One possible reason could be for speed. The Firebolt is known for its incredible speed in the Harry Potter series, and Harry might need it for faster travel between Hogwarts and other places, or for Quidditch matches to outrun his opponents more easily.
Harry is the main one, but other characters could be involved in different ways. Neville could accidentally stumble upon Harry's secret project and, in his clumsy but kind - hearted way, end up helping. Luna Lovegood might offer some out - of - the - box ideas with her unique perspective on magic. And Dumbledore, with his vast knowledge and wisdom, could be a guiding figure in the background, giving Harry some cryptic advice that helps him in the creation of the Firebolt.
Maybe he loves the idea of the Firebolt in the fanfiction. It could be that the stories expand on his experiences with the Firebolt in a really exciting way.
Well, it could be about Harry using his skills and magic knowledge to custom - create a super - powered Firebolt. Maybe he adds some unique enchantments to it for speed or stealth.
There's a fanfic where Voldemort curses the Firebolt, and Harry has to remake it using ancient magic and rare materials. The process is full of challenges and discoveries.
Maybe it's a story where a powerful curse affects the Firebolt, and Harry has to find a way to remake it to regain his edge in Quidditch and face other magical challenges. The focus could be on his determination and ingenuity.
The fanfiction might include some amazing races or battles on the Firebolt that Harry is really into. It could also show the Firebolt in a different time or place, like in a magical tournament in a far - off land. Plus, the fanfiction could give more backstory to the Firebolt, such as who made it and why it's so special. All these elements combined could be what makes it so appealing to Harry.
In some fanfictions, there could be a magical creature that has somehow found its way into the orphanage. For example, a house - elf might be there, either sent by someone to protect Harry or just lost. This house - elf could be a key character in the story, helping Harry with small tasks and providing some comic relief. There may also be a character from the Ministry of Magic who is sent to check on Harry's well - being in the orphanage, and this person could have their own motives and secrets.
There could be new types of magical creatures that have evolved or been discovered by 2110. Harry might interact with them, and they could either help or hinder his mission.