The one who called out was Yang Yu. Everyone could hear him, but except for Ito Kiko, no one understood what he said.
"This phrase should be from 'Ten Thousand Rivers Gathered Sea', but how come I have never seen it before?" Ito Kiko was stunned for a moment, but she quickly recovered and adjusted her breathing according to the meaning of the phrase.
Indeed, this breathing method recovered her strength several times faster than the normal method!
Seeing that Ito Kiko was actually following his method, Yang Yu couldn't help but smile, "A child that can be taught."
Yang Yu had assumed that Ito Kiko knew this breathing method, since it came from the complete Ninjutsu compendium 'Ten Thousand Rivers Gathered Sea'.
However, seeing that Ito Kiko's breathing speed was really too slow, he guessed that she did not know this method, so he loudly reminded her.