Fujin thought for a bit and answered, "I can't be sure. No major village will make a move until the civil war in Kirigakure is over. As for the organization that is capturing the Tailed Beasts, they are lying low as well and doing their job secretly. However, that might change once they capture more Tailed Beasts.

Once that happens, the ninja villages will react and I can't calculate what will happen. Considering the seriousness of the matter, I might not be allowed to take time off to train until the issue is resolved. And, as I am right now, I have no confidence in taking on the Tailed Beasts. If my estimates are right, then nothing big should happen within the next couple of years unless someone goes crazy. However, a big war will break out soon. I guess it'll happen in 3-4 years."

This time, Fujin's words weren't entirely true. He wasn't really afraid of the Tailed Beasts. The only thing that he was afraid of about the Tailed Beasts was the Tailed Beast Bomb. It was true that as of now he didn't have any counter against it.

However, once the range of the Flying Thunder God increases, he can dodge them with ease. In fact, once he became more efficient at the jutsu, he could even transfer an incoming Tailed Beast Bomb into the Void Dimension. That said, he couldn't do that at that moment. As a result, his words were true in a sense and Ryu didn't feel any lies in Fujin's words.

Ryu thought for a bit and said, "Alright. If nothing drastic happens, then I'll teach you how to harness Nature Energy in two and a half years. If you think that the war will happen before that, then I'll teach it to you earlier. That said, remember that I'm asking you to wait only so that you have a better chance of learning how to harness Nature Energy. So, don't try making any reasons to learn it earlier if there is no need for it."

Fujin nodded and said with a smile, "Alright. I am fine with that. Don't worry, I won't insist on it unless a war is close and inevitable."

Ryu nodded and said, "Good. Keep up your training. You'll have to work much harder if you want to try it in just 2 and a half years."

Fujin said, "Of course. I'll be staying here for a while though. I need space to practice a new jutsu."

Ryu replied, "Sure. Kaito will be with you while you are here."

Kaito said, "I had already agreed, Father. Let's go, Fujin."

Fujin nodded and flickered onto his back. Kaito and Fujin quickly left, leaving Ryu alone who was in deep thought. He wondered, 'A Great War I wonder if the prophecy has anything to do with it.'

He thought for a bit before concluding, 'Probably not. Humans have a strange fascination with war. Even back then, they would always be at war with some clan or other. And now, they have even involved the Tailed Beasts in their wars. Sigh'

Ryu had no interest in humans or their wars. As long as one of their summoners managed to learn Senjutsu, he couldn't care if every other human died.

Kaito flew over to a nearby peak that didn't have anyone living in it apart from some ordinary wildlife. Kaito asked, "Will this peak do?"

Fujin answered, "Yes, but there is no need to be on the peak. Fly down below where we may get more space to train."

Kaito said, "Alright. Let me know when you find a suitable spot."

Kaito dived down. Soon, Fujin noticed a spot that would be ideal for training. On his instruction, Kaito landed there. Fujin got off his back. Kaito asked, "Do you need my help in the training?"

Fujin said, "Not really."

Fujin took out a soldier pill and consumed it before adding, "I'll be training for 5 days straight. However, I'll need to rest for a couple of days after that. I'll need you to watch me over that period in case any incident happens. That said, there's no compulsion. I can just return to the village and ask you to reverse summon me if you have something else to do."

Kaito thought for a bit and said, "I'll keep watch."

He yawned and added, "I spent a lot of time flying around the world in the past few months. I was planning to take a break. Might as well watch you train and keep myself entertained."

Fujin smiled and said, "Suit yourself."

Fujin stretched his muscles and wondered, 'Now, how should I go about learning the Rasenshuriken?'

He thought for a bit before deciding, 'The amount of Wind Chakra needed for Wind Release: Rasengan is lesser as compared to the Rasenshuriken. Trying to create it without Shadow Clones will be difficult. I'll have 2 clones training together to learn this jutsu. Once they can perform it consistently, I'll have Shadow Clones try and create it without any help.

That said, one thing I realized in the 5 days I trained this jutsu is that I don't need to stick to just the Rasenshuriken that I remember. While the jutsu is perversely strong, there should be other methods to apply Wind Chakra to Rasengan. I can apply my own twists to the jutsu, creating unique effects that might be quite useful in combat.'

Six Shadow Clones appeared next to Fujin. 4 of them had 10% of his chakra while the remaining two had 20% of his chakra. The two clones with 20% chakra went away alone, while the ones with 10% chakra moved away in pairs.

As for Fujin, he began doing what he did whenever he stayed in a new place

Kaito didn't have any interest in seeing Fujin apply seals. Instead, he was attracted by the intense chakra he was feeling from the Shadow Clones. He flew to a spot that would allow him to watch all the Shadow Clones.

His eyes first landed on the Shadow Clones in pairs. He saw one clone making the Rasengan and the other infusing wind chakra into it. His eyes widened as he saw how intense the jutsu was. He muttered to himself, 'Such a concentrated and intense jutsu. I don't think that even Father would be able to endure such an attack. No wonder he said his body isn't able to handle the backlash'

He turned his eyes towards the two clones training by themselves. Just like the ones in pairs, they formed a Rasengan as well. However, instead of infusing wind chakra into the Rasengan, they were releasing a lot of wind chakra under the Rasengan.

One of the clones was satisfied with his creation and aimed his right hand in front of him. The Rasengan on his palm was separated by a layer of Wind Chakra. Suddenly, the winds blasted, sending the Rasengan flying for around 5 meters before it exploded.

The clone smiled and analyzed, 'Good! This idea works. I thought of this idea while trying to create the Rasenshuriken. It uses the principles of Assassin's Rush and Wind Laser jutsus instead of infusing wind chakra directly into the Rasengan. With the help of this wind blast, I should be able to send the Rasengan flying away at a fast speed. I'll call this attack Rasengan Cannon.

Unlike my Vacuum jutsus, from which enemies are mostly safe if they barely dodge it, with Rasengan, they'll need to also dodge the area of the explosion. I should try to use this method with Vacuum Trap Ball and later Rasenshuriken as well. It will be a great variation to have. In fact, with the Rasenshuriken, I could apply in a lot of different ways if I can control the wind chakra within the jutsu.'

The clone immediately got back to training. While the idea was good, he could only send the Rasengan flying for 5 meters as of then. The speed wasn't very impressive either. Fujin would need to train a lot to make his ideas a reality.

While Fujin's clones were training, Fujin was done with applying the seals. He took out the Blade of the Thunder Spirit and muttered, "Now, let me see what all you can do."