In some fanfiction, there might be a scenario where they get into an argument over a decision regarding the SEES group. Maybe Mitsuru wants to take a more cautious approach while Makoto is eager to be more aggressive. But through this conflict, they learn to compromise and strengthen their bond as leaders of the group.
Their relationship often develops through shared battles. As they fight side by side against the Shadows in Tartarus, they start to trust each other more. They rely on each other's strengths, like Makoto's physical combat abilities and Mitsuru's strategic thinking.
One interesting plotline could be Makoto and Akira teaming up to take on a powerful shadow that the Phantom Thieves initially underestimated. They might have to use their combined Personas in a unique way to defeat it.
One good storyline could be an OC who is a new transfer student at Gekkoukan High School and quickly catches Mitsuru's attention due to their unique abilities in the Dark Hour. The OC could initially be a bit of an outcast but gradually forms a strong bond with Mitsuru as they work together to face Shadows. Another idea is a fanfiction where the OC has a special connection to Mitsuru's family history, perhaps uncovering secrets that were long forgotten and helping Mitsuru come to terms with her heritage. There could also be a storyline where the OC is from a rival organization but ends up falling for Mitsuru and has to choose between loyalty to their group and their new - found feelings.
One great story could be about their friendship evolving into a deeper understanding during a difficult mission in Persona 3. They might start to rely on each other more than ever, realizing how much they value one another's skills and personalities.
One possible storyline could be the three of them teaming up for a special heist in the Metaverse. They might use their combined Personas' powers in unique ways to overcome the Shadows. For example, Makoto's strategic mind, Akira's leadership, and Ann's charm could all play important roles in infiltrating a difficult Palace.
The character of Makoto is complex. In 'persona 5 makoto fanfic', we can explore different sides of her that the game might not fully show. For example, her relationships with other characters can be developed in new and exciting ways.
Well, their first encounter could happen in the library. The protagonist is looking for some information on the Metaverse and Makoto, being the studious type, is there already. She notices him searching through some rather strange books. Curiosity gets the better of her and she approaches him. He's a bit guarded at first, but as they start talking, they realize they might have more in common than they thought.
On their date in Tokyo, they could first go to a museum. Makoto loves learning and the protagonist would be happy to accompany her. They'd walk around, looking at the exhibits and discussing the art and history. Then, they'd go to a rooftop bar in Roppongi. They'd sit there, sipping on cocktails and looking out at the city lights. It would be a romantic and memorable day for both of them.
To write a compelling OC in relation to Mitsuru, first, give the OC a distinct personality. For example, if Mitsuru is more reserved and serious, the OC could be outgoing and humorous to create an interesting dynamic. Also, give the OC a unique backstory. Maybe they grew up in a different country or had a special encounter with a Persona at a young age that shaped their abilities. Their goals should also be clear, whether it's to become a strong Persona user like Mitsuru or to find a way to end the Dark Hour once and for all.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fan - created works, and you're likely to find some great 'persona 3 mitsuru x yukari fanfiction' there. Just use the search function to look for it specifically.