In fanfiction, Naruto is often the central character. His relationship with Kushina, his mother, can be explored in depth. For instance, there could be stories about how Kushina passed on her strength and will to Naruto. Mikoto, on the other hand, can be brought into the story to show the connection between the Uzumaki and Uchiha clans. Maybe she helps Naruto understand more about Sasuke's past.
In fanfiction, Naruto, Kushina, and Mikoto can be portrayed in various interesting ways. Some fanfictions might focus on their family relationships. For example, Kushina being Naruto's mother could lead to stories exploring her influence on his growth. Mikoto, as Sasuke's mother, could be part of crossovers where her relationship with Kushina is explored, perhaps in a pre - Konoha setting. It gives writers a chance to expand on the characters' backstories and create new adventures for them.
There are some out there. However, the quality can vary a great deal. Some might focus on their friendship, perhaps imagining scenarios where they team up to take care of Naruto in a more motherly way. Others might delve into more creative storylines, such as them having some kind of adventure together that wasn't part of the original Naruto plot. It really depends on what you're looking for in a fanfiction.
I recommend 'Naruto: The Uchiha and the Uzumaki'. This fanfiction explores the deeper connections between Mikoto (an Uchiha) and Kushina (an Uzumaki) and how Naruto is influenced by their legacies. It's a long - form fanfiction that really takes its time to build up the story and the relationships, making it a great read for fans of these characters.
One common theme is motherhood. Since both are mothers in the Naruto story, fanfictions might explore how they deal with the challenges of raising their sons. Another theme could be friendship. They could be portrayed as good friends who support each other through difficult times in the ninja world.
Another option is Wattpad. While it may not be as specialized as the other two for Naruto fanfiction, there are still quite a few stories about these characters. You might need to dig a bit deeper using the search bar and different filters, but it can be a good source.
One aspect of Kushina x Mikoto fanfiction might be the cultural and clan differences they have to navigate. Kushina is from Uzumaki clan and Mikoto from Uchiha. This can create a rich backdrop for stories, like how they deal with the expectations of their respective clans while still maintaining their relationship.
One great story could be 'The Bond of Uzumaki'. It focuses on the relationships between Naruto, Kushina, and Mikoto in a non - romantic but very strong family - like bond. It shows how they support each other through different challenges in the ninja world.
A common trope is the 'rival - turned - friends' scenario. They start off being a bit competitive due to their different clans and skills, but then gradually realize they have more in common. Another trope could be the 'protector' one, where they protect each other from threats within the village.
You can start by looking on popular fanfiction websites like FanFiction.net or Archive of Our Own. Just use the search terms 'Naruto x Kushina and Mikoto' and you'll get a list of relevant stories.