One possible fanfic could be where Oliver Wood gets injured during a particularly rough Quidditch match against Slytherin. Maybe he's hit by a Bludger that was jinxed by the opposing team. His injury could lead to a young Gryffindor player having to step up and take on the role of the Keeper, facing great pressure and self - doubt as they try to fill Wood's shoes. This could also cause a rift in the team as some blame the new Keeper for not being as good as Wood right away.
You can find 'Harry Potter and Oliver Wood fanfic' on fanfiction.net. It has a large collection of fan - created stories related to the Harry Potter universe, including many focused on the relationship between Harry and Oliver. Another place is Archive of Our Own (AO3). It's known for its wide range of fanfiction, and you're likely to come across some great stories about them there.
In a fanfic where Oliver Wood is injured, it could lead to a change in the dynamics of the Gryffindor house as a whole. Since Quidditch is such an important part of Hogwarts life, the students would be talking about Wood's injury all the time. Some might even start to lose faith in the Gryffindor Quidditch team. The team itself would have to work harder to regain their confidence. And Wood, while injured, could be a source of inspiration for the team, showing them how to be strong even when facing setbacks.
One great 'Harry Potter and Oliver Wood fanfic' is 'The Captain's Legacy'. It delves deep into Oliver's post - Hogwarts life and how his experiences with Harry still influence him. Another interesting one could be 'Wood's Wisdom', which focuses on Oliver passing on his Quidditch strategies to the younger players at Hogwarts. There's also 'Friendship on the Pitch', which shows the strong bond between Harry and Oliver through their shared love for Quidditch.
I'm not sure exactly as this seems like an inappropriate and unethical concept. Pokémon is a family - friendly franchise, and such a title goes against its intended nature.
One common theme is the exploration of forbidden love. In the wizarding world where there are strict social norms, their relationship goes against the expected. Another theme is friendship turning into love, as they start from being teammates on the Quidditch team.
It could be a jealous Quidditch player from another team who wants to ruin Oliver Wood's reputation as a great Quidditch player and captain. This player might try to frame Oliver for cheating or use dark magic to disrupt Gryffindor's Quidditch matches.
One popular 'Harry Potter and Oliver Wood gay fanfiction' is 'The Quidditch Captain's Heart'. It beautifully explores their relationship in the magical world of Hogwarts, with great character development.
You can start by looking on Archive of Our Own (AO3). It has a vast collection of fanfiction, and you can easily search for Harry Potter Oliver Wood slash stories there.
There's also 'Wood's New Team'. In this fanfiction, it explores how Oliver Wood's leadership skills on the Quidditch team are intertwined with his relationships. It has great character development and some really interesting plot twists.