It was not only Indra's Illusion Technique that was ineffective against Asura. The Illusion Techniques of Madara Uchiha and Sasuke Uchiha, as the reincarnations of Indra and Asura, were likewise ineffective against Hashirama Senju and Naruto Uzumaki.
As for whether Asura's Illusion Techniques, and those of Asura Chakra's reincarnations, were effective against Indra and the reincarnations of Indra Chakra, Naruto never showed it.
After all, when it came to Illusion Techniques, Asura, who had inherited the Sage's body, was far inferior to Indra; the same was true of Hashirama Senju and Naruto Uzumaki.
Even if they were not immune to Madara Uchiha and Sasuke Uchiha's Illusion Techniques, their proficiency in Illusion Techniques made it impossible for them to affect Madara Uchiha and Sasuke Uchiha.
Thus, the battle between Madara Uchiha and Hashirama Senju was merely a contest of Ninjutsu and taijutsu, without involving Illusion Techniques.
Ordinary Group Owner: "I feel like I already know the truth!"
After sorting through all the information in her mind, Su Yunqing felt that she had figured everything out.
There were many things she should have thought of long ago. So many plotlines had left behind clues, yet she had never noticed them.
A Dojutsu that amplified Ninjutsu?
When Madara Uchiha spoke of his battle against the Five Kage, he said, "Why would adults take children seriously?"
Not to mention the mere Shinobi Allied Forces!
He had not even taken fighting the Five Kage seriously, so how could he possibly have used his Mangekyou Dojutsu from the very beginning to amplify his Ninjutsu?
Richest Man in the Lighthouse: "You've said all this, but you're not Detective Conan."
Richest Man in the Lighthouse: "Madara Uchiha already gave you the answer. Why are you connecting so many details?"
Richest Man in the Lighthouse: "Working backward from the