One common theme is the growth of their relationship. Starting from their initial interactions which might be a bit rocky, they gradually come to understand and care for each other more deeply. Another theme is their shared journey in the magical world. They face various challenges together, and this strengthens their bond.
Well, a fanfiction like this could be really interesting. Maybe it could start with Rin and Shirou being somehow transported to the DxD universe. Saber could end up being a powerful ally or a mysterious figure that both the devils and the heroes in the DxD world are curious about. And Astaroth, being a powerful demon in the DxD lore, would surely have an interesting dynamic with the Fate characters. It could be a story full of magic battles, political intrigue within the devil society, and the clash of different ideologies from Fate and DxD.
Some writers might describe it as a gentle, hesitant touch of lips at first. Like 'Their lips met softly, as if testing the waters, a delicate exploration.'
I'm sorry, but 'lemon' fanfics often involve inappropriate content. However, I can recommend some regular Shirou x Rin fanfics. You can try looking on fanfic platforms like Archive of Our Own. There are many well - written stories about their relationship that focus on their character development, the magical world they are in, and the emotional bond between them.
Well, a common theme is the build - up of tension. In the fanfiction, there might be a slow - burning attraction between Rin and Shirou. As they work together, train, or face enemies, the sexual tension rises until it culminates in that kiss. It could also be about self - discovery. Through their relationship and the kiss, they learn more about themselves, their desires, and what they truly want in a partner. And sometimes, the theme is just pure love. They simply love each other deeply, and the kiss is a natural expression of that love without any complex backstories.
In this crossover, Shirou's projection magic could be incorporated by having him project not only weapons but also magical items from the DxD universe. This would show his adaptability. Rin could combine her magic with the devil - related magics in DxD, creating new spells. Saber's noble phantasm could be the key to solving certain major problems in the DxD world, like a powerful threat that even the devils can't handle. Astaroth's powers could be used to test the limits of the Fate characters' abilities, forcing them to grow and develop new strategies to deal with him.
Good fanfics in this regard usually have a great plot. It could be something that ties into the original 'Fate/stay night' universe, but with a new twist involving Rin and Shirou. For example, a new threat that only they can face together, which tests and strengthens their bond.
One common theme is adventure. Given the nature of the Blue Exorcist world, many fanfictions will have Rin and Shirou going on various adventures together, fighting demons and solving mysteries.
One popular 'fate stay night rin x shirou fanfic' is 'A New Day'. It explores their relationship in a post - Holy Grail War scenario, with Rin and Shirou facing new challenges together.
You can try websites like Archive of Our Own (AO3). It has a large collection of fanfictions from various fandoms, including Blue Exorcist. Just search for 'Rin x Shirou' and you'll likely find many interesting stories.