In private, simply speaking, it is to modify the characters in an animation or work twice, add your own ideas, and set up an additional version of the official role. It is called private settings because there are additional settings added by publishers on the basis of official settings. Most of these settings exist to satisfy personal imagination and are more personalized.
Introduction to cos
COS originated from the word COSPLAY, which means role-playing and animated reality show. Generally speaking, they play roles in animation, novels and so on.
COS is usually the abbreviation of cosplay, which is the abbreviation of clothing and drama, so coa literally means to play clothing, as the name implies, to play a role in film and television works. So cos usually refers to role-playing. People who play cos usually use clothes, ornaments, props and makeup to play the role of imitating the virtual world.
It is generally believed that cos originated in the United States, but it is popular in Japan. Cos means role-playing the role in animation. In recent years, with the growing circle of "Er Yuan", many people see people wearing strange clothes in the street.