One common theme is Naruto highlighting Sasuke's pride. Naruto often uses Sasuke's over - the - top pride as a target for his roasts. For example, he might make fun of how Sasuke always thinks he's better than everyone else in terms of skills.
In a Giyuu x Shinobu fanfic, the setting and plot can vary widely. Some might be set during the main events of the Demon Slayer universe, with them facing demons together. Others could be more of an alternate universe story, where they meet under different circumstances, like in a modern - day high school AU. The fanfic could also delve into their backstories and how those experiences shape their relationship. For instance, Shinobu's past with her sister could play a role in how she opens up to Giyuu, and vice versa for Giyuu's own traumas.
I would recommend 'Whispers of the Heart' for Giyuu x Shinobu fans. This fanfic focuses on their unspoken understanding. It's full of small moments that build up their relationship, like when Shinobu leaves a small flower on Giyuu's doorstep as a sign of her care. Also, 'Shadows and Sunlight' is worth checking out. It has a great plot that involves them having to go on a secret mission together and how that journey changes their relationship from colleagues to something more intimate.
In some 'naruto roasts sakura fanfiction', Naruto might roast Sakura about her always chasing Sasuke. For example, he could say something like 'You're so blinded by Sasuke that you forget about the real things around you.'
Another great one is 'Naruto's Epic Roast of Sasuke'. In this fanfiction, Naruto roasts Sasuke during a training session. He makes fun of Sasuke's brooding nature and how he always tries to act so cool. Naruto uses his own experiences and the times they've spent together to come up with some really cutting - edge roasts that leave Sasuke both angry and a bit embarrassed.
One common theme is the exploration of their relationship. Given their different personalities in the original work, fanfictions often focus on how they bridge the gap between them, like how Giyuu's stoicism and Shinobu's more cheerful yet calculating nature interact.