Because Uchiha Fugaku truly saw the hope for the Uchiha Clan's revival in Uchiha Obito.
It's very difficult for an Uchiha to become Hokage.
First is the indispensable strength; though the Uchiha Clan's Sharingan gives them a significant advantage over ordinary ninjas, this level of advantage is nothing among those in line for Hokage, because every ninja with a chance to become Hokage is a true genius.
Once the talent and strength check out, next is identity. If one has an identity related to the Hokage, such as being a Hokage's disciple, or even a Hokage's student or guard, then the chances of becoming Hokage are greater.
Lastly is reputation. The Hokage won't be a nameless ninja; greater reputation can also increase the chances of becoming Hokage.
Obito's talent will undoubtedly make him a strong figure like the Sannin, so there's no problem in that aspect.
Then, after Obito's graduation, his teacher was Namikaze Minato, a disciple of Jiraiya, a pure Hokage lineage. Obito's other teacher, Habu Mokgetsu, is the vice principal of the Ninja Academy and a strong Hokage lineage; identity-wise, there's no issue.
In terms of reputation, Obito, as a young Chunin, is already famous in Konoha, having far exceeded the accumulation needed for his age group.
At just ten years old, Obito has already made strides on the three major aspects of becoming Hokage, which is why Uchiha Fugaku has high hopes for him.
"I want to learn some Advanced Fire Release Ninjutsu."
Obito replied with a sly smile.
Obito never thinks he has too much ninjutsu; having it but not learning is different from not having it at all.
"Then come again tomorrow night. I'll see if there's any Fire Release Ninjutsu in the clan suitable for you."
Uchiha Fugaku pondered for a moment and said; he wasn't reluctant to part with ninjutsu, but worried about Obito biting off more than he could chew.
"Heh heh, then I'll trouble you, Clan Leader Fugaku."
Obito scratched his head and laughed, thanking Uchiha Fugaku.
"This is the meaning of family. You just keep growing and striving."
Uchiha Fugaku said with a smile as he handed the scroll brought by Uchiha Mikoto to Obito.
Though not very interested, as it was a free gain, Obito happily accepted it.
Having achieved his goal, Obito didn't linger, worried that Uchiha Itachi might ask him a mind-boggling question again.
"Itachi, you should learn from Obito more."
Watching Obito's departing figure, Uchiha Fugaku said expectantly as he patted Uchiha Itachi's head.
Besides Obito, Shisui's performance was also excellent. If his son, Uchiha Itachi, could be like Obito and others, it would truly be a revival era for the Uchiha.
"Learn from Obito..."
Reflecting on the conversation he just had with Obito, Uchiha Itachi fell into deep thought. If he had a choice, he'd prefer to learn from Shisui; Obito didn't seem very smart.
...
The Hidden Rock Village, Tsuchikage Office.
"First there was the Yellow Flash who could fight evenly with the AB Duo, and now there's Habu Mokgetsu who defeated the Seven-Swords Ninja and killed Minazuki Kan. Konoha truly has an enviable number of geniuses."
Onoki put down the materials in his hand, his expression growing more serious.
The Hidden Rock has done a great job recuperating and developing their ninja force, and now they can easily form a ten-thousand-strong ninja squad.
On the surface, the Hidden Rock Village looks prosperous, but only Onoki, as the Third Tsuchikage, knows of the hidden flaw.
That is, the top-tier strength of the Hidden Rock Village is not being succeeded well, among the ten-thousand-strong Hidden Rock Squad, only Kitsuchi barely satisfies Onoki, while others have shown no potential to become top-tier strong.
This leaves Onoki somewhat worried; the reason the Five Great Ninja Villages are what they are is because they have top-tier strength oppressing the Ninja World and numerous middle and high rank ninjas to crush the small ninja villages comprehensively.
Currently, the Hidden Rock still has some old veterans like him, but twenty years later, if they're still in the same position, they'll suffer a great loss in top-tier strength.
Onoki truly envies Konoha. Since the Ninja Village era began, they've produced a huge number of geniuses, despite having fewer ninjas than the Hidden Rock.
"We still have to find a way to weaken Konoha first, and maybe hold off on the Hidden Cloud for now."
