A 5x7 fanfiction for 'kiss him not me' might focus on a particular moment. For example, a 5x7 photo that holds a special memory for the characters. It could be a photo of a group outing, and in the fanfiction, the details of that day are explored, how the relationships between the characters developed based on that one moment captured in the 5x7 photo.
Perhaps it's a 5x7 painting. A character in 'kiss him not me' creates a 5x7 painting that somehow represents their feelings for another character. This painting then becomes a central point in the fanfiction. Other characters might see it and misinterpret it, or the intended recipient might be deeply touched by it. This could lead to a series of events where feelings are revealed and relationships are either strengthened or put to the test.
One great fanfiction could be where Mutsumi and Shinomiya go on a trip together. They might start off as friends but gradually realize their deeper feelings. It could include sweet moments like sharing an umbrella in the rain and stealing glances at each other.
Another trope is the 'forced proximity'. Maybe they have to share a small space for some reason, like being locked in a library or a storage room. This closeness makes them more aware of each other's presence and leads to the development of their relationship.
One idea could be that Nanashima and Kae go on a school trip together. During the trip, they get separated from the group and have to rely on each other. This forces them to face their feelings for each other more directly. Another plot could involve a misunderstanding. Maybe Kae thinks Nanashima likes someone else, and Nanashima has to find a creative way to show her that he's actually into her. For example, he could write her a song or create a special art piece just for her.
One common theme is the exploration of unrequited love. Often, either Nana or Igarashi might be pining for the other while thinking their feelings are not reciprocated. This creates a lot of tension and drama in the fanfics.
One popular 'kiss him not me nana x igarashi fanfic' could be 'A Chance Encounter'. It focuses on the unique relationship between Nana and Igarashi, with some really sweet and awkward moments that are very true to their characters in the original work.
Nanashima could be the type to take risks in the relationship. He might be the one to initiate the first move, like asking Igarashi out on a date. Igarashi, though, would be the one to think things through carefully. He might worry about how their relationship would affect their school life and friendships, but eventually give in to his feelings for Nanashima.