One possible fanfic could be 'The Loss of Crookshanks' on Fanfiction.net. It really delves into Hermione's grief when Crookshanks passes away. The author does a great job of showing her emotional turmoil.
One possible plotline could be Hermione trying to find a way to bring Crookshanks back. She might search through ancient magic books in the Hogwarts library, desperate for a solution. Another could be her reflecting on all the memories she had with Crookshanks, like when it helped her and Harry figure out things. She could also become withdrawn from her friends for a while as she mourns, and they would have to find a way to reach out to her.
A fanfic named 'When V Cried' is quite well - known. It focuses on a fictional scenario where V gets some really harsh criticism from the public. He tries to be strong but eventually breaks down and cries. The fanfic then goes on to show how his crying is not just about the criticism but also about the weight of expectations that he has been carrying all along.
One popular fanfic could be 'The Tear of Yoongi'. In this fanfic, Yoongi's character is often shown with deep emotions that lead to crying. It really delves into his internal struggles and how he overcomes them. The writer does a great job of portraying his vulnerability, which is really touching.
You can start by looking on fanfic platforms like Archive of Our Own (AO3). It has a large collection of Harry Potter - related fanfics, including many focused on Hermione and Crookshanks. Fanfiction.net is also a good place to search. There are likely to be some great stories about them there as well.
One popular fanfiction with this concept might be 'The Unlikely Protector'. In it, a reformed Death Eater finds himself drawn to protect Hermione from various threats within the wizarding world. It's an interesting take on how characters from opposing sides can form an unexpected bond.
There's a fanfic where a group of Death Eaters end up saving Hermione because they realize she holds the key to a greater power that could benefit them in the long run. They protect her from other dark forces in the wizarding world. It's an interesting take on the relationship between the 'bad guys' and Hermione.
It could also be a new character introduced in the fanfiction. This character might be someone with a special charm, perhaps a very intelligent and kind wizard who Crookshanks senses has a lot in common with Hermione. For example, he could be a wizard who is also very interested in books and knowledge, just like Hermione, and Crookshanks decides he is the perfect match for her.
A 'lemon' fanfiction usually implies some romantic or spicy elements. In the case of Hermione and Crookshanks, it could be a really strange one. Maybe it's about how Crookshanks, in a magical and very fan - fictional way, has some sort of emotional connection with Hermione that goes beyond the normal pet - owner relationship. It could involve some sort of magical bond that makes their interactions more intense and emotional, but in a non - traditional way since Crookshanks is a cat.
I'm not sure of the exact title, but there are some fanfics on platforms like Wattpad where a fan cries when she gets a chance to talk to Harry Styles. You can search using keywords like 'Harry Styles', 'fan crying' on Wattpad to find some great reads. These fanfics often explore the dream - like experiences fans have when interacting with their idol.
One interesting fanfic could be 'The Dark Apprentice'. In this story, the Death Eaters' training of Hermione is a complex process that involves her learning dark magic but also finding ways to subvert their plans from within. It's a thrilling read as it shows Hermione's intelligence being used in a very different context.