Fujin quickly analyzed his Shadow Clone's memories. He let out a sigh at the questions that his clone had wondered about. Unfortunately, he wasn't strong enough yet to resolve those mysteries. Though they weren't as miraculous as his transmigration, they were still concepts beyond his current strength. However, unlike his transmigration, Fujin was hopeful that he would figure out these mysteries in the future.

He quickly removed those thoughts from his head and focused on the Flying Thunder God jutsu. He let out a sigh and muttered, "I had a feeling that I would experience a breakthrough only two weeks after I began practicing the third step.

To think that I would need another month of training to actually achieve that breakthrough! And, that is when I kept training with 15 Shadow Clones. That is equivalent to training for 16 months. No wonder such a technique didn't exist before Shadow Clone jutsu was created. Who'd spend so much time on this while your clan was constantly at war?"

Having analyzed the information, Fujin dispelled his Shadow Clones. All their experience and analysis poured into Fujin's brain. He spent a few minutes getting his thoughts together.

He analyzed, 'The first two steps to learn the Flying Thunder God were straightforward. However, the third step is quite complicated. In fact, it is further divided into four more steps.

The first step is to sense the Dimensional Void and send my chakra into it. Sensing my markings from the Dimensional Void is also a part of this step. It took me a month and a half to complete this step.

The second step is to transport a jutsu through the Dimensional Void. Unfortunately, only the jutsus where chakra is concentrated can be transported through the Dimensional Void. Jutsus like Infinite Breakthrough jutsu will directly collapse in the Dimensional Void.

The reason for this should be the intense pressure my clone felt. I will have to add a layer of chakra coating to my jutsus for them to maintain their forms while transporting through the void. Now that I think about it, Rasengan and its elemental forms will be perfect for travelling through the Dimensional Void. They are made purely of chakra and hence don't need any such layer of protection.

Once I become comfortable with this step, I'll be able to teleport Rasengan with the help of the Flying Thunder God jutsu. I wonder if this was one of the reasons why Minato created the Rasengan.

Still, this second step is just so that I can get used to moving Space-Time teleportation. It isn't practical to sneak jutsus through this for several reasons. For starters, most jutsus can't travel through the Dimensional Void. And more importantly, momentum isn't conserved during this teleportation.

So if I randomly send a jutsu to one of my markings, the jutsu will just collapse or explode on reaching the marking. Sigh, this shatters my dream of firing Vacuum Bullets through these markings. How cool would that have been

The only way this would be useful is if someone is carrying something with my marking or is directly marked by me. In that case, I can just create Rasengan, teleport it to that marking, have it explode on their body and just keep spamming it until they die.

Hmm, I wonder if the Rinnegan can absorb ninjutsus instinctively If not, I can even kill Nagato if I am able to mark his real body. Only Obito might be tough to deal with as I am not sure if I can sense the markings in his Kamui Dimension. Perhaps I could cooperate with Kakashi and have a few Shadow Clones active in that dimension to attack him once he is marked. Sigh, that bastard is so difficult to kill.

That said, the biggest advantage of this step is probably defense. I can just send any attacks coming at me into the Dimensional Void. It doesn't matter if those attacks can survive in the Dimensional Void or not, I will stay safe. Though it takes some chakra to transport attacks here, the chakra needed is just a fraction of what is needed to form jutsus. Unless my opponent is a Tailed Beast or a Jinchuriki, I won't have to worry about running out of chakra.

The best part is that if I have already marked my enemy and he attacks me with a jutsu that I can transport through the Dimensional Void, then I can hurt or kill them with their own attacks! Hehe, if I become capable of teleporting a Tailed Beast Bomb, it'd be hilarious if I teleport it back to the Tailed Beast's body. That would be fun to watch, haha.

Anyway, once I am comfortable with this second step, I can move on to the third step, which is having my Shadow Clones teleport through the Dimensional Void. Until my Shadow Clones can teleport with 100% accuracy for a month, I shouldn't try it with my real body. Only after a month of experimentation with no problem, I can try the fourth step, which is doing it with my main body.

At that point, this technique can be considered as successfully learnt. I will only have to improve it further by increasing the range up to where I can sense my markings and the range of teleporting as well. Being able to teleport across countries Sigh, that will take some time. However, it should be doable considering that even those three could do so. After all, Mei was quite far away from the battlefield that Madara was on and they still managed to sense the marking and send her there.'

Fujin looked around in his basement. He analyzed, 'Though I do have a lot of seals here, I doubt they can endure a barrage of Rasengan. I will need to increase the protection.'

Fujin made the confrontation hand seal. Immediately, several seals on the walls and pillars began glowing. One shadow clone appeared next to Fujin. He moved to the center of the basement and sat there. Immediately, several seals appeared on the floor and the ceiling with the Shadow Clone at the center. Immediately, a barrier appeared and covered the walls, pillars, floor and ceiling in the basement. With the barrier, Fujin no longer had any worries.

Fujin created a new set of Shadow Clones to assist him in training. All of them began trying to teleport a Rasengan to the markings in front of them.

All their attempts were unsuccessful as Fujin wasn't used to Dimensional Void yet. Only a small amount of chakra reached the markings, causing a series of small explosions in the basement. Fortunately, the barrier ensured that his house was undamaged. Unfortunately, Fujin overlooked one important factor.

Fujin dispelled his clones as his breathing became heavy. He cursed, 'Shit! I forgot that my chakra reserves won't be able to sustain a continuous barrage of Rasengan! Not to mention, keeping the barrier up while enduring a barrage of small explosions burned the clone's chakra rapidly as well. I'm already empty.'

There was no helping it. Even Naruto wouldn't be able to sustain a Rasengan Barrage for more than a few minutes unless Kurama provides him with his chakra continuously. For Fujin, sustaining it for even a few minutes with 15 Shadow Clones was too difficult. Even more so when the Rasengan had to be sent to the Dimensional Void since that required chakra as well.

Fujin sighed and decided, 'I guess I have to stick to the Wind Explosion Sphere. It'll be a lot harder to do than the Rasengan. But it won't be very chakra exhaustive and I won't need to use a barrier as the normal strengthening seals should be sufficient to shrug off the damage due to some winds.'

Fujin took a break and continued his training once his chakra had recovered. Even though Wind Explosion Sphere consumed just a fraction of the chakra as compared to Rasengan, it still burned Fujin's chakra very quickly. As such, his speed of training the Flying Thunder God jutsu slowed.

However, his progress with the Gate of Healing was steady. Three days later, he managed to open the Gate of Healing for the first time!