"Naruto, you had already mastered Sage Mode, and even better than Little Jiraiya did. But the biggest problem was putting Senjutsu into actual combat. Right now, you could only store natural energy in your body for five minutes at most."
Sage Fukasaku pointed out Naruto's current problem, as well as the final stage of his training.
Senjutsu Chakra was different from ordinary chakra. A ninja's ordinary chakra was formed by combining physical energy and spiritual energy.
Senjutsu Chakra, meanwhile, added natural energy to physical energy and spiritual energy. It was the product of three energies combined.
Naruto could not maintain natural energy inside his body for long periods. The final stage, partner training, required Sage Fukasaku or Sage Shima to stand on Naruto's shoulder and maintain the natural energy for him. That would allow him to remain in Sage Mode indefinitely, the ultimate form of Mount Myoboku's Sage Mode.
After explaining the final stage of training, Sage Fukasaku stood on Naruto's shoulder and began absorbing natural energy before injecting it into Naruto's body.
Huff...
Suddenly, cold sweat broke out across Sage Fukasaku's body. An immense, bloodthirsty pressure surged toward him. Sage Fukasaku was blasted away and crashed to the ground.
Naruto froze for a moment, then immediately understood what had happened. He asked inwardly, Kurama, wait. What's going on? Didn't you learn about this from Awen's memories? Why are you doing this?
Inside the inner space, Nine-Tails slightly raised his head. "I'm the Nine-Tails. Since you know what was in Awen's memories, then you should know that I hate animals without fur and with slimy skin the most. When their chakra came near me just now, I got goosebumps all over."
"And..." Nine-Tails shifted the subject and continued, "in Awen's memories, when that white-haired brat fought his Rinnegan disciple, summoning