I really liked the fanfic 'A Chance Encounter with Law'. In this, the OC is a doctor in training, which creates an interesting dynamic with Law. It's full of medical jargon and their relationship progresses in a very natural way.
There's also 'Law and the Mysterious OC'. This one stands out because the OC has a unique power that draws Law's attention. The plot is engaging as they face various enemies together and their relationship blossoms from mutual respect to something more.
First, understand Law's character well. He's complex, so research his backstory, his goals in One Piece. For the OC, create a character that can fit into the One Piece world. For example, give them a relevant skill or a backstory related to the Grand Line.
First, consider the world of One Piece. The OC should have a backstory that fits within the pirate - filled universe. For example, if they grew up on an island known for its unique fighting style, they could have skills related to that. Second, give the OC a personality that would either complement or clash with Law's. If Law is more brooding and calculating, the OC could be more light - hearted and impulsive, creating an interesting dynamic.
A common theme is the exploration of their intellectual connection. Both Law and Robin are very intelligent characters, and fanfics often show them sharing knowledge or strategizing together.
One great Trafalgar Law time travel fanfiction is 'Law's Time - Bound Voyage'. It has an interesting plot where Law travels back in time and tries to change certain events in the One Piece universe. The story is well - written and the author does a great job of staying true to Law's character.
One idea could be that the OC is a healer who joins Law's crew. They start off butting heads because Law is so used to being in control, but gradually he comes to rely on the OC's unique healing abilities and they develop a deep bond.
There are definitely some great ones. A lot of these fanfictions explore how Law's devil fruit powers might interact in the wizarding world. For example, his 'Room' ability could have some really cool applications when it comes to spells and magical creatures. You might find some on platforms like Archive of Our Own.
One interesting Trafalgar Law OC fanfiction could be one where the OC is a doctor on his ship, adding a new dynamic to the medical team. They might have a unique backstory that ties into Law's past in some way.
There's also 'Law and Robin: A Shared Path' which shows their relationship development in a post - arc world. It focuses on how they both contribute to the crew with their unique skills while also having some really sweet interactions between the two.
There's a fanfic called 'Lopunny's New Friend'. In this, the oc is a young trainer who discovers an injured Lopunny. They form a strong bond as the oc nurses the Lopunny back to health and then they start exploring the Pokémon world together. It's full of heartwarming moments and exciting battles against other Pokémon.
One great 'newt x oc fanfic' is 'Newt's Unlikely Encounter'. It has a really interesting plot where the OC has a unique ability that draws Newt's attention. The story develops their relationship in a very sweet and believable way.