Well, it could mean there's an opportunity or possibility for a typical Harry Potter fanfic. A 'normal' one might follow the general style, themes, and world - building of the original Harry Potter series without going too far off - track with wild or out - of - character interpretations.
Creating a normal Harry Potter fanfic starts with understanding what makes the original series so beloved. It's the characters, the magic, and the sense of wonder. When writing, focus on the main elements. For instance, Hogwarts is a key location, so make sure to describe it accurately. Don't go overboard with changing the established lore. Keep the house rivalries, the Quidditch matches, and the classes as they are in the original. You can add your own minor characters, but they should blend in with the existing world. And most importantly, keep the moral and ethical themes that are present in the books, like the importance of friendship and standing up against evil.
It could be about a character in the Harry Potter universe getting an opportunity to find true happiness. Maybe it's about a character who has been through a lot of hardships, like Harry himself, finally having a chance to have a peaceful and happy life after all the battles.
It might be a fanfic where the writer creates a new scenario for the characters to have a shot at happiness. For example, if in the original series a character lost a loved one, in this fanfic they get a second chance. It could involve magic being used in creative ways to bring about this chance at happiness. It could also explore different relationships in the wizarding world and how they can lead to happiness.
The plot of 'A Chance at Happiness' could involve Harry Potter encountering a magical object or person that changes his life for the better. It might also have him solving a mystery or overcoming a long-standing fear to achieve that happiness.
The fanfic 'A Chance for Happiness' typically involves Harry facing some kind of challenge or situation that leads him to a path where he can achieve a state of happiness. This could involve solving a mystery, making new friends, or uncovering hidden magical powers.
A normal Harry Potter fanfic usually stays true to the general themes and settings of the original series. It could be a story that fills in the gaps in the original story. For instance, what happened during the summers that weren't fully described in the books? Or it could be a 'what - if' scenario. What if Harry had been sorted into Slytherin? These fanfics allow fans to use their imagination and expand on the world that J.K. Rowling created. They can also be a way for fans to express their love for the series by creating their own tales within the magical world.
Well, Sirius in normal fanfic usually stands out for his unwavering loyalty to Harry. He is a symbol of hope for Harry, especially after he escapes from Azkaban. His backstory, including his time with the Marauders, is often explored in detail. Fanfic writers might also emphasize his struggle with the wizarding society that wrongly accused him, and his determination to clear his name while looking after Harry at the same time.
A 'not normal harry potter fanfic' might also change the whole setting. Instead of Hogwarts being in Scotland, it could be floating in the air or underwater. The houses could have different characteristics. For instance, Gryffindor could be known for their stealth rather than their courage. And the story could focus more on the minor characters and give them major roles that completely change the dynamic of the story.
There's also a possibility that a new character is introduced as the main character. This new character could be someone who has the power or the ability to bring about the chance for happiness for others in the wizarding world. They might have a unique magic or a special mission that is centered around spreading happiness.