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.
It's a type of visual novel that likely focuses on a character named Yoosung. Usually, it involves a story with various plotlines such as relationships, personal growth, and perhaps some sort of adventure or mystery. However, without more specific information, it's hard to say exactly what it's about.
Well, generally, yoosung lemon fanfic often focuses on the character Yoosung in a romantic and sometimes more adult - themed context. The 'lemon' part usually implies some form of sexual or romantic intimacy. These fanfics might have a strong focus on Yoosung's personality traits, like his shyness or his passionate side. They also tend to be set in the world of the original work that Yoosung is from, so the settings and other characters might play important roles in the story as well.
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.
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.