In the blink of an eye, six years had passed, and Neji Hyuga had reached the time of his graduation from the Ninja Academy.
Over those six years, while teaching and training Tenten, Neji Hyuga also contacted Akatsuki through Takashi Hyuga. He provided them with extensive educational materials on grassroots administration, allowing Akatsuki to train a group of grassroots managers.
Through the documents Neji Hyuga sent them, Akatsuki also came to realize that after unifying the world, they could not continue relying on the Five Great Shinobi Villages' old model of governance. Over the past few years, following the guidance in Neji Hyuga's documents, the grassroots managers they trained had begun managing Amegakure, with fairly good results. This made Akatsuki trust the still-unmet Neji Hyuga even more.
Meanwhile, after speaking with Neji Hyuga six years earlier, Hiruzen Sarutobi had dispatched Jiraiya, Kakashi Hatake, and an Anbu squad skilled in reconnaissance to Mountains' Graveyard.
They did not find Madara Uchiha. Instead, they encountered Obito, and a fierce battle broke out. Kakashi Hatake thereby confirmed that he was Obito, even though the masked, one-eyed man had kept claiming to be Madara Uchiha.
They failed to keep Obito. While investigating inside Mountains' Graveyard, they discovered fully equipped biological and medical laboratories, as well as a vast and complete underground base. They immediately abandoned the investigation and hurriedly left Mountains' Graveyard.
Because of this, Hiruzen Sarutobi had practically confirmed Madara Uchiha's existence and verified Neji Hyuga's claims. He became even more wary of Neji Hyuga and purchased quite a few Lesser Flesh-Repair Pills, Intermediate Flesh-Repair Pills, and one Advanced Flesh-Repair Pill from him in preparation for war.
After Danzo Shimura had been defeated by Neji Hyuga, he became even more mysterious and reclusive. Occasionally, he sent people to purchase Lesser Flesh-Repair Pills, Intermediate Flesh-Repair