In The Twelve Kingdoms, there are many reasons why Yoko lost his way.

First of all, Yoko's character is flawed. Yoko is a cruel and stupid king, and these characteristics lead to many problems in governing the country.

Secondly, Yoko lacks correct guidance and education during his growth. As the king of a country, Yoko did not receive systematic education and training before he ascended the throne, which made him unable to handle state affairs.

In addition, Yoko lacks firm belief and determination in the face of difficulties and challenges.

Finally, Yoko also made mistakes in dealing with other countries.