I Punch the Tailed Beast Ball

"Activate your Color of Arms Haki," after their training session, Nagasawa, who had been practicing on a massive rock, appeared next to Kakashi and the others.

Although Kakashi and the rest didn't know what Nagasawa had in mind, they quickly activated their Color of Arms Haki. Some covered their arms, while others covered their legs.

Nagasawa touched their Color of Arms Haki with his hand and sensed it for a while.

Color of Arms Haki was an innate potential power that all humans in the One Piece Universe possessed. This power allowed them to transform their willpower into a weapon by manipulating invisible sensations such as aura, killing intent, and fighting spirit.

Originally, people in Naruto Universe could not possess the potential to awaken Color of Arms Haki and develop it through training. However, because of the system and Whitebeard's template, Nagasawa could grant others the potential to awaken Color of Arms Haki.

When this potential met individuals with Chakra like Kakashi and the others, a strange event occurred. Color of Arms Haki became powered by Chakra, and its strength varied depending on the Chakra used to power it.

But, despite this change, the fundamental characteristics of Color of Arms Haki remained. Going through battles would make it stronger.

Maybe it was because Nagasawa's Color of Arms Haki was acquired through Whitebeard template, but his Color of Arms Haki remained authentic, with no connection to Chakra.

And maybe it was because Kakashi and the others weren't particularly powerful that this change didn't exhibit any extraordinary effects, and Nagasawa simply overlooked it, thinking it was simply more suitable for Shinobi to learn this different version of Color of Arms Haki.

However, after participating in the Fourth Shinobi World War, Nagasawa realized that his Color of Arms Haki was a bit lacking. If his Color of Arms Haki could be linked to Chakra, there was a chance that the system could unify all his powers, leading to a significant improvement in strength. If it did, at least he wouldn't have to fear Six Paths Sage Mode.

Nagasawa knew how much he struggled against Obito and Madara once they attained Sage of Six Paths' power with only a sword that he imbued with his Color of Arms Haki, especially against Madara.

"Kakashi, use your Armed Raikiri," Nagasawa said after some thought.

Kakashi nodded. After finishing the Nature and Shape Transformation, Kakashi imbued the blue lightning on his hand with Color of Arms Haki. 

Nagasawa sensed it and nodded, saying, "That will do."

Kakashi then lowered his arm and put away the Armed Raikiri.

"You may resume your break," Nagasawa said before leaping onto a boulder, preparing to experiment.

"Captain Nagasawa's actions are truly puzzling," Midori Inuzuka said with a perplexed expression as she patted her partner, Ashimaru.

Not too long ago, Nagasawa had cut a massive boulder on the mountain and brought it to this training ground, which had alarmed quite a few people.

After all, a massive boulder over a hundred meters high suddenly flew towards Konoha.

"Captain Nagasawa must have a good reason for doing this," Might Guy said solemnly, as if it were a serious matter.

"Maybe he's checking the progress of our Color of Arms Haki's training?" Ensui said doubtfully.

"Perhaps," Kakashi replied casually, not bothering to speculate on Nagasawa's intentions. After all, he didn't do anything to harm them, so why waste energy dwelling about it?

Maybe he was just bored?

After all, what was there to speculate from someone who suddenly moved a hundred-meter boulder towards Konoha.

Nagasawa, who was seriously studying the combination of Color of Arms Haki and Chakra, paid no attention to his disciples' complaints.

He believed that fusing Color of Arms Haki and Chakra should not be too difficult.

In theory, since Whitebeard template had completely integrated into his body, he possessed both the potential for Color of Arms Haki and Chakra. However, because his Color of Arms Haki had already reached a considerably high level before the fusion, it didn't exhibit the same changes as it did for Kakashi and the others.

Nagasawa closed his eyes and carefully stimulated the fusion of Chakra and Color of Arms Haki.

An hour later, Nagasawa opened his eyes, stood up, and released his Chakra. The black Color of Arms Haki instantly covered his entire body.

"This power isn't as difficult as I imagined," Nagasawa smirked.

Moreover, this fusion wasn't limited to Color of Arms Haki; it encompassed the entire Haki.

"It's a pity that there's no one in the current Shinobi World who will challenge me," Nagasawa muttered.

He genuinely wanted to test the strength of the new Color of Arms Haki enhanced by Chakra. He wasn't saying this to show off, as even without Sage Mode, Supernova Mode, or Radiant Sun Mode, he was basically invincible, just slightly below Six Paths-level.

It was even possible that he was stronger than the first Five Kage, who established the Hidden Villages during the chaotic times. 

Currently, the only person in the Shinobi World who might be able to offer him a decent fight was Nagato, who hadn't fully awakened his Rinnegan yet.

The power of the Rinnegan was too overwhelming, and it wasn't something Nagato could handle since it wasn't his in the first place. As a result, every time he used it would shorten his lifespan even though he was an Uzumaki.

Even Obito only implanted one Rinnegan. After all, he still needed Kamui, and on top of that, he couldn't handle both Rinnegan as it put too much strain on his body.

"He's not like most villains who had nothing to do and end up trying to create opponents for themselves.

For Nagasawa, being invincible is the best case scenario. That way he didn't have to spend all his energy thinking about how to make Konoha stronger to improve his strength anymore.

He could also spend more time with Nono, and do whatever he liked.

He could also act like a retired leader, giving speeches all over to let people know the great contributions he made for Konoha.

If he gets bored, he could take on some disciples and train them.

The former antagonist, Itachi Uchiha, who could intimidate others with just a glare, now throws marbles at people, which was quite amusing.

Unfortunately, he still couldn't be considered completely invincible. While there are no powerful enemies at the moment, potential threats remained.

He was mainly concerned about Otsutsuki Clan, which could come at any time.

A Clan full of Six Paths-level combatants was just too terrifying. Who knew how powerful the Clan's higher brass and even the patriarch were?

The thought of it motivated Nagasawa to study Sage Mode more seriously. Regardless of how strong Otsutsuki Clan was, he had to defeat Kaguya first in Tobirama's Challenge Mission.