The OC could be a detective - in - training who is investigating a series of strange events in Natsumezaka. Shiki, having lived in the area all their life, becomes an important source of information for the OC. As they dig deeper into the mystery, they find themselves in dangerous situations. Their friendship blossoms as they rely on each other to solve the mystery and keep each other safe.
Imagine the OC is a gardener who is hired to transform a neglected garden in Natsumezaka. Shiki is intrigued by the OC's work and often comes to watch. The OC teaches Shiki about different plants and the art of gardening. As the garden starts to bloom, so does their relationship. However, there are setbacks like pests and bad weather that they have to overcome together.
In the fanfic, the OC could be a traveler who gets lost in Natsumezaka. Shiki finds the OC and offers to help. As they journey together to find the way out, they share stories. The OC tells tales of far - off lands they've visited, and Shiki shares the local legends of Natsumezaka. Along the way, they form a deep bond. Eventually, the OC decides to stay in Natsumezaka for a while longer, drawn by the charm of the place and the new friendship with Shiki.
One possible plot idea could be that the OC, a newcomer to Wonderland, meets Absalom. Absalom could initially be suspicious of the OC but as they journey through Wonderland together, they start to form a bond. For example, they might face the challenges of the Queen of Hearts' wrath side by side and in the process, discover new things about Wonderland and each other.
A mystery - themed 'the oc fanfic' would also be great. Maybe there's a mystery surrounding the Cohen family's wealth or a long - lost relative that suddenly shows up with a hidden agenda. The characters would have to work together to solve the mystery, and in the process, their relationships would be tested and new alliances formed.
One idea could be exploring an OC's (Original Character) journey to become a leader within the 100's post - apocalyptic world. They could start as an outcast and through their unique skills, like advanced medical knowledge or exceptional hunting abilities, gain the respect of different factions.
The fanfic could center around the OC being hunted by a group of powerful and menacing hunters who are after something the OC possesses. This causes the OC to be in a constant state of fear. Gon gets involved when he realizes the injustice of the situation. The story could then unfold with Gon and the OC trying to outwit their pursuers, all while the OC has to confront their fear of being caught and what might happen if they are.
One idea could be an OC who is a new villain in Middleton. This OC could have a unique power like the ability to manipulate technology remotely. They start causing chaos by hacking into all the city's systems. Another idea is an OC that is a long - lost relative of Kim and comes to live with her family. This OC has a different set of skills and gets involved in Kim's missions in unexpected ways. Or perhaps an OC who is an alien exchange student at Kim's school and has to hide their true identity while also helping Kim fight off intergalactic threats.
An OC could be a street artist in Ikebukuro who uses their art to tell the stories of the various gangs and groups in the area. This OC could interact with Celty as they both have an interest in the unique aspects of the city. They might start a project to document Celty's presence in a positive way, which could draw the attention of the Dollars and other factions.
One idea could be that your original character (OC) is from another planet similar to Krypton. They arrive on Earth and initially clash with Superman over different approaches to protecting the planet. But as they face a common powerful enemy, they learn to work together and combine their unique powers.
A cool plot could be an OC who has the ability to communicate with Titans in a different way than the normal Seeker. Instead of using the traditional methods, they can enter the Titans' minds and see their memories. This leads to the OC finding out about a hidden danger that threatens all of Huntik, and they have to convince the other Seekers to believe them and take action.
One idea could be an OC who has the power to manipulate time. They could accidentally get stuck in a time loop during a mission with the Incredibles and have to figure out how to break free while also helping the family stop the villain.