Definitely not. Lookism is a work of fiction. The plot and scenarios were crafted by the creator to tell an interesting and captivating story, not drawn from real events or people.
In the absence of knowledge about the 'Big Mouth Vader Johan' story, Big Mouth could be a descriptive name for a character who is overly chatty or has a unique oral feature. Vader might be related to the idea of a strong, authoritative figure, similar to the Star Wars character Darth Vader. Johan might be a common name for the protagonist in this story. It's possible that these three elements - the talkative Big Mouth, the powerful Vader - like figure, and Johan - interact in various ways within the plot of the story, but without the story itself, it's hard to be certain.
Irregular manhwa lookism often features unique art styles and unconventional character designs. It might also have unexpected plot twists and a focus on social issues.
The full content of Lookism manhwa is quite extensive and involves various storylines and character developments. It's a complex and engaging narrative.
Well, from what I know, the 'lookism light novel' focuses on the concept of how one's appearance can shape their lives. It could have a main character who is constantly judged by how they look. This character then might go through a journey of self - discovery, trying to break free from the constraints of this look - based society. There might be different sub - plots involving the character's relationships with others who are also affected by lookism in various ways.