In many cases, visual novels are indeed rated by CERO. CERO provides a standardized rating system to determine the suitability of the content for different age groups based on various factors like violence, sexual content, and themes.
The main cast of " The Eldest Miss who overcame the thorns " included Xu Lu, Wei Zheming, Liu Xiening, Wu Chongxuan, Cheng Jinming, Deng Jinghong, Yang Shuyi, and Qin Fen.
I'm not entirely sure specifically what the 'cero essence anime story' is about as it's not a widely known common title. It could be a very niche or self - created anime concept.
In many anime stories, Cero Essence could be acquired through interactions with powerful characters or by uncovering hidden locations. Sometimes, it requires solving complex puzzles or fulfilling certain conditions related to the plot.
Since we know so little about the 'cero essence anime story', it's difficult to say who the main characters might be. However, in most anime, there are characters who are central to the plot because of their relation to the main concept. So in this case, if the 'cero essence' is important, there might be a character who discovers it, or perhaps a character who is born with it. There could also be antagonists who want to use the 'cero essence' for their own malicious purposes.
The following are some recommended novels: 1. " The Prisoner's Direction " by Wild Wind: This novel tells the pure love story between a blackened male lead and an albino male lead. 2. " Straight to Heaven " Author: Alev Zero: This novel described the story between a hidden big boss who pretended to be a pig to eat a tiger and an albino male protagonist. 3. " The Outlaw " by Cabikhu: This novel is about an albino male protagonist. No other relevant information was provided.