Well, 'chelle bliss' might be a relatively unknown element in Fantastic Fiction. It could potentially be a new author or a unique character concept that is not widely known yet. Maybe it's a pen - name for someone who has contributed to the Fantastic Fiction genre in a very niche or emerging way.
Well, clearly Chelle and Buffy are main characters. Chelle is often a new addition to the Buffy - verse, bringing her own personality and skills. Buffy, of course, is the slayer, the one who has the power and the responsibility to fight the forces of evil. There may also be other regular characters from the Buffy show like Willow and Xander who often play important roles in the fanfic as well.
Another interesting one is 'Chelle's Secret in the Buffy World'. In this fanfic, Chelle has a secret power that she has to hide from everyone, including Buffy at first. As the story unfolds, we see how she struggles with this secret while still trying to help Buffy and her friends in their battles.
Again, without knowing the exact Lilly Manning story, it's hard to say its significance. But generally, a story can be significant if it teaches a moral lesson, like kindness or perseverance.
Well, in many 'Astrid and Lilly Save the World' fanfics, they often expand on the unique friendship between Astrid and Lilly. Some fanfics might focus on their adventures that were only hinted at in the show. They can be really creative in coming up with new monsters or challenges for the duo to face.
I'm not sure specifically which 'Lilly Collins ghost story' you mean. There could be many fictional or personal accounts related to her and a ghost story. It might be a story she told in an interview, or a fictional piece she was involved in.
Definitely not. Such fanfiction that contains sexual elements is not suitable for general consumption. It can also be disrespectful to the original work and its intended audience, which is usually more interested in positive and proper character development and storylines.