Rasengan

The rogue ninja from Kumogakure immediately used the Body Flicker Technique to appear behind Hizashi Hyuga. The kunai in the rogue ninja's hand thrust forward, and he sneered, "Die!"

However, Hizashi instantly turned into a large wooden log.

"A Substitution Jutsu?" The rogue ninja from Kumogakure was momentarily stunned, and Shiyu's attack followed.

"Compound Ninjutsu: Wind-Fire-Earth Dragon Bullet Technique!"

The three elemental dragon bullet techniques merged together, creating magical elemental changes and an extremely terrifying power that rushed towards the rogue ninja from Kumogakure with lightning speed.

"Ah!!! Impossible!!" The rogue ninja from Kumogakure was greatly alarmed and roared in frustration, seemingly unwilling to accept it, but he no longer had time to dodge Shiyu's fierce attack.

In the end, he could only be hit by this powerful Compound Ninjutsu.

Shiyu's Compound Ninjutsu was terrifying; many buildings on the street were destroyed.

One must know that the Wind-Fire-Earth Dragon Bullet Technique, which fused three elements, already possessed the power of a Super A-Rank Ninjutsu. Even if the rogue ninja from Kumogakure's physique was incredibly strong, taking such a direct hit would absolutely have dire consequences.

"So strong," Nao and Kurenai said in surprise.

The rogue ninja from Kumogakure before them was a horrific sight, his body mangled beyond recognition. He was undoubtedly dead.

Shiyu felt a bit awkward. He hadn't expected this technique to be so powerful, and he had killed the enemy too soon. He apologized, "Teacher Hizashi, I'm sorry. I accidentally killed him before I could get any information."

"It's fine! He might not have talked even if we asked. You did well! Our most important task right now is to find our client, Mr. Noguchi," Hizashi said, unconcerned. He immediately activated his Byakugan.

"Byakugan!"

Veins bulged in Hizashi's eyes, and he quickly located Noguchi's position.

"It's in a cave not far to the northwest; Mr. Noguchi is being held there!" Hizashi and the other three quickly arrived.

The cave's entrance seemed very hidden, but with Hizashi's guidance, they easily entered.

"Are you alright, Mr. Noguchi!" Hizashi cut the ropes binding Noguchi with his kunai and asked.

"I'm fine. I'm sorry for getting you involved."

"The research data was stolen! The ninjas who stole the data seem to be rogue ninjas, not belonging to any country," Noguchi recalled.

"Not belonging to any country?" Hizashi pondered for a moment, thinking about where those who stole his data might go.

"Rogue ninjas?? If they're rogue ninjas, they wouldn't act together unless they're a group or taking orders from the same person!" Shiyu hit the nail on the head.

"But rogue ninjas wouldn't find my data useful. What for?" Noguchi was also puzzled.

"I know!" Shiyu immediately had a realization.

"There must be other ninja villages behind this. They can't use ninjas from their own country easily, as it would give them a bad reputation. No one wants to be the first to start a conflict and become the culprit of a Third Great Ninja War, so they disguise themselves or bribe rogue ninjas to carry out secret missions!" Shiyu made a bold explanation.

"That seems plausible. This guy might have something on him," Hizashi guessed.

"Hmm? There's something in his pocket!" Kakashi Nao pulled something out of his pocket.

"It's a letter! Fortunately, it's still legible!" Kakashi Nao began to read.

"The letter reads: Don't worry, I'll handle the Konoha rats. After the job is done, meet me in the Land of Hot Water, at the White Rose!"

"Land of Hot Water!" Everyone was shocked.

"The data was likely taken to the Land of Hot Water! That place is the Village of Forgotten Wars? What kind of power could be there?" Hizashi was very confused.

"Since we've come this far, no one wants to back out, right? Let's depart immediately!"

Then, Hizashi Hyuga, along with the squad and the client Noguchi, embarked on their mission to the Land of Hot Water once more.

They encountered no enemies during this journey, and Shiyu underwent some changes during the mission.

Firstly, Shiyu noticed his skin had become fairer, the horns on his head were growing longer, and he could feel his Chakra reserves skyrocketing.

Ninja strength can be categorized as: Genin, Chunin, Jonin, Quasi-Kage, Kage, Super Kage. Shiyu's current Chakra reserves were estimated to have reached the peak of an ordinary Kage-level.

Furthermore, due to Shiyu's extremely precise Chakra control, the efficiency of his Chakra utilization reached one hundred percent!

Therefore, he could continuously use the Body Flicker Technique and various powerful ninjutsu without any risk of Chakra depletion.

If the battle were to drag on, Shiyu's Chakra recovery speed would be a nightmare for any opponent.

On the road, besides learning and familiarizing himself with the ninjutsu he had previously copied, Shiyu also copied the Kumogakure rogue ninja's Lightning Style: Ground Rush and Lightning Style: Armor, mastering them. He now had some close-combat defensive ninjutsu.

But most importantly, Shiyu began practicing a new ninjutsu, the famous ultimate technique from Naruto—the Rasengan!

Although the Rasengan is only an A-Rank ninjutsu, it requires no hand seals, consumes less Chakra than Chidori, and can later evolve into various forms and elemental transformations, making it an extremely powerful ninjutsu. It can also fuse with elemental nature transformations, making it the most practical and promising close-range striking ninjutsu with the greatest development potential.

At this point in time, Minato Namikaze had seemingly not yet created the Rasengan.

"Minato, you can't blame me for this!"

As they traveled, Shiyu bought water balloons and rubber balls in the villages and towns they passed.

Shiyu's control and quality of Chakra naturally met the requirements, and the rest depended solely on diligent practice. While on the move, Shiyu controlled his Chakra to continuously rotate within the water balloon in his hand.

Shiyu easily burst the first water balloon, finding it no difficult at all. Next, he placed the rubber ball in his hand.

However, even with Shiyu's diligent efforts to control the Chakra's rotation, he still couldn't break the rubber ball. The rubber ball was far more difficult than the water balloon.

Shiyu finally understood that just having the Otsutsuki bloodline didn't mean one could instantly master all techniques. For techniques that don't require hand seals, if no one is there to copy from, one can only practice diligently on their own.

Every time he reached a critical moment, it ended in failure. Shiyu didn't get discouraged. If he could learn this technique so easily, it wouldn't be considered one of Naruto's cheat-like abilities!