Shin Uchiha asked, "System, when will my Eternal Mangekyō Sharingan be able to evolve into the Rinnegan?"
"Host, you lack the necessary conditions for awakening the Rinnegan, so your Eternal Mangekyō Sharingan cannot evolve into it."
Shin Uchiha was greatly surprised by the system's answer. As he remembered it, Madara Uchiha had integrated a piece of Hashirama Senju's flesh into his own body and finally awakened the Rinnegan when he was nearing death from old age. He had then given his Rinnegan to Nagato, who had Uzumaki blood, and groomed Obito Uchiha in preparation for his eventual resurrection.
That was why Shin Uchiha was so surprised. He felt he already met the same conditions as Madara Uchiha, and he even possessed a complete sage body. He should have awakened it faster than Madara Uchiha had.
In response to Shin Uchiha's confusion, the system gave him a detailed explanation:
"Host, Madara Uchiha was Indra's reincarnation and possessed Indra's chakra, while Hashirama Senju was Asura's reincarnation. Thus, when Madara Uchiha transplanted Hashirama Senju's flesh into himself, he effectively came to possess both Indra's and Asura's chakra. Only after several decades did he awaken the most basic Rinnegan."
Shin Uchiha rubbed his chin. He really had not expected Madara Uchiha and Hashirama Senju's identities to be so complicated, or that awakening the Rinnegan required possessing both Indra's and Asura's chakra.
When in doubt, ask the system. Shin Uchiha voiced his question: "Why can you only awaken the Rinnegan by possessing both Indra's and Asura's chakra?"
"Host, Indra and Asura were the sons of the Sage of Six Paths. They inherited his sage eyes and sage body respectively-in other words, the fundamental forms of chakra, yin release chakra and yang release chakra. Only by possessing both and merging them to form the power of