I'm not sure specifically what that particular 'fanfiction' is about as it's not a common or positive theme in the official Percy Jackson universe. Fanfiction can vary widely, but this title seems rather inappropriate and not in line with the positive and heroic themes usually associated with Percy Jackson.
Definitely not. In the Percy Jackson fandom, fans are usually more interested in stories that expand on the adventures of the demigods, their relationships, and their battles against the forces of evil. The idea of 'percy jackson toliet slave fanfiction' is so far from the positive and exciting themes of the original that it would be shunned by most fans. It's not something that would gain popularity as it goes against the very essence of what makes the Percy Jackson stories so great.
Well, it depends on which version of the manga you're referring to. In some continuations or alternate storylines, Hanako might not die. But in the main canon, unfortunately, Hanako does meet his end.
A Hanako visual novel could be about various things. It might revolve around Hanako's personal growth, her experiences in a particular setting like a school or a small town. It could also be a love story where Hanako is the central figure, dealing with her feelings towards other characters. The visual elements would enhance the storytelling, with illustrations that bring the story to life.
Well, the Hanako ghost story mainly revolves around a spooky apparition named Hanako. She is typically associated with school restrooms, especially in the old, dilapidated ones. People believe that she is a spirit of a girl who met an unfortunate end in the school. Many kids in Japan grow up hearing about this story, and it adds an element of mystery and fear to school environments.