Onoki thinks Konoha is too strong; if they don't weaken Konoha first, they can't play the game; stalling will keep Konoha forever the strongest.
"Ninja Master Sosuke, since their ideal is peace, maybe causing conflict between Konoha and the Land of Rain, could make the Ninja Sect face off against Konoha."
Onoki thought of a plan to make enemies for Konoha when he saw the report submitted by Kitsuchi.
Although the Ninja Sect doesn't have much strength, the few strong ones in the Ninja Sect shouldn't be underestimated.
The Ninja Master Sosuke who could defeat Hanzo is certainly a top-tier strong; his solitary combat ability might only be second to Sarutobi Hiruzen and the Nine-tailed Jinchuriki.
Kakuzu, with decades of activity in the black market, shouldn't be underestimated either. Even if he can't match the Sannin, he wouldn't lag far behind.
Though Nagato is not renowned in the Ninja World, based on Kitsuchi's reports, Nagato isn't an ordinary ninja, possibly matching Kakuzu in strength, and his methods are quite elusive.
With these three strong individuals, Onoki believes the Ninja Sect will surely cause a significant setback for Konoha.
The Hidden Sand Village.
After completing her mission, Pakura reviewed the latest war situation in the Ninja World.
"Konoha's great victory, Habu Mokgetsu killed Minazuki Kan, Kurosuki Raiga…"
Seeing these somewhat familiar names, a golden silhouette quickly formed in Pakura's mind.
"It's not surprising if it's him."
After recalling the battle from a few months ago, Pakura sighed.
Though intelligence couldn't compare, Mokgetsu did defeat her in a few moves.
If Mokgetsu had the intent to kill at the time, he could have killed her outright.
Pakura had a premonition then that she would soon hear news of Mokgetsu sometime. Such a strong person couldn't remain unknown forever.
As expected, months later, Mokgetsu became a newly rising star on the battlefield, famed in the Ninja World.
"The Hidden Mist suffered so much at Konoha's hands, they probably won't dare to provoke the Hidden Sand for a while." Pakura thought.
The Hidden Mist had previously shown considerable interest in the chaotic Hidden Sand, and Pakura was deeply wary of them.
The current state of the Hidden Sand is quite bad due to the internal conflicts after the Third Kazekage's disappearance and the subsequent exploitation by the Hidden Cloud.
Even Pakura, a hero of the Hidden Sand, felt they were currently the weakest of the Five Great Ninja Villages.
"If it weren't for the internal war for the position of Kazekage, the Hidden Sand wouldn't have fallen this far."
Pakura despises those who, for the sake of power, cause internal strife in the Hidden Sand Village.
The Hidden Cloud Village.
The Third Raikage summoned his think tank for a meeting after seeing Mokgetsu's achievements and Konoha Land of Fire East Coast Battlefield results.
Not only the Great Ninja Villages entrenched in war, but also the extraordinary encounter battle spread rapidly across the Ninja World, and the smaller Ninja Villages and ninja forces quickly learned of a new young strong in Konoha named Habu Mokgetsu.
The morale among Konoha's ninjas on all battlefields soared, believing their victory was inevitable.
While Konoha's rival ninja villages racked their brains to investigate Mokgetsu's information.
Although Konoha publicized Mokgetsu's feats, most ninjas only knew Mokgetsu was strong, without knowing his abilities.
Only those in direct combat with Mokgetsu from the Hidden Mist have a considerable understanding of his abilities.
From fighting with Mokgetsu, they know he's skilled in Ice Release and Fire and Wind Combination Ninjutsu, as well as Flying Thunder God.
Those aware of Mokgetsu's information understand just how difficult he is, capable of long-range combination ninjutsu bombardment, and close-range instant kill with the Flying Thunder God.
Due to their adversary relationship, the Hidden Mist willingly sold much of Mokgetsu's information multiple times.
PS: Recently, the weather's been fluctuating, making it a bit hard to bear. Everyone, please keep warm; Little Orange is already sick. Every time I swallow, it's like swallowing blades, though thankfully the dizziness isn't too severe. Writing four thousand words isn't an issue, just needs more time.