When Dimensions Collide

The Hunter × Hunter world leaked life energy; this world leaked chakra.

In the Hunter × Hunter world, the leakage happened passively. In this world, it happened actively. If you didn't refine your excess chakra, there was nothing to leak.

"So, let's try again!"

Suifeng was a man of action. Once he had an idea, he naturally wanted to put it into practice. First, he had to refine chakra. That step couldn't be skipped, nor could he avoid it.

He already had plenty of chakra. In less than half an hour, he had reached his body's limit.

Once he hit the limit, any chakra he continued to extract began to leak away.

Suifeng closed his eyes, sensing the wisps of chakra drifting away as he tried to control them, but he failed.

Controlling chakra with nothing but his mind was difficult. This wasn't a world of superpowers where you could move objects with psychic energy. Mental interference with matter was an advanced ability in any world, and he wasn't there yet.

Even in the Hunter × Hunter world, unless they went through arduous training, those who tried to gain a Nen Ability by taking the shortcut of opening their aura nodes were all on the wrong path. Most of them died.

Gon and Killua? Come on, they were the protagonists, the children of destiny. Not everyone got to be born that lucky.

Faced with his chakra gradually dissipating, Suifeng wasn't in a hurry. He wasn't a child of destiny who could control the escaping chakra with his thoughts. He'd prepared for this. He was a ninja, after all, and he had chakra of his own.

His fingertip twitched. A wisp of chakra extended from it, turning into a gentle breeze that swept toward the chakra leaking away.

It was all Suifeng's chakra, with exactly the same properties, so there was no resistance at all. The next moment, Suifeng formed Hand Seals and performed a jutsu.

This wasn't a traditional jutsu, but one he'd developed himself to control chakra.

As it happened, he'd gathered a wealth of material on chakra control under the pretense of researching the Strength Enhancement Technique. He hadn't made much progress with the technique itself, but he'd gained a deeper understanding of chakra control. Then, combining that with the Ten's technique of Ko from the four major principles of Nen, he'd developed this jutsu.

Of course, that was also because the principle behind it was very simple: release your chakra, make it circle around you, and use that rotating chakra to scoop up and merge with the chakra leaking from your body. It was like rolling a snowball—the more it rolled, the bigger it got. It was basically an external Yin Seal wrapped around his body!

Impressive? Awesome? Brilliant? Powerful?

Bullshit!

At first, the jutsu worked wonderfully. It could store chakra perfectly. But it was still an external cycle, not true storage. Once it reached a certain amount, it couldn't draw in any more.

That was right. A small amount of chakra could be made to circulate freely with this technique, but once the amount grew to about a quarter of the chakra limit inside his body, he had to devote some attention to controlling it. At half his limit, it was like performing a jutsu that consumed half his chakra. Any more, and he couldn't control it.

Control had its limits, too.

If it were really this simple, then any elite jonin with good chakra control could do what he did, even without knowing the principles of Nen. They might not manage it as precisely, but they could still do it.

There was another huge drawback to this method. Even if you could control the chakra freely, it would gather around you in ever greater amounts as time passed. You'd become a chakra torch, unable to do anything else.

So this was only the first step. The second was sealing the chakra away. Tsunade used the Yin Seal, but Suifeng had an advantage of his own: there was a hole in his brain.

The complete system of Nen was inside that hole. Through it, he had a general idea of how to control chakra released outside his body. That was the first requirement.

The second prerequisite was that he knew a chakra aggregate called a Tailed Beast existed in this world.

The third was that he'd learned the Shadow Clone Technique.

The Shadow Clone Technique was a B-rank jutsu developed by the Second Hokage. It used chakra to create tangible clones that could move and fight just like the user, with consciousness independent of the user's body. When dispelled normally, the clone's memories and experience returned to the original.

After learning the technique, Suifeng had done nothing but shout, "MMP!" before surrendering completely to its brilliance.

It didn't just divide chakra. It divided consciousness, too.

He'd learned it, but he didn't know how it worked. Still, everyone who tried it swore by it.

Why had his Iron Body improved so quickly, and why had he achieved results so fast? Because he'd learned the Shadow Clone Technique and had a Shadow Clone beat him with a stick. That was how he'd made progress.

Now, Shadow Clones had another important use. At their core, they were aggregates of chakra, and the chakra they used came from his own body, so there was no problem with rejection.

A Shadow Clone's consciousness came from him, and it could also perform jutsu. That meant he could use a Shadow Clone as a link between himself and the chakra released outside his body, controlling that chakra through the clone.

All the techniques described so far belonged to the Ninja World. Any ninja with strong enough chakra control could probably manage it after a little research, if they had the idea.

The techniques that followed were greetings from another dimension!

He created a Shadow Clone, which immediately began forming Hand Seals and took control of the chakra scattered outside. Then it began a series of outrageous maneuvers.

Ten, Zetsu, Gyo.

Ten stabilized the chakra, wrapping it around the clone's body.

Zetsu tightened the chakra, slowly drawing it into the clone's body. Note that a Shadow Clone was already an aggregate of chakra, so this action joined it to the chakra released outside.

Gyo gathered the released chakra at the center of the Shadow Clone.

A wondrous transformation began.

A tiny black dot, no bigger than a needle's point, appeared on the Shadow Clone's chest. It slowly expanded, reaching the size of a soybean in moments. As it continued to grow and absorb chakra, the black dot gradually took shape, becoming a slowly rotating chakra vortex.

When the vortex had grown to half the Shadow Clone's size, Suifeng's clone formed Hand Seals. The chakra around it first expanded, then abruptly compressed inward and collapsed!

Ko: an advanced application that combined Ten, Zetsu, Ren, Hatsu, and Gyo.

Using Ko, he concentrated all the chakra at once and blasted the center of the chakra vortex!

Boom!

The Shadow Clone vanished, and its consciousness returned to the original.

The moment his consciousness returned, the blast had already landed.

The chakra vortex began to contract rapidly, and at the same time, Suifeng sensed a connection between his consciousness and the rapidly shrinking vortex.

"It worked!" His brows finally lifted with delight.

By then, all the chakra that had leaked away had been absorbed by the vortex before him, and the blast was complete. A half-solid, half-illusory sphere, about the size of a pigeon's egg, floated there, chakra slowly flowing across its surface like a nebula.

He raised his hand, and the sphere, turning slowly in the air like a swirling nebula, drifted down to hover above his palm.

It was a novel feeling. At that moment, the chakra vortex seemed like a part of his body, as easy to control as his own limbs.

Looking closely, he saw that at the center of the sphere, the chakra was still slowly rotating in a particular direction, forming a small vortex. It was an aggregate of his chakra, but it wasn't a Shadow Clone.

It was a seed he'd created by using a Shadow Clone as a medium and combining the knowledge of two worlds.

However, the jutsu wasn't complete yet. This was only a seed. He needed to keep supplying it with his chakra and infuse it with his will before it could fully take shape.

For now, it was like an external Yin Seal, capable of storing excess chakra and letting him call on it whenever he wanted.

But would a single Yin Seal satisfy him? Of course not. He had even greater ambitions.

"Since it's also an aggregate of chakra, could I make something like a Tailed Beast? No, Tailed Beasts have consciousness, and theirs didn't appear out of nowhere. It came from the Ten-Tails. A Shadow Clone's consciousness comes from the original's reflection, so simply gathering chakra can't create a Tailed Beast. But what if I infused it with my will and used the method for creating a Nen Beast?!"