I'm not sure about specific 'shindou x deku fanfiction' titles off - hand. But you can try searching on popular fanfiction websites like Archive of Our Own. They usually have a wide range of fanfictions for different pairings, and you can filter by tags to find ones related to shindou and deku.
Some fanfictions explore the theme of loyalty. They might face situations where they have to choose between each other and something else, like a different team or a personal ambition. And the way they handle that, staying loyal or having to work through a moment of doubt, is a common plotline. Also, the theme of discovery, like finding out new things about each other that they didn't know before, can be quite prevalent in these fanfictions.
I'm not sure about specific shindou takuto x kirino ranmaru fanfiction titles off the top of my head. However, you could try looking on fanfiction.net as well. Maybe start by using the search bar and typing in both of their names. Look through the summaries of the stories that come up to see if they match what you're looking for in terms of the relationship between the two characters.
Realistically, their relationship could develop through mutual respect for each other's skills. For example, if Akane is good at academics, she could help Shindou with his studies. In return, Shindou could teach her about soccer strategies. This exchange of knowledge and support would create a bond between them.
Another plot could be that Akane gets injured while trying to help the soccer team. Shindou feels responsible and takes it upon himself to take care of her. As he nurses her back to health, they spend a lot of time together and start to realize that they have more in common than they thought. This could be the start of a romantic relationship as they open up to each other about their pasts and hopes for the future.
One great place to start looking for 'Inazuma Eleven Go Shindou x Kirino' fanfic is Archive of Our Own (AO3). There are many talented writers in the fandom who create interesting stories about their relationship. You can also check out fanfiction.net, although the selection might be a bit more limited compared to AO3.
Online platforms are also a great option. Websites like Amazon or other e - book platforms may have the digital version of this light novel available for purchase or even for free if it's in the public domain.
In Inazuma Eleven fanfiction, Shindou and Kirino often have a strong bond. They are teammates, and their relationship can be seen as one of mutual respect. Shindou's leadership skills might influence Kirino, and Kirino's loyalty and skills on the field contribute to the team dynamic that Shindou values.