"Alright, I've nursed your bodies back to health over the past half month. Now it's time to start teaching you how to become ninja..."
Inside the wooden cabin, Hyuga Wuye sat cross-legged on the bed while Konan and the other two sat in a row below it.
"First, you need to learn how to extract chakra."
He summarized it in the simplest terms: "The physical energy drawn from the body's 130 trillion cells and the spiritual energy cultivated through extensive training and experience combine perfectly to form chakra, the foundation ninjas use to perform ninjutsu."
Then Hyuga Wuye explained the most basic principles behind chakra extraction.
He had studied these principles over and over again back then, but while his mind understood, his body did not. There had always been some invisible barrier—until his breakup with Kushina, when everything finally clicked...
"Generally speaking, someone with talent for ninjutsu can extract chakra within half a month. A genius ninja can probably do it within three days," Hyuga Wuye said.
Yahiko asked curiously, "How long did it take you, Sensei?"
Hyuga Wuye remained expressionless and pretended not to hear him.
"Sensei definitely did it within three days. Lord Jiraiya said Sensei is a genius ninja renowned throughout the ninja world," Konan said as if it were obvious.
Nagato nodded in agreement.
Hyuga Wuye: "..."
"I extracted chakra!"
It did not take half a month at all. Half a day later, Yahiko cried out excitedly.
A moment later, Nagato opened his eyes as well. "I succeeded too."
Actually, under Hyuga Wuye's Byakugan, he could see that Nagato had extracted chakra long ago, almost the instant Wuye finished explaining the principles.
He was a true genius. He simply did not want to show off, so he waited until Yahiko succeeded before speaking.
All three