"Does Shikkotsu Forest's Senjutsu corrode you?"
Yayoi sounded as if he were asking a question, yet also as if he were answering it himself.
He also felt something strange. Although he had shown signs of losing control just now, he himself hadn't felt any danger.
"Yes, Lord Yayoi."
Katsuyu's gentle voice came through.
"All right, Lady Katsuyu. Thank you. Tomorrow, I'll come with my teacher to sign the summoning contract with you."
"Of course, Lord Yayoi."
Katsuyu gave an adorable reply, then vanished in a puff of white smoke with a poof.
"I wonder why Little Slug calls me 'Lord.' Isn't she one with the Slug Immortal?"
After Katsuyu left, Yayoi was a little puzzled by the way she spoke. But soon, the novel experience of using Senjutsu drew his attention.
Since he had been conducting the experiment on himself, Yayoi had been able to observe more data.
His Mirror Eye remained activated as he recorded how it felt to synthesize Senjutsu Chakra.
He could feel Natural Energy combining with chakra.
He could even sense a connection between the two energies. That was why they could fuse.
Natural Energy existed in nature; it was unique to this world.
So where had the chakra connected to it come from?
That question touched on the origins of chakra, and for a moment, Yayoi couldn't make heads or tails of it.
After all, he hadn't watched the ending, and only knew a few scraps of information about the final boss.
The question had truly stumped Yayoi, but at this stage, there was no need to dig into its origins.
It was enough to know that the two were connected.
That meant he could use chakra to explore the link between them.
He could use the Mirror Eye to analyze it and try to