Shinji did not tell him to stop, so Naruto had no idea how much he needed to put in before he was done.
On top of that, remembering the mocking remarks he had heard outside the shop earlier, Naruto was determined to prove himself, so he poured a steady stream of chakra into it.
None of the others thought anything was wrong, either.
A Genin brat who had only recently graduated would probably have to drain every last drop of chakra in his body to meet the requirement!
He was probably just barely hanging on right now.
Quite a few people were waiting to enjoy the show.
But the scene they were looking forward to was one they were destined never to see.
When Shinji noticed Naruto's face beginning to flush, he immediately told him to stop.
Even if he was fleecing him, he could not go too far in one go. What if Naruto did not come back next time?
"Did I do it?" Naruto asked.
"Of course. Here's your 200,000 ryo."
"200,000 ryo?! Isn't this brat a Wind Release user? It should be 100,000 ryo," someone behind him immediately challenged.
"It's not just Wind Release. There's Yang Release, too, so I'm paying him 200,000. Is there a problem?"
The others immediately shut their mouths.
Whatever else they did not know, they had established only two things over the past two days.
First, that black box could detect chakra natures with absolute accuracy. Even if someone possessed only the tiniest trace of a particular nature, it could detect it.
Quite a few people suspected that all this chakra recycling was just a front, and the shopkeeper's real purpose was to test that black box. Perhaps in the future, chakra natures would be tested with this kind of specialized instrument