Having developed to this stage, Namikaze Minato had already planned the path for further development.
Currently, Namikaze Minato had mastered four types of Chakra nature changes, among which the Yin attribute was a special Chakra nature change. Namikaze Minato didn't plan on developing the Rasengan with the Yin attribute for the time being.
He mainly considered the three major natures of wind, fire, and lightning.
"To make the Chakra ball stable and powerful, the two most important points are compression and the direction of Chakra flow. Enough Chakra compression can enhance penetration power, while operating Chakra in different directions can enhance the stability of the Rasengan," Mokgetsu explained the core points of the Rasengan to Namikaze Minato.
After speaking, Mokgetsu extended his right hand and began to condense Chakra in the palm of his hand.
Streams of Chakra spun rapidly in different directions on Mokgetsu's hand to form a head-sized Chakra ball, which was then compressed into a Chakra ball slightly larger than a palm under Mokgetsu's control.
After hearing Mokgetsu's explanation, Minato thoughtfully extended his hand. Soon, a head-sized Chakra ball appeared on his palm, and it continued to shrink.
Finally, Namikaze Minato slammed his hand to the ground, and with a loud bang, a large pit appeared beneath him.
"Thank you, Mokgetsu," Namikaze Minato sincerely thanked Mokgetsu.
This no-seal jutsu, so quick to use like the Rasengan, was very important to him. Without Mokgetsu, he didn't know how much time he would have spent completing the development.
"Mokgetsu, what name did you give this ninjutsu?" Namikaze Minato couldn't help but ask.
The idea for this ninjutsu was initially proposed by him, but it was Mokgetsu who completed it first, so Namikaze Minato felt that Mokgetsu also had the right to name it.
"What do you think would be a good name, Minato?" Mokgetsu shook his head, indicating he hadn't named it, and then asked.
He was a bit curious about what odd name Namikaze Minato might think of.
Namikaze Minato rested his chin on his fist, showing a pondering look. Then his eyes lit up as if hit by a brilliant idea, and he confidently said:
"Mokgetsu-Inspired Earth-Pounding Test Explosion Pill!"
Mokgetsu's lips twitched uncontrollably, still as abstract as ever.
"Why don't you go back and ask Kushina if she has any good ideas?" Mokgetsu suggested tactfully.
He thought it would be better not to let Namikaze Minato name it. Otherwise, if such a good ninjutsu were looked down upon because of its name, it would be too pitiful.
"Mokgetsu, do you think the name is bad?" Namikaze Minato asked somewhat unwillingly.
He felt his name was pretty good, it explained the origin and sounded quite cool.
"It's not very good, you can consider everyone's opinions more." Seeing Namikaze Minato so confident, Mokgetsu couldn't bear to be too harsh.
Namikaze Minato finally had to go back to Kushina disappointed.
However, he was still somewhat reluctant to give up.
"Kushina, I just developed a new ninjutsu. Can you give me some advice on the name I came up with?" Minato asked tentatively.
"Minato, you naming it? It must be long and lame," Kushina said bluntly.
Namikaze Minato's naming taste was almost inversely proportional to Namikaze Minato's appearance and character, Kushina was speechless. How could anyone name a ninjutsu Spiralling Flash Super Round Dance Howl Style Three, which makes no sense at all?
Yet Namikaze Minato still felt good about it, unstoppable.
"This time it's different. I feel really good about it, both in terms of style and deeper meaning," Namikaze Minato hurriedly explained.
"Then let's hear it," Kushina decided to temporarily believe Namikaze Minato.
Minato gathered Chakra in his palm, and a Chakra ball quickly formed in his hand.
"Hey, this ninjutsu looks a bit like a Tailed Beast Ball." As the Nine-tailed Jinchuriki, Kushina immediately felt that Minato's ninjutsu was not simple.
"The initial inspiration for developing this ninjutsu was the Jinchuriki's Tailed Beast Ball," Namikaze Minato briefly mentioned his battle in the Hidden Rock Battlefield.
