Methods for Mass-Producing Ninja

"Sure enough, there's no way to go directly back to the distant past?" Kenichi Amamiya manipulated the Time Machine in his hand, frowning slightly. Still, this was within his expectations. Ōtsutsuki Isshiki had mentioned this before, but Kenichi had wanted to try anyway. If he could return to the past, it would be immensely helpful for his research into the Chakra Fruit. Yet, judging from the current situation, it seemed impossible. That was somewhat regrettable. If he could go back in time, Kenichi would have been satisfied even with obtaining a little genetic material from the Chakra Fruit for testing. He had not expected the Time Machine to have such restrictions. Kenichi shook his head. But on second thought, it made sense. Without restrictions like these, the Otsutsuki Clan would probably have conquered the world long ago. Moreover, Kenichi felt that this Time Machine likely had other limitations, ones he did not yet know about and that Ōtsutsuki Isshiki had not told him.

"Ōtsutsuki Isshiki must have some contingency plan in reserve. The problem is, judging by Kaguya Ōtsutsuki's reaction, she doesn't seem to know about it either. That really is a headache. Kaguya Ōtsutsuki has far too little information, but then again, she was meant to be a sacrifice. The Otsutsuki Clan probably never imparted much knowledge to her. That does make them somewhat different from the current Hyuga Clan." Kenichi stroked his chin, then climbed out of the ruins. The more closely he examined the Otsutsuki Clan, the more flaws he found. They were such a powerful clan, so if they needed sacrifices, why had they not learned from the Hyuga Clan and placed something like a Caged Bird Seal on them? Or had things always gone so smoothly for them that they had never worried about such