I, The New Hokage of Konoha

As an ally of Onokigakure, Uchiha Shisui, who has contributed significantly on the battlefield of the Land of Grass, learned about the departure of the Rock Ninjas stationed at the border of the Land of Rain on the second day through conversations among the Rock Ninjas.

As for why he didn't receive the intelligence at the earliest opportunity, it's due to the subtle relationship between the Ninjas Alliance, particularly considering the delicate dynamics among the Four Nations now.

Despite being allies and fighting together for a period, both sides maintained a significant level of caution. Especially when Uchiha Madara, in an apparent effort to preserve strength, refrained from direct involvement, intensifying Onoki's vigilance toward Akatsuki.

This was manifested in Onoki's meetings where various combat strategies were devised; they seldom invited Obito and often informed him only when preparations were completed and actions were imminent.

In essence, Obito was treated as a mere pawn. Obito was well aware of this. Just as Onoki kept secrets from him, he didn't disclose numerous matters to them either. Both sides harbored similar thoughts. Obito also saw Onoki and the Four Nations as tools against Konoha. As long as the objectives were met, he didn't care how many of his so-called 'allies' perished; there would be a fallout afterward anyway.

Consequently, the change in leadership in Amegakure had not been conveyed to Onoki under Obito's disregard. When the Rock Ninjas were withdrawing, due to their irrelevance to the battle in the Land of Grass, Obito wasn't informed.

This resulted in a grave mistake.

Initially, when Obito casually heard about the news regarding the Land of Rain from the Rock Ninjas's conversation, he didn't think much of it. However, his steps abruptly halted. It was then that Obito remembered that the current leader of Amegakure should still be that woman who plays with paper.

Even though he had spent a considerable time in Amegakure due to the Akatsuki's affairs, once Nagato, the most significant tool, lost his relevance and the Rinnegan was reclaimed, he disregarded Amegakure.

He never bothered about the so-called grudge of Konan, who always seemed to follow Nagato without her thoughts.

But now, upon hearing that the Rock Ninjas forces were withdrawing from the border of the Land of Rain, Obito couldn't help but slightly furrow his brow.

Amegakure... Konan...

Could they be planning something against Onokigakure?

If Akatsuki hadn't allied with the Four Nations, given Konan's and Amegakure's stance, apart from remaining neutral, they would have most likely targeted Konoha. But now...

Obito couldn't guarantee that Konoha, well aware of Akatsuki's situation with him and Madara, wouldn't divulge it to Konan. Her hatred towards him was too normal to ignore.

No!

This must be informed to Onoki!

Thinking this, Obito's expression tensed. Equally aware of the current battlefield, he realized that if the Rain Ninjas, taken unprepared, entered the conflict, it would be an absolute disaster for Onokigakure.

Hence.

Five minutes later.

Inside Onokigakure's main account, after listening to Obito's urgent words, Onoki, feeling thunderstruck, involuntarily staggered.

When he regained his senses, he urgently leaped off his chair, shouting angrily at Obito:

"Why didn't you inform me about such a major change in Amegakure's leadership???"

Obito felt awkward at the words. Though not as arrogantly self-assured as Madara, being a Uchiha, having activated the Mangekyo Sharingan, his arrogance persisted.

Could he say that he hadn't cared about the Rain Ninjas and Konan before this sudden realization?

Moreover, with the strength of the Rain Ninjas, having two thousand Rock Ninjas stationed there was more than enough.

But who would have thought Onokigakure's situation would deteriorate to such an extent that even these two thousand were reassigned?

Not wanting to dwell on this issue, Obito cleared his throat and quickly redirected the conversation, saying, "Ahem! The crucial point now is to reconsider the position of Amegakure."

Although he wanted to strangle the guy in front of him out of sheer frustration, Onoki, understanding the severity of the situation, forcibly suppressed his anger and grumbled:

"What reconsideration! Amegakure deliberately concealed Tsuchikage's death, manipulating Onokigakure, clearly with malicious intent! You've caused a mess!"

As he finished, thinking about Onokigakure's current disadvantage, Onoki glared fiercely at Obito once again.

Just when Obito contemplated if he should use his intangibility to avoid the potential Dust Release under Onoki's imminent fury...

A deafening boom.

The massive desk in front of Onoki instantly shattered.

Acknowledging the irreplaceable roles of Obito and Madara on the frontline battlefield, Onoki vented his anger at an object nearby.

Ignoring Obito further, Onoki immediately summoned people, issuing new orders, hoping to swiftly cover the breach in the Land of Rain.

But it was too late.

At that moment, the main forces of Konoha launched a comprehensive assault once again.

The Rock Ninjas, slightly weaker now, struggled to hold against Konoha's intense offensive, making it challenging to allocate resources.

Simultaneously, the Rock Ninjas, having left the border of the Land of Rain the day before and joined other units, engaged in fierce combat led by Tsuchikage against the Ninjas forces under Tsuchikage at a different front. They couldn't disengage promptly.

This meant that once the Rain Ninjas entered the Land of Earth, it would be almost deserted.

Having experienced two Ninja Wars, Jiraiya didn't miss this opportunity.

With Minato leading a group of Konoha Ninjas, they provided the best conditions for him and the Rain Ninjas.

Seizing the moment, under the leadership of Jiraiya, the entire force of Amegakure, almost four thousand strong, including Konan, breached the borders between the Land of Rain and the Land of Earth.

Rather than targeting the Rock Ninjas in the Land of Grass or the Rock Ninjas battling Tsuchikage, they aimed directly at the crucial logistics line between the Land of Earth and the Onoki forces in the Land of Grass.

Similar to when as a student, Minato cut off the crucial logistics line of the Rock Ninjas by severing the Godaime's Bridge, forcing the Rock Ninjas to seek peace talks.

Now, as a teacher, Jiraiya executed a grander strategy.

Thus, in the Fourth Great Ninja War, another version of the 'Battle of the Godaime's Bridge' officially commenced."