In many 'gojo and utahime fanfic', a frequent theme is the power dynamic. Gojo is extremely powerful, and Utahime has her own abilities. Fanfics play with how this power difference affects their interactions. Also, the theme of hidden feelings is quite common. They might not show their true emotions openly, and fanfics like to dig into that and bring those feelings to the surface. Moreover, the theme of teamwork and how they can rely on each other in difficult situations is also often explored.
One great 'gojo and utahime fanfic' is 'The Unlikely Bond'. It explores their relationship in a really interesting way, showing how they might interact beyond their usual roles. Another one could be 'Gojo and Utahime: A Different Perspective' which gives a fresh take on their characters and how they could be more than just colleagues.
One popular 'gojo x utahime fanfiction' might be those that focus on their interactions during a dangerous mission. For example, a story could be about how Gojo and Utahime have to work together to defeat a powerful curse. They start off bickering as usual but gradually realize their feelings for each other through the hardships they face.
Fanfiction.net is a great place to start. It has a large collection of fanfictions, and you can easily search for 'gojo x utahime' within the site. There are different categories and filters you can use to find the type of story you like, whether it's a long, multi - chaptered epic or a short, sweet one - shot.