"Mokgetsu-Inspired Earth-Pounding Test Explosion Pill!"
After the explanation, Namikaze Minato confidently and energetically shouted the name of the ninjutsu.
Kushina couldn't hold it in anymore. What kind of name was this, even including Mokgetsu's name?
"So long, and so tacky," Kushina commented speechlessly.
Namikaze Minato looked downcast, not understanding why such a good name didn't get approve from Mokgetsu or Kushina.
...
Afternoon, Southern Border Forest.
After training in swordsmanship for two hours, Kakashi sat down to rest and called over the frolicking Rockruff.
"Rock! Rock!"
Hearing Kakashi's call, Rockruff was extremely excited, wagging its big tail and circling around Kakashi, looking very energetic.
Kakashi couldn't help but smile and patted Rockruff on the head.
But just then, Kakashi noticed a problem: Rockruff's paws were covered in sand.
"Strange, where did the sand come from in the Southern Border Forest? Did it run to the park to play?" Kakashi began to ponder.
Then Kakashi shook his head, they were deep within the Southern Border Forest, and the nearest park was quite far away. Rockruff, being so obedient, surely wouldn't have run there alone.
"Rockruff, where did the sand on your paws come from?" Kakashi decided to directly ask Rockruff.
Rockruff displayed high intelligence, able to understand his words, though it couldn't speak.
"Rock!"
Hearing Kakashi's words, Rockruff gathered Chakra to perform nature transformation, thrust its paw into the ground and pushed. Under the effect of Earth Attribute Chakra Nature Changes, the earth transformed into sand and was thrown forward by Rockruff.
Kakashi was stunned, what the heck, how many days has it been since it was born, and Rockruff had already mastered Earth Attribute Chakra Nature Changes on its own.
Kakashi knew Rockruff could use Chakra, because when Obito annoyingly taunted it, Rockruff would use Chakra to protect itself.
But Kakashi didn't expect Rockruff could even comprehend nature transformation on its own.
This gave Kakashi a sense of inferiority, as some ninja only began training in nature changes at twelve, while Rockruff comprehended Earth Attribute Chakra nature transformation less than a month after being born.
After performing Sand Attack, Rockruff looked at Kakashi with a hopeful expression, seeking praise.
"Amazing, I feel like soon you'll be able to help me in battles," Kakashi generously praised.
"Rock."
Rockruff, displaying joy, nuzzled its head against Kakashi's leg.
"Hmph, it's just some Sand Attack, my ninja beast will definitely be stronger later," Obito, who was also resting, internally mocked while cradling his egg.
As to why he didn't voice it directly, it was because the inherently mischievous Rockruff would surely use Sand Attack on him if it heard, dirtying his clothes.
Obito wiped his Pokemon Egg with his clothes, "You must grow to be a strong and mighty ninja beast, so we can thrash the annoying white-haired guys together."
Just as Obito was fantasizing whether the egg contained a dragon or a tiger, a bright white light appeared.
Obito watched expressionlessly at the spot where the white light appeared.
If it was his Pokemon Egg hatching, he'd be encompassed in white light, not just seeing it.
Obito didn't need to think to know whose it was, as there were only two people whose Pokemon Egg hadn't hatched yet: his and Shisui's. Nohara Rin hadn't become a Jonin and hadn't received an egg yet.
The dazzling white light from the hatching Pokemon Egg attracted everyone's attention, with even disciples who were training stopping to look in Shisui's direction.
"Another one hatched, what could it be this time? Will it be a canine again?" Kakashi stroked Rockruff's head, curiously watching the center of the white light.
He was very curious about what kind of creature could hatch from the Pokemon Eggs.
As the white light gradually faded, everyone finally saw the appearance of the Pokemon in Shisui's hand.
"A fox..." A peculiar expression flashed across Kakashi's face. A fox is a mammal, after all.
But Kakashi quickly stopped worrying about this. It's a ninja beast, after all; being a bit unusual is normal, as long as it didn't hatch a sword, because then Kakashi's worldview would truly collapse.