannons, travelling in a straight line! Each Vacuum Cannon drilled 20 meters into the ground, before being slowed down enough for the Vacuum Cannon behind it to catch up and continue the destruction. In less than a second, a 187-meter-deep hole formed in the ground!

A smile formed on Fujin's face. He thought, 'In terms of penetrative power, this is indeed my strongest jutsu. Unfortunately, it isn't very practical in combat. No top-level ninja will be stupid enough to stay in the path of this jutsu. It'll only work on someone who is extremely overconfident in his defense and dodge as soon as I shoot the jutsu.

Another usage of this jutsu will be killing those who stay hidden deep underground to be safe from my Vacuum jutsus. Though it is possible to travel deeper than 200 meters underground, it is not something that is commonly done and not something most ninjas would have tried before. Going more than 25 meters underground itself is extremely rare. As long as I kill everyone who tries to hide underground from my attacks and don't let the knowledge spread, this will be a sure shot method to kill my enemies who think that underground is safe.'

Fujin extended his hands and fingers towards the ground. A vacuum core began forming in front of each of his fingers. 15 smaller vacuum cores were created inside each of the 10 bigger vacuum cores. The cores were soon covered with wind chakra.

'Wind Release: Vacuum Infinite Gatling jutsu'

Unlike the previous three jutsus, Fujin didn't shoot out the jutsu. Instead, the smaller vacuum bullets inside the 10 cores were launched. In a second, 15 rounds of Vacuum Gatling were launched. In all, 150 bullets hit the ground, creating 150 new holes in the ground.

Fujin thought, 'This jutsu was a surprise. I was initially not very interested in applying this technique to Vacuum Gatling. After all, it sacrifices the most important aspect of the jutsu for which I had created the Vacuum Gatling jutsu.

The Vacuum Infinite Gatling takes quite a long to create as compared to the Vacuum Gatling. I can't catch even a normal Jounin by surprise with this. However, it instead allows me to shoot a ridiculous amount of Vacuum Bullets, justifying its name.

So, even though the enemy will see it coming, dodging it won't be an easy task. If I had this jutsu when Kitsuchi ambushed me with those Iwa Jounins, I would have slaughtered all of them in a few breaths.'

Vacuum Infinite Gatling was a jutsu that surprised Fujin. He didn't have such great expectations from it. He was very pleased. Fujin extended his right hand and stretched his palm. He was about to try the fifth and the last Vacuum jutsu he had created and mastered in the last week.

Though Fujin had created several types of Vacuum cores, the overall volume of each core would be quite low. However, the next jutsu was an exception. The vacuum core that formed in front of his palm was as big as a Rasengan.

Since its size was the largest by a huge distance, the amount of vacuum cores it could contain was also the highest by a huge margin. A total of 729 vacuum cores formed inside the large vacuum core. Of course, creating so many vacuum cores took a long time as well and consumed a lot of Fujin's chakra.

Fujin's wind chakra engulfed the vacuum core and began spinning around it rapidly, increasing its size further.

'Wind Release: Vacuum Trap Ball'

Fujin released the ball while gathering chakra on his feet. It travelled to the center of the ground trapped between the four ramparts. The ball suddenly crumbled and Vacuum Blades were launched in every direction at a blinding speed!

A staggering 729 Vacuum Blades were launched from the Vacuum Trap Ball! More importantly, Fujin had no control over any of the Vacuum Blades. Some Vacuum Blades hit the ground creating more scars on the ground, some hit the four ramparts surrounding the ground causing all of them to collapse, some flew into the sky and killed a couple of unlucky birds and dispersed after travelling a long distance.

One Vacuum Blade also flew to exactly where Fujin was standing. Fortunately, he was prepared ever since he almost lost his life when he tried the jutsu the first time! He immediately moved to his left as the Vacuum Blade flew past his previous location. However, soon after, he had to jump because the rampart he was standing on collapsed.

As he landed on the ground and was engulfed in dust, Fujin thought, 'I didn't think applying this technique to the Vacuum Blade jutsu in this manner would result in such a ridiculous result. I'd have named it the Vacuum Big Bang jutsu if I could control the Vacuum Blades inside it.

Anyway, for the time being, this name suits it perfectly. Who'd expect that small ball to create such devastation? The core of Vacuum Blade is quite similar to the core of Vacuum Wave. It is flexible in shape.

As a result, I could create elongated cores which kept coiling around the center in the larger Vacuum Core. Since the core is outside my body, I don't need to be considerate about its size. Due to these two factors, I could fit in a ridiculous amount of vacuum cores inside it.

That said, though the jutsu is very strong, it does have a few limitations. The speed of the jutsu before it explodes and unleashes the Vacuum Blades isn't fast enough. If someone is alarmed and moves a long distance away, then they can dodge it just like I did.

Another issue is the amount of time needed to create it. My enemy will have a chance to attack me multiple times while I am creating it. Fortunately, I can move around freely while creating it. Another issue is that I can be hit by the jutsu as well, meaning that I can't let it explode very close to me.

Of course, in a battle, using this level of jutsu isn't practical. If I fail to hit, then the amount of chakra wastage would be unjustified as well. The only way I can use it is by reducing the number of vacuum cores inside it significantly.

The real usage of this jutsu is using it as a suicide attack or a trap. If my clones use this jutsu like a Rasengan and try to slam it into my enemy, he will be dead even if he defends or barely dodges the ball.

Another possible usage is using it like a trap. Though I can't control the Vacuum Blades after the ball explodes, the ball itself is very stable. If I can seal the ball and store it stably, then it can become a deadly trap.'

A mischievous grin appeared on Fujin's face as he thought, 'Imagine if someone broke into my house. They'll first have to worry about the ridiculous amount of seals there. And if they somehow make it inside, they'll be welcomed by a few hundred or a few thousand Vacuum Blades.'

The thought made Fujin chuckle. He thought, 'Unfortunately, it would also destroy my house. So it is better to avoid it. That said, bases outside the village are a fair game. After all, I can build as many as I want. It only takes a little bit of time. If I can succeed in sealing this jutsu, then it'll be a good trap against any invaders.'

Fujin took a deep breath and took a look at the collapsed ramparts. The training ground was a mess once again. Fujin thought, 'It's time to switch my attention back to Flying Thunder God. I also need to analyze those two curse seals that Danzo uses on Root ninjas and need to create my own curse seal.'

Fujin sighed and thought, 'It's been a long time since I have been working on Flying Thunder God jutsu. It's time to completely master it. Until I'm done, I won't be taking any missions or doing any task that will require a lot of time!'

Fujin resolved himself. He fixed the training ground, creating the four large ramparts once again for future training. Once he was done, he focused entirely on his training, detaching himself from the other happenings in the ninja world!