Well, it could be about many things. It might be a story where Shirou has an encounter with a character named Blue. Maybe it's an adventure they go on together, or a situation where they meet by chance and their lives change in some way. Without reading it, it's hard to say exactly.
Well, if the 'shirou meets blue fanfiction' focuses on a particular aspect like a certain type of magic or a specific location, you can search for fanfictions that share those elements. Maybe look for fanfictions where Shirou is in a similar setting or dealing with the same kind of magical elements. Also, check out fanfictions by the same author if they have written other works. They might have a similar style or theme that could be interesting.
A common theme is friendship. Often, Shirou and the dragon start off as strangers or even enemies, but gradually form a strong bond of friendship. Another theme is power. The dragon usually represents a great source of power, and Shirou may either gain some of that power or learn how to control it.
The theme of redemption can also be present. Mordred, with her complex backstory, might find a form of redemption through her interactions with Shirou. Shirou, with his kind - hearted nature, could be the catalyst for Mordred to re - evaluate her actions and beliefs, which is often a central aspect in many 'Shirou meets Mordred fanfiction'.
One common theme is the discovery of new relationships. Since they are from different backgrounds in the original context, when they meet, it's about exploring a new connection.
The main characters are clearly Shirou and Zelretch. Shirou is often known for his heroic ideals and his journey in the world of magic and heroism. Zelretch, on the other hand, is a very powerful and mysterious mage.
In the 'shirou meets zelretch fanfiction', Shirou might learn some unique magic from Zelretch. Since Zelretch is a powerful mage, he could have a great influence on Shirou's growth as a mage.
Perhaps in the fanfiction, Shirou meets the Lady of the Lake during a time of crisis. She could offer him guidance on how to overcome the difficulties he's facing, like dealing with powerful enemies. The story might also explore their relationship, whether it's one of mentorship or something more mysterious.