A battle that should have been a brilliant fight with the cooperation of Muye and others, but at the last moment, because of Kai's outburst, he became a one-man monologue.
Although we all know about Kai's strength.
However, the sudden outbreak of this kind of strength is not at the upper level of tolerance. Even Kakashi, who is very familiar with Kai, is shocked.
Not to mention Asma, Dahe and others.
The only exception should be that we don't know fire.
He once teamed up with Kai and Huibishou on the battlefield of Wuren, but he had witnessed Kai's father, who had been laughed at by the villagers for thousands of years