Board Thread:Theories and Speculation/@comment-45444155-20200410191621/@comment-45444155-20200414030705

LegionZero wrote: I dont recall that. I remember it being stated that people had spiritual and physical energies but could merge them into chakra until Hagoromo came around.

Look again at Chapters 665 (Madara's words about people mixing their spiritual and physical energies through the chakra received from Hagoromo, thus strengthening their chakra. If they had amplified their chakra, then they had it before) and 671 (Hagoromo's words that "Infinite Tsukuyomi" is a technique that allows the use of the victim's chakra (speech about "God: Nativity of a World of Trees," which is used in conjunction with "Tsukuyomi.  It is known that Kaguya used these techniques long before her chakra was spread).