Land of Grass.
Around the Konoha Ninja Camp, Mokgetsu was teaching Observation Haki.
Apart from Obito and Shisui, Namikaze Minato was also learning Observation from Mokgetsu.
This was initiated by Mokgetsu, reasoning that being the only one who could identify the Hidden Rock Spy would be too tiring, so he needed Namikaze Minato's help.
Mokgetsu knew very well that once the information from the Land of Grass was sent back, even if Sarutobi Hiruzen thought highly of him, he would find a way to have the Observation handed over.
Even if the one possessing this Ninjutsu was not him, Habu Mokgetsu, but Sarutobi Hiruzen's grand-disciple Namikaze Minato, or Sarutobi Hiruzen's disciple Jiraiya, it would be the same result.
Ninjutsu that can have a huge impact in war must be handed over to Konoha, no matter who possesses it. Otherwise, it's against the Will of Fire and not loving Konoha.
Since it would be handed over sooner or later, Mokgetsu naturally opted to first teach Namikaze Minato, with whom he had a better relationship.
Mokgetsu didn't really mind Observation Haki being spread because its localized version had a much higher threshold than Armament Haki, and just having perception talent alone blocked out a large number of people.
Moreover, even with perception talent, learning the Observation is not guaranteed, which blocks out even more people.
Those who can learn it may not necessarily master it, filtering out another group, and those mastering it might not have the special abilities of Observation.
With only a few thousand ninjas in Konoha, after multiple screenings, in the past few years, the number of ninjas who could enhance their combat power through learning Observation might be few and far between.
After a few years, Mokgetsu might be invincible, naturally worrying less about these issues.
If he truly didn't want to share Observation, there were actually many ways to do it.
The simplest and most direct way would be not to use Observation to detect malice as a reason for finding White Zetsu.
The second would be not to teach Namikaze Minato Observation, hence Mokgetsu could submit a modified, watered-down version of the Observation.
"At the initial stage of cultivation, try not to use your eyes to observe. Instead, avoid the opponent's attacks by sensing their aura," Mokgetsu said, emphasizing the key points of the early stages of Observation training.
Since there were no powerful beasts around, Mokgetsu had them use Shadow Clones to train with each other.
For example, having Shisui's Shadow Clone attack Obito, while Obito's Shadow Clone would attack Shisui, thus exchanging training sessions.
Due to Namikaze Minato's different status from Obito and the others, Mokgetsu's Shadow Clone specifically assisted with Minato's training.
Thus, a problem arose—excluding Namikaze Minato, whom Mokgetsu took charge of, the Observation training squad ended up with an odd number, leaving someone out.
Because Might Guy and Kakashi were not participating in the Observation training.
"Damn it, does this mean Kakashi must create a Shadow Clone to train with little Rin?" Obito felt uncomfortable at the thought.
Mokgetsu wanted to suggest that a person wasn't limited to only creating one Shadow Clone.
However, to ensure harmonious and friendly interactions among his students, Mokgetsu refrained from mentioning it.
Ultimately, Obito gave up training with Shisui and, with a resigned attitude of "if not me, then who," teamed up with Kakashi's Shadow Clone.
Perhaps due to the importance of the training, there was no conflict between Kakashi and Obito.
"Mokgetsu's talent in Ninjutsu development is no less than his ability to learn it, to have developed such a perception Ninjutsu," Minato contemplated during a break.
Namikaze Minato, with his strong perception talent, also knew perception Ninjutsu, so he had a deeper insight into the Observation than the others.
In terms of difficulty, Mokgetsu's Observation was the hardest perception Ninjutsu Minato had ever encountered, even for someone like him with some perception talent.
By Konoha's Ninjutsu grading standards, Observation was undoubtedly an S-level Ninjutsu.
What surprised Namikaze Minato the most was the potential of the Observation.
Although he hadn't been training for long, Minato realized from his training and Mokgetsu's explanation that this was a Ninjutsu that could be deeply developed in various directions.
Observation could be used like ordinary perception Ninjutsu to sense Chakra over a wide area, or it could be applied more in combat to predict enemy attacks and delve into perception depth to sense goodwill and malice.
If it weren't for the high threshold and talent required for Observation, Minato thought some in the Hyuga Clan might lose their jobs.
Additionally, the value of the Uchiha Clan's Sharingan would decrease.
"Mokgetsu, I have good news and bad news. Which do you want to hear first?" Jiraiya suddenly approached with a smile, addressing Mokgetsu.
Everyone present looked at Jiraiya, thinking how there could be bad news after such a great victory.
Could it be that the intelligence team found that Hidden Rock had dispatched reinforcements to the Land of Grass?
"Good news," Mokgetsu considered and replied.
He believed the news, whether good or bad, was not a significant issue, otherwise, Jiraiya wouldn't leisurely let him choose.
"The good news is that the higher-ups will greatly reward you, probably with a big sum of money. If you want, you might also assume an important position in a department," Jiraiya answered.
For ninjas wanting to become stronger, money is indispensable. It covers not just various cultivation resources but merely the consumption of ninja tools itself is significant, making cash rewards for ninja accomplishments quite normal in Konoha.
A pay raise naturally accompanies a promotion.
However, due to the special nature of ninjas, not every ninja is willing to sit in an office handling administrative tasks, so it depends on personal preference.