One such fanfiction could be 'The Unexpected Alliance' where Draco surprises everyone by helping Harry in Diagon Alley and changing the perception of the Malfoy family.
You might want to check out 'Kindness in the Alley'. In this fanfiction, Draco helps Harry in Diagon Alley due to a hidden reason, which leads to a gradual softening of the Malfoys' image. The plot explores how this one act sets off a series of changes in their world.
There's a fanfic called 'Diagon Alley's Reconciliation' where Draco decides to assist Harry out of a sense of justice, presenting a nicer side of the Malfoys. The story builds on this unexpected act of kindness to develop a more complex relationship between the characters.
Well, in some fanfictions, it could be due to a powerful spell gone wrong that transfers the ownership to him. Maybe a spell meant to protect Diagon Alley's property rights backfires and suddenly Harry is the owner.
In the fanfic, it might lead to a tense confrontation. Harry could feel anger towards the Malfoys as they are known for their prejudice. Draco might taunt Harry as usual, and Lucius Malfoy could look down on Harry with his typical haughty attitude.
It could develop into more of an open rivalry. Harry might become even more determined to oppose the Malfoys after the Diagon Alley meeting. Draco, on the other hand, may feel more humiliated and thus bear a greater grudge against Harry.
He might have to deal with a lot of administrative work. Running Diagon Alley means taking care of all the shops, making sure the wizards and witches who work there are happy, and dealing with any disputes. For example, if two shop owners have an argument over a piece of land in Diagon Alley, Harry would have to step in and sort it out.
Maybe it's a new character created by the fanfiction author. This new character could have special abilities or a unique backstory that ties into the reason for escorting Harry to Diagon Alley.
Harry is strolling through Diagon Alley, looking for new robes. He bumps into Daphne near Madam Malkin's. Daphne gives him a cold look at first, but Harry smiles sheepishly. Then Daphne's expression softens a bit as she realizes it's Harry Potter. They start chatting about how difficult it is to find robes that fit just right, and Daphne mentions a little - known shop where she gets her best - fitting robes.
Well, one scenario could be that Harry meets a very strict tutor who specializes in Defense Against the Dark Arts. This tutor might push Harry to learn advanced spells and techniques right from the start. Another could be that he gets a tutor for Potions who has a really unique way of teaching, like using rare ingredients found only in Diagon Alley's hidden corners. Maybe the tutor is an old wizard who has a vast knowledge of magical potions and their history.
One possibility is that their meeting is not so friendly at first. Daphne, coming from a certain Slytherin - pure - blood mindset, might be a bit haughty towards Harry. But as they talk, Harry's kindness and honesty could break through her initial prejudice. They could end up having a deep conversation about the differences between the houses at Hogwarts, and how they both want to make the most of their time at school, despite their different backgrounds.
One idea could be a story about a young wizard who discovers a hidden, long - forgotten shop in Diagon Alley. Maybe it has magical artifacts that are tied to an ancient prophecy. Another could be a fanfic where a group of students start a secret club in Diagon Alley to practice a new form of magic that's not taught at Hogwarts. Or perhaps a story where a character has to solve a mystery involving a series of strange disappearances in Diagon Alley shops.
One common theme is the exploration of different magical sub - cultures within Diagon Alley. Since it's a hub of magic, Harry could be exposed to various types of magic that are not as prominent in the original series. Another theme could be his relationship with the magical creatures that are often found in Diagon Alley, like owls or the goblins at Gringotts.