"Naruto, if you can extract Natural Energy from the Slug Mucous Acid and fuse it into your own Senjutsu Chakra, that will mean your training in the Shikkotsu Forest Sage Art is on the right track." Looking at Naruto with a serious expression, Tsunade said concisely, "And to extract Natural Energy from it, coming into contact with the highly corrosive Slug Mucous Acid is an essential step. This is one of the perils of training in the Shikkotsu Forest Sage Art."
"Judging by Granny Tsunade's words, are there other dangers to mastering the Shikkotsu Forest Sage Art?" Naruto did not interrupt Tsunade halfway through, waiting until she finished speaking before he asked.
"Of course, the practice of sage arts requires meticulous and delicate balancing. I'm sure you, having already mastered the Mount Myoboku sage art, know this very well, don't you, Naruto?" Tsunade nodded and said, "Concentrating your mind to draw Natural Energy into your body and harmonize it into Senjutsu Chakra is a process that cannot afford a single mistake. On top of that, you have to face the constant danger of being corroded by the slugs' powerful acid. Ordinary people could never accomplish such a thing."
Chapter 131