One great fem Shirou Emiya x Archer fanfiction is 'A Different Bond'. It explores their relationship in a unique way, with really good character development. The story takes place in an alternate universe where their interactions are more intense and full of emotion.
One common theme is the power of love and how it can change both the Fem OC and Shirou. The OC might start as a regular person and through her relationship with Shirou, she discovers new aspects of herself. Another theme is the struggle against the forces in the Fate universe. They often have to face various challenges together.
Shirou's selfless and idealistic nature often clashes with Fem Gilgamesh's haughty and self - assured personality. In fanfiction, this can lead to some really interesting exchanges. For example, Shirou might try to appeal to Fem Gilgamesh's better nature, while she mocks his naivete at first. But over time, his unwavering beliefs could start to intrigue her.
The idea of a romantic or deep emotional connection between them in fanfiction is also quite appealing. Archer, with his past and his complex nature, and fem Shirou, with her own set of challenges and strengths, coming together in a relationship is something that many fans find fascinating. It can be a relationship full of mutual understanding, growth, and support, which is always a great thing to read about in fanfiction.
Another plot could involve a love triangle where Shirou is caught between his feelings for Fem Gilgamesh and another character. This would add a layer of drama and conflict as he has to navigate his emotions and the complex relationship dynamics. Fem Gilgamesh, with her pride, would also have to face the idea of competing for Shirou's affection.
His projection magic might be affected by the different magical rules in the Highschool DxD world. Maybe it becomes more powerful or has some new limitations. For example, projecting holy swords could have a different energy cost or be more effective against certain types of devils or fallen angels.
Well, it's very likely. Since Naruto and Shirou Emiya come from two different yet highly popular anime/manga universes. Fans love to create crossovers in fanfiction to see how characters from one world would interact in the context of another. Some of these fanfics might be really well - written and offer interesting takes on how Naruto could be like Shirou Emiya, perhaps in terms of their personalities, goals, or even their powers if some creative liberties are taken.
You can try fanfiction platforms like Archive of Our Own (AO3). It has a vast collection of fanfics, and you can use the search function to specifically look for 'Fem OC x Emiya Shirou' stories. Another option is FanFiction.net, though the tagging system there might require a bit more digging to find exactly what you're looking for.
Shirou would fit in as a powerful and unique addition. His combat skills and magecraft would make him a formidable ally or opponent. He could use his projection abilities to create various weapons and tools, which would be very useful in the battles that often occur in the Highschool DxD world.
The theme of redemption also pops up a lot. Shirou might have made mistakes in the past, and fanfics will show him trying to make up for those. Additionally, the exploration of his relationships, whether it's romantic or platonic, is a common theme. For example, his relationship with Saber is often a focal point in many fanfics.