Even a tiny Slug clone contained more life force than an ordinary person.
More importantly, Slugs could slowly recover their life force, so there was no need to waste a life to activate Netherworld Gate!
"We sent a group of researchers into Netherworld Gate and discovered something very strange."
Orochimaru did not explain immediately. Instead, he made an inviting gesture. He intended to accompany Uchiha Yuu into the passage; only by seeing it with their own eyes could they discover its wondrous aspects.
"Teacher has left me in suspense. I also want to see what it is really like inside."
A stable Netherworld Gate was guaranteed not to produce monsters, reducing the dangers of the experiment to a minimum. Orochimaru would not joke around with their lives.
As soon as they entered, Uchiha Yuu activated his Sharingan. The dark-purple passage was formed from layer upon layer of halos.
Unlike ordinary space-time ninjutsu, Netherworld Gate was more like opening a passage that connected two locations before transporting someone through it.
A strange light flickered repeatedly in his eyes. Orochimaru wore a faint smile as he said with certainty:
"We can confirm that we are currently within the Netherworld. The only thing we have yet to understand is what lies outside."
The moment he finished speaking, Uchiha Yuu froze. He turned to look at Orochimaru and rejected his proposal.
"We can be certain that monsters will rush out, and this barrier is not as sturdy as imagined. Last time, I shattered it with one punch, and some of the creatures outside noticed."
Both of them knew the origins of the black severed hand. If the passage could not be closed in time, more and more such monsters would emerge, eventually threatening and impacting the Shinobi World.
Uchiha Yuu was worried that a