He could not absorb too much natural energy, or it would erode and damage his body.
Nor could he absorb too little, or his spiritual energy would overwhelm and devour it.
Shihōin Naraku sat cross-legged on the stone slab, sensing the natural energy flowing around him and seeking a balance.
As his training slowly continued, a light rain began to fall, pattering onto the flowers, grass, trees, and other vegetation, as well as Naraku's exposed body. Wisps of smoke rose.
Although the scene looked beautiful, the raindrops were highly corrosive.
Not only were the surrounding plants corroded beyond recognition by the acid rain, but Shihōin Naraku's entire body also suffered severe burns.
The acid rain left numerous bloody wounds across Naraku's upper body, making him look utterly miserable, but his powerful regenerative ability constantly repaired the damage.
Pain and itching spread throughout his body, giving him an irresistible urge to scratch.
The unbearable sensation reached deep into his bones, disturbing Naraku's thoughts so much that he could not calm his mind and almost failed to gather natural energy.
"This is the first hurdle!"
"I wonder how long Lord Naraku can hold out!"
Katsuyu watched intently from the side, not daring to relax for a moment.
The acid rain brought abundant natural energy, but it also harmed the ninja training in Senjutsu.
If their chakra reserves were too low and their regenerative ability too poor, ordinary ninja could not last long in the acid rain at all.
And this was only the beginning. Both the constant damage from the acid rain and the ninja's own recovery would affect the absorption and balance of natural energy, making it difficult to form Senjutsu Chakra.
As the acid rain rich in natural energy fell, Naraku clearly felt that gathering natural energy had become much