Another theme is mutual understanding. Given their different personalities, fanfics often show how they come to understand each other on a deeper level. For example, Gojo's flamboyant nature and Shoko's more down - to - earth personality might seem at odds at first, but then they find common ground.
One popular theme is the exploration of their past relationship. Since they have known each other for a long time in the Jujutsu Kaisen world, fanfictions often delve into their shared history, like their time as students together.
Another place could be Wattpad. There are a lot of fans who post their fanfictions there. However, the quality may vary. You might need to spend some time sorting through to find the really good gojo x shoko fanfictions. Some stories might be more focused on their relationship development, while others could be part of a bigger plot within the Jujutsu Kaisen universe.
There's also 'Gojo and Shoko: Parallel Paths'. This fanfic focuses on how their individual growth as sorcerers affects their relationship. It shows how they both face different challenges but still find ways to be there for each other, adding a lot of depth to their connection.
Marin does confess to Gojo in the manga. It happens during a crucial moment when their relationship reaches a turning point. The confession is filled with honesty and vulnerability.