Land of Rain.
Near the Ninja Sect Base.
Today is the second day of the unrestricted lecture.
No ninja who attended the first day's class chose to leave; all decided to stay for more lessons.
Regardless if they were the lowest wandering ninjas or renowned strong figures like Kitsuchi and Pakura in the Ninja World, they all made the same decision.
The reason being, the second day's class was too enticing, featuring content on Yin and Yang Chakra Nature Changes.
The nature transformations of Yin and Yang are distinct from the Five Nature Transformations; the Yin Yang nature is a bit more special, with most secret techniques in the Ninja World being related to either Yin or Yang attributes, proving their uniqueness.
Mokgetsu's proficiency in Yin Yang Chakra Nature Changes is not very high compared to other Chakra Nature Changes, with the Yang Attribute at a master level just over four thousand proficiency, and the Yin slightly less, only a bit over three thousand at master level.
But this is in comparison to himself; in fact, compared to the ninjas assessed by Mokgetsu, his Yin Yang Chakra Nature Changes proficiency has already surpassed most ninjas in the Ninja World.
Even the Ino-Shika-Cho clan, who specialize in family secret techniques, doesn't have proficiency higher than his in Yin Yang Chakra Nature Changes.
With his level, and the additional support from his teaching, given there weren't any experts in Yin Release or Yang Release on-site, it was enough to deliver a course that satisfied everyone.
"Yesterday we talked about how the Wind Attribute can make our Chakra as sharp as a blade, so the direction for advancing in the Wind Attribute is actually simple: keep thinning your Chakra, as a thinner blade will be sharper, because the force is concentrated at one point, which exerts more pressure on the object being cut."
Although everyone was anticipating the Yin Yang Chakra attributes, Mokgetsu still followed the plan and started with the Wind Attribute, since while Wind Release ninjas are few, they are still present.
Mokgetsu was speaking while demonstrating; he first cut through paper, then wood, then stone, and finally, Mokgetsu used Wind Attribute Chakra to slice through a solid iron block.
It seemed that in front of Mokgetsu's powerful Wind Release, there was nothing that couldn't be cut.
Compared to Yin Yang Attribute Chakra Nature Changes, Mokgetsu's proficiency in Wind Attribute Chakra Nature Changes was much higher, nearing nine thousand at master level.
The few Wind Release ninjas present were fully focused on listening to Mokgetsu's explanation.
Wind Release ninjas are rare, and even more rare are powerful Wind Release ninjas, so the opportunity to hear an explanation from such a powerful ninja as Mokgetsu was truly a rarity.
Even for the ninjas from The Hidden Sand Village, which has the most Wind Release ninjas, it was the same.
A Hidden Sand Genin wanted to ask the Jonin teacher about Mokgetsu's level in Wind Attribute but found his teacher was taking notes, so he shut his mouth and brought out a notebook too.
About an hour and a bit later, Mokgetsu finished explaining Wind Attribute Chakra Nature Changes and started on what all ninjas were looking forward to: Yin Yang Chakra Nature Changes.
"Creation from nothingness for Yin, life imbuing the form for Yang!" Mokgetsu stated the essence of Yin and Yang attributes.
"Therefore, most secret techniques related to the mind are Yin Release, while those related to the body are Yang Release."
Mokgetsu's words let all the ninjas understand the essence and manifestations of Yin Release and Yang Release.
Of course, just this wouldn't achieve S-level course quality, so Mokgetsu went on to explain various Yin Release secrets from his understanding—like controlling shadows, creating illusions, or connecting minds.
The A-level evaluation reward for intermediate courses is various secret techniques, and Mokgetsu practiced some at the time and is well-versed in this area.
"He truly is proficient in seven chakra attributes; does he have some ninjutsu that maintains youth?" Hanzo was astonished.
Mokgetsu's detailed explanations evidently showed he was knowledgeable, possibly mastering quite a number of Yin Release and Yang Release ninja techniques, making Hanzo suspicious of Mokgetsu.
He thought Mokgetsu might have some special secret technique to maintain his appearance, not actually as young as he seems, his real age might be similar to his own.
Even the renowned ninjutsu professor, the Third Hokage Sarutobi Hiruzen, wasn't this exaggerated; Sarutobi Hiruzen was only proficient in five Chakra attributes.
Sarutobi Hiruzen was already an extremely rare ninjutsu genius in the Ninja World, so even if Mokgetsu could surpass him, it shouldn't be too outrageous.
Even Hanzo was so surprised, let alone other ninjas. By lunchtime, they were all writing letters to their friends, urging them to attend the lecture while they could, as missing it might mean there wouldn't be a next time.
After the afternoon course ended, the rewards were recalculated.
[Completed an advanced lecture]
[Evaluation: S]
[Reward received: Chakra Nature Change insights, Yin Attribute Chakra Nature Changes +60, Yang Attribute Chakra Nature Changes +55, Wind Attribute...]
As the information appeared, Mokgetsu's mind filled with insights into various Chakra Nature Changes, and not just single nature changes, but also fusion changes like Wood Release and Ice Release.
Mokgetsu glanced at the proficiency of all his Chakra Nature Changes.
[Fire Attribute Chakra Nature Changes (Perfect Level: 621/80000), Water Attribute Chakra Nature Changes (Master Level: 10600/15000), Wind Attribute Chakra Nature Changes (Master Level: 8960), Lightning Attribute Chakra Nature Changes (Master Level: 7000), Earth Attribute Chakra Nature Changes (Master Level: 6400), Yang Attribute...]
Proficiency increases very slowly after reaching Perfect Level, and even though Mokgetsu achieved Perfect Level in Fire Attribute Chakra Nature Changes some time ago, the proficiency is still not very remarkable.
Mokgetsu suspected that even the Six Paths Sage might only have had Perfect Level in Chakra Nature Changes, not beyond perfection.