Yes, they could be. In the world of Fantastic Fiction, there are various characters with different names. Noelle and Giselle are both names that could potentially be characters within the realm of a Fantastic Fiction story. It depends on the specific work of fiction.
Noelle's character in Black Clover fanfiction can also be the center of character - driven stories. Her noble background and her insecurities due to her lack of full control over her magic in the beginning can be delved into deeply. Fanfic authors may write about how she overcomes these insecurities and rises to be a more confident and powerful mage, which is really exciting to read.
I don't think so. Hentai comics have specific adult content, and there's no indication that 'Is it really you Noelle' falls into that category. It could be a fantasy or adventure comic instead.
One popular theme is her friendship and teamwork. Since Black Clover emphasizes the importance of the squad, fanfictions often explore how Noelle bonds with her teammates, like Asta and the others. They might go on missions together, and these stories show how their relationships develop and strengthen.
I think her work on Fantastic Fiction has a degree of popularity. She is able to create vivid worlds and believable characters. For example, in some of her stories, she weaves in elements of mystery and romance, which makes her works stand out. Her use of language is also quite appealing, making it enjoyable for readers who like this kind of literature.
In the manga, Asta and Noelle's relationship progresses gradually. They face many challenges together, and eventually, their feelings for each other blossom into a romantic connection.
As of the latest manga chapters, Asta and Noelle haven't gotten together. Their relationship is still evolving and it's unclear if they will end up as a couple in the future.