So Asura and Indra's reincarnations were, in truth, two wandering ghosts driven by obsession, continuously possessing their own descendants!
Only after Naruto and Sasuke came to understand each other and reconciled did Asura and Indra's obsessions finally completely dissipate and reenter the cycle of reincarnation.
Only after Naruto and Sasuke fused those two chakras were they able to advance by leaps and bounds in barely over a decade, as though aided by the gods. Their cultivation speed even surpassed Nawaki's, despite him possessing the Wish Power System! At their age, Nawaki had only been Kage-level, while these two cheat users had already firmly entered the Six Paths-level!
Although both chakras were incredibly immense, if Nawaki's original body could fuse them, he could even ascend to the Six Paths-level in a single step. Yet he was not tempted in the slightest!
That was because those two chakras contained Asura and Indra's obsessions. To a cultivator like Nawaki, they were lethal poison. Once fused, it would be almost impossible to advance any further in the future. Besides, he had already obtained the Sage Body through his clone, and he would eventually reach the Six Paths-level anyway. There was no need to ruin his future for the sake of a shortcut.
Once Naruto's reincarnation was complete, all the energy in Nawaki's hands dissipated. Kushina immediately looked at Nawaki expectantly and asked, "Well? Did it work?"
"I heard that Senior Hizashi's child fused their bloodline early during pregnancy, and both their bloodline concentration and talent have already surpassed every member of the main family! I wonder what our child's talent will be like?"
A complicated expression flashed through Nawaki's eyes upon hearing this, but then he said gently, "Don't worry! This child will perfectly inherit the bloodlines of both the Senju and Uzumaki clans.