Shihōin Naraku experienced the changes taking place inside his body. It was not only his outward appearance that had been renewed, but also his cells, beyond what the naked eye could observe.
Within those vibrant cells was engraved the genetic code for longevity.
Although Naraku had yet to reach the point of true immortality, a lifespan of five thousand years already delighted him.
With that much time, Naraku refused to believe he could not achieve true immortality.
Besides, even if the Shinobi World offered Naraku few options, he remained confident that he could achieve his goal with the system behind him.
Naraku rapidly circulated the senjutsu chakra inside him, gathering it in his palm, where it glimmered faintly.
"It's completely different from the senjutsu chakra I produced before. This senjutsu chakra is brimming with vitality."
Watching Naraku experience the senjutsu chakra, the Katsuyu Sage explained from beside him, "Now that you've succeeded in your training, little Naraku, you should have noticed the benefits of this special Sage Mode."
"Shikkotsu Forest Sage Mode involves fighting by using your own powerful vitality and your ability to commune with nature."
"And most of its techniques are support and healing Senjutsu! Only a few are combat Senjutsu. Would you like to learn them, little Naraku?"
"Of course." Naraku nodded. He had come here to learn Senjutsu in the first place. "Please teach me the Senjutsu of Shikkotsu Forest, Katsuyu Sage!"
After that, Shihōin Naraku began learning Senjutsu from the Katsuyu Sage.
Naraku had already mastered Sage Mode completely and truly reached the end, becoming the first person to complete the training in Shikkotsu Forest Senjutsu!
Moreover, Naraku's mind and soul were immensely powerful, allowing him to learn any technique very quickly.
With so many advantages, it did not take Naraku long to master the