The plot could revolve around the Squib Harry trying to find his place in a world dominated by Voldemort. Severus, as his mentor, helps him navigate the dangerous political and social landscape. For instance, Severus could teach Harry how to blend in among the Death Eaters and gather information to undermine Voldemort's rule.
One possible plot could be that the Squib apprentice, despite not having magic, has a deep understanding of the magical world's history and lore. Severus discovers this and takes the Squib under his wing. Together, they might uncover some long - forgotten secrets about Hogwarts or certain potions. As they dig deeper, they face opposition from some traditional wizards who don't believe a Squib should be involved in such important matters.
One possible fanfiction could be where the Squib Harry is living in a very different Hogwarts under Voldemort's rule. Severus, as his mentor, might secretly be teaching him non - magical ways to resist the Dark Lord. For example, Severus could be training Harry in the art of stealth and intelligence - gathering within the castle, using his knowledge of the Dark Arts not to perform magic but to understand the enemy.
I'm not sure of a specific title, but there could be one where a Squib uses their knowledge of Muggle medicine to help heal injured wizards after the battle. Since wizards often have different medical needs compared to Muggles, this Squib's knowledge could be a unique asset in the post - WBWL world.
One common theme is self - discovery. Since Harry is a squib, he has to find his place in a magical world that he doesn't quite fit into in the traditional sense. Another theme is the relationship between Severus and Harry. Severus, as a potion master, might take Harry under his wing or have a complex relationship with him due to his status as a squib. Potions often serve as a medium through which their relationship develops or conflicts arise.
Well, in these fanfics, a key plot point is often Harry's journey of self - discovery. As a squib, he's not the 'Chosen One' in the traditional sense. This can lead to him exploring other aspects of his identity. Also, the way the wizarding world reacts to him is fascinating. Some might pity him, while others might see him as a threat or an oddity. And his relationship with the Dursleys could be very different too. Maybe they're even more cruel since he doesn't have magic to defend himself. Plus, there could be a plot point about him finding unique ways to contribute to the wizarding world despite not having magic, like through his knowledge of Muggle technology or his different perspective on things.
I'm not sure of a specific 'wbwl harry through to be a squib' fanfic off the top of my head. But you can try searching on popular fanfic platforms like Archive of Our Own. They usually have a wide range of fanfics with different themes and plotlines, and you might be able to find what you're looking for there.
I'm sorry I can't directly recommend a specific one off the top of my head. But like I said before, you should check out Fanfiction.net or Archive of Our Own. Just type in the relevant keywords and browse through the results. There are so many fanfics on these platforms that you're bound to find one that suits your taste.
There are indeed such fanfics. In some of them, the idea of Severus Snape being a squib while still having a connection to potions in a wbwl scenario can lead to really interesting storylines. For example, he might use his vast knowledge of potions in a different way than if he were a wizard. He could be an inventor or a consultant in the potions field, and the story could explore how his squib status affects his relationship with the magical world and Harry Potter in this alternate universe.
In this fanfic, Harry's life as a squib would be full of hardships. He is constantly looked down upon. Severus, as a potion apprentice, is trying to make a name for himself in a dark world. One day, Harry stumbles upon Severus's potion - making lair by accident. Severus is about to punish him, but then realizes Harry has an uncanny ability to sense the properties of ingredients without magic. This leads to them collaborating. They start by making potions to help the oppressed non - magical people in secret. As their relationship grows, they come up with a grand plan to overthrow Voldemort's rule, with potions playing a crucial role in their strategy.