Why did Kawaki end the ninja era?

Because Kawaki became a villain. At the beginning of The Story of Bobo, the boy named Kawaki said something that shocked everyone. He said: The era of ninja is coming to an end. Naruto's mother came from Vortex clan, but she married Namikaze Minato. As a result, the blood of the already scarce whirlpool clan began to be impure. Naruto himself is only half the blood of the whirlpool family, and the whirlpool blood contained in Bo people's generation is even less.

Not only the whirlpool clan, but also powerful families such as Qianshou, Neiguang, Ape Fei and Sunward are all in this situation. Now the blogger with impure blood and Zuo Liangna have developed into a love relationship, which is even more unique.

Extended data

On the way to Fengguo, Bo people met an uncle who hated ninjas. In the conversation with this uncle, it is obvious that Kawaki did this because of the disaster brought by the Fourth Endurance World War. The uncle was just an ordinary man, but he happened to meet the endurance world war, because this war led to the destruction of his hometown.

It is not the enemy who destroys his hometown, but the ninja in his own country. Their purpose is to destroy the places where the enemy may hide. It is precisely because of this ninja concept that uncle hates ninjas. Without these ninjas, his home would not be destroyed. Kawaki was an ordinary person when he was a child, and his parents were probably killed by ninjas.