Yes, there are quite a few great Demon Slayer Giyuu x Shinobu fanfictions. You can find them on various fanfiction websites like Archive of Our Own. Some of these fanfictions explore their relationship in different ways, such as how they might interact during a mission or how their feelings for each other develop over time.
One common theme is the development of their relationship. It often starts from a place of mutual respect as fellow Demon Slayers and then progresses into something more like friendship or even romantic feelings. Another theme is how they support each other during battles. Since they both have their own strengths and weaknesses, they can complement each other well in combat scenarios in fanfiction.
There are fanfictions where Shinobu and Giyuu are paired in a post - demon - slaying world. For example, they might start a new life together, perhaps helping to rebuild the demon - slayer corps in a different way. Shinobu's medical knowledge and Giyuu's combat skills could be combined in interesting ways in these stories.
You can find 'demon slayer shinobu x giyuu fanfiction' on popular fanfiction websites such as Archive of Our Own (AO3). There are a large number of fan - created stories there, and you can search for specific pairings like Shinobu and Giyuu. Just type in their names in the search bar and you'll get a list of relevant fanfictions.
The plot could involve the reader being a new Demon Slayer. Shinobu takes the reader under her wing to train. They could go on missions together, and the reader slowly discovers Shinobu's kind heart beneath her often - aloof exterior. Along the way, they face various demons and grow closer as friends and comrades.
To write their relationship development, consider their different personalities. Shinobu is calm and collected, while the reader can have various personalities. If the reader is shy, Shinobu can take the lead in conversations. As they face challenges together, like fighting a powerful demon, their trust in each other will grow. You can also add some light - hearted moments, such as cooking together in the Butterfly Mansion, which will make their relationship more multifaceted.
I would recommend 'Douma's Secret Admirer'. In this fanfiction, the reader is a shy character who secretly admires Douma from afar. It's full of cute and endearing moments as the reader tries to get closer to Douma without being too obvious. It's a really heart - warming read.
Common themes in douma x kotoha fanfic can include redemption. Maybe Douma has some past actions that he needs to make up for, and Kotoha plays a role in that process. Also, there is often a theme of self - discovery. As they interact more, they learn more about themselves through the eyes of the other. This can be a very interesting aspect to explore in these fanfics as it adds depth to both characters.
Fanfiction.net is also a classic site for finding 'Douma x Reader Fanfiction'. It has been around for a long time and has a vast amount of content. However, the search function might not be as advanced as AO3, but with a bit of patience and browsing, you can still find some excellent stories.
The fanfiction might also play with the idea of redemption for the female demon. Since the Doom Slayer is often associated with justice, perhaps he sees some potential in her to change. It could be a story of her trying to break free from her demonic nature with the help of the Doom Slayer. Their relationship could develop from pure enmity to something more complex, like an unlikely alliance or even a romantic connection in a more extreme take on the story.