How Itachi Uchiha Infiltrated the Village Hidden in the Leaves Without Being Detected
The entire Village Hidden in the Leaves, Konoha, was enveloped by layers of specialized sensory barriers, spanning from underground to the skies above. There existed a Sensory Unit led by the Yamanaka Clan, responsible for monitoring the chakra of everyone within Konoha—when entering or leaving through the main gates. If any unfamiliar chakra entered Konoha without authorization, it would immediately be detected by the Yamanaka Clan's Sensory Unit, prompting a report of possible infiltration.
Despite the presence of barrier jutsu formulas that shrouded Konoha, Uchiha Itachi managed to infiltrate the village with remarkable ease.
Here is How Itachi Infiltrated the Village Hidden in the Leaves Without Being Detected.
1. How Itachi Infiltrated the Village Hidden in the Leaves
Being the sole perpetrator of the Uchiha Clan massacre in Konoha and with his name listed in the S-level Bingo book of fugitives, it would be reasonable for Itachi's chakra to be recognized and monitored by the Yamanaka Clan's Sensory Unit. If Itachi dared to attempt infiltrating the Village Hidden in the Leaves again, it should have been detected and discovered.
However, remarkably, Itachi managed to infiltrate Konoha without being detected by the Sensory Unit. He even took Kisame around and relaxed in the village. This was because, as someone who had served as the head of the Black Ops ANBU, Itachi had been informed by the Third Hokage, Sandaime Hiruzen, of a password that allowed him to bypass the village's barrier jutsu without being detected.
After the Uchiha Clan massacre incident, Itachi and Sandaime Hiruzen held a secret meeting. During this meeting, Sandaime Hiruzen promised not to change the password for bypassing Konoha's barrier jutsu. This was because Itachi was considered to have contributed to maintaining peace in the village and preventing a civil war between Konoha and the Uchiha Clan.
Despite the consequences of his actions, Itachi had to bear the risk of being labeled as a villain listed in the Bingo book as a living or dead target, given that he had eliminated the entire Uchiha Clan except for his younger brother, Sasuke Uchiha.
Due to his knowledge of the password that could penetrate Konoha's barrier jutsu, Itachi was able to enter and infiltrate the village, even bringing in outsiders like Kisame without the Yamanaka Clan's Sensory Unit noticing. Apart from Itachi, there were actually several elite individuals who also knew the password to bypass Konoha's barrier jutsu.
2. Itachi's Objective in Infiltrating the Village Hidden in the Leaves
When all members of the Akatsuki received news from Pain that a war had broken out in the Village Hidden in the Leaves due to an attack by shinobi from Otogakure and Sunagakure, resulting in the death of the Third Hokage, Hiruzen Sarutobi, in his battle against Orochimaru,
Subsequently, Itachi and Kisame visited the Village Hidden in the Leaves. The true reason Sandaime Hiruzen gave Itachi the password to bypass Konoha's barrier jutsu was so that Itachi could secretly enter the village if he felt concerned for the safety of his younger brother, Sasuke Uchiha.
Itachi's visit to the Village Hidden in the Leaves was purely driven by his concern for his brother, Sasuke Uchiha. This was because, in the past, Sandaime Hiruzen had promised to protect Sasuke for Itachi. After the death of Sandaime Hiruzen, there was no longer anyone assigned to watch over Sasuke in the village. Additionally, Itachi also wanted to see the appearance of his younger brother, Sasuke, who had grown into a teenager.
3. Itachi Infiltrates the Village Hidden in the Leaves as a Warning message.
Ever since the incident of the Nine-Tails attacking the Village Hidden in the Leaves, Danzo has accused the Uchiha Clan of being the masterminds who controlled the Nine-Tails with their Sharingan abilities. As a result, the Uchiha Clan faced discriminatory treatment from the villagers of the Village Hidden in the Leaves.
Feeling constantly isolated from the Village Hidden in the Leaves, the Uchiha Clan planned to carry out a coup against the village. However, Itachi betrayed his own clan and accepted the mission to completely annihilate the Uchiha Clan. Itachi believed that a battle between the Uchiha and Konoha could trigger the Fourth Great Shinobi World War, leading to many casualties. As a lover of peace who detested war, Itachi prioritized the safety of the Village Hidden in the Leaves and the preservation of its peace.
After the Uchiha Clan massacre incident, Itachi confronted Danzo and informed him that he would continue to watch and monitor Danzo's movements. Moreover, Itachi threatened Danzo that if he dared to harm Sasuke, Itachi would expose the secrets of the Village Hidden in the Leaves to enemy nations.
Therefore, a few days after the funeral of Hiruzen Sarutobi concluded, Itachi and Kisame immediately visited the Village Hidden in the Leaves. Itachi's appearance in the village was meant to be a warning message to Danzo and the elite members of the village. It conveyed that as long as Itachi was alive, he would keep a close watch on Danzo and the elite figures of the Village Hidden in the Leaves.