One idea could be exploring Archer's internal struggle more deeply. Maybe show his memories of past battles and how they affect his decisions in the Fourth War. Another could be to create a scenario where Archer has to team up with an unexpected character from the Fate universe.
A great plot idea for a 'Fate Stay Night Emiya Archer Fourth War' fanfic would be to explore an alternate timeline. In this timeline, Archer's actions in the Fourth War have far - reaching consequences that completely change the Fate universe as we know it. Maybe his actions lead to a different set of masters being chosen, or a new Holy Grail War system being implemented. This would allow for a lot of creativity in terms of character development and world - building. You could also explore how Archer's past experiences in his own timeline influence his actions in this new, alternate Fourth War.
However, some fanfics in this genre can have their drawbacks. Sometimes they might deviate too much from the established lore of the Fate universe. But if done right, like in this case potentially, it can add a new layer of depth to the story. It could introduce new plot twists that keep readers on their toes, and the character development of Archer could be taken to new heights, exploring his past and how it affects his actions during the Fourth War.
How about adding some characters from the Fate/Extra series? For instance, Nero. Her strong - willed personality and combat skills would surely spice things up when paired with Archer in the Fourth War. And then there's Tamamo - no - Mae. Her charm and tricky nature could lead to some really engaging storylines involving Archer.
The unique take on Archer's character. He's a complex character, and in this fanfic set during the Fourth War, we might see different aspects of him.
One interesting Archer fanfiction could be 'Archer's Redemption'. In this story, Archer has to face his past mistakes in a new and unexpected way. It delves deeper into his character, exploring his internal conflicts and how he tries to make amends for what he has done in different timelines. Another great one is 'Archer and the Lost Grail'. This fanfic takes Archer on a quest to find the true meaning of the Grail, which is different from the typical Grail War scenarios we see in the original work. It's full of mystery and adventure.
Well, perhaps the Pokeballs in this fanfic could be like the Command Spells in Fate Stay Night. A trainer might use a Pokeball to summon and control a powerful 'Pokemon - Servant' hybrid. And the different regions in the Pokemon world could be the battlefields for the Grail War. The trainers would travel around, catching and training their unique Pokemon - Servants while competing for the Grail.
Another idea is to create a story where the rules of the Grail War are changed. For instance, instead of seven Servants, there are only three, and they have to complete different tasks to win. This would completely change the dynamics of the story and lead to new and exciting interactions between the characters.
A fanfic that stands out in the Fate Stay Night Fourth War genre is 'The Servant's Lament'. It tells the story from the perspective of a Servant who has complex emotions about being in the war. 'Beyond the Fourth War' is also interesting as it looks at the long - term consequences of the Fourth War on the world of Fate. And 'Fourth War Resonance' explores the relationships between the Servants and Masters in a more emotional and in - depth way.
A plot could be that Mordred is summoned by a powerful ninja as a last - ditch effort to fight against an ancient evil that has emerged in the Naruto world. This evil has powers similar to some of the powerful Servants in Fate Stay Night, so Mordred's expertise is needed.
Well, perhaps in this fanfic, Emiya has to face some moral dilemmas during the fourth war. He might be forced to make choices between saving civilians and achieving his goals in the war. Also, his relationship with his Master could be explored in a new light. What if his Master has a hidden agenda that conflicts with Emiya's own sense of justice? That would surely add a lot of drama to the story.
One common theme is the struggle for the Grail. In many fanfics, the characters are deeply motivated by the desire to obtain this powerful and mysterious object. Another theme is loyalty and betrayal. Servants may have to choose between their loyalty to their Masters and their own ideals, leading to situations of betrayal. Also, the exploration of the Servants' pasts is a frequent theme. Many fanfics dig deeper into the backstories of the Servants to add more depth to their characters.