A frequent theme in these fanfictions is the exploration of new identities. Kirito, being in a different world, has to re - define himself, and the Fate characters also see him in a new light. Teamwork is another big theme. They have to work together to face the challenges of the Grail War or other threats in the Fate world. And of course, the theme of heroism. Kirito's heroic nature from Sword Art Online and the heroic ideals in Fate/stay night are often compared and combined in these stories. For example, in some fanfictions, Kirito takes on the role of a hero in the Grail War, much like the Servants in Fate/stay night.
Themes like power imbalance and how to overcome it are common. Kirito may seem overpowered compared to some of the early - game characters in Fate/stay night, but as the story progresses, the fanfictions often find ways to level the playing field. Another theme is cultural exchange. Since the two universes have different cultures, the fanfictions sometimes explore how Kirito's presence affects the Fate world's culture and vice versa. And the theme of redemption can also be found. For instance, if Kirito makes a mistake in the Fate world, he may have to go through a journey of redemption, which is something that is also seen in some of the Fate/stay night storylines.
The idea of destiny also plays a big role. In both Naruto and Fate Stay Night, destiny is a significant concept. In the fanfictions, it could be about whether Naruto characters can change the pre - determined fate in the Fate Stay Night world, or how the Fate Stay Night characters view the idea of 'becoming Hokage' which is Naruto's big goal.
Love and friendship are also common themes. The OC might form deep bonds with the existing characters from 'Fate Stay Night'. They could fall in love with a Servant or develop a strong friendship with a fellow master. In addition, the theme of destiny is often explored. The OC's presence might change the pre - ordained destiny of the 'Fate Stay Night' world, and they have to come to terms with the consequences of their actions on the overall fate of the story.
One common theme is the clash of different power structures. The magic and Servants of 'Fate Stay Night' against the vampiric powers in 'Hellsing'.
Love is a very common theme. Their relationship, which was complex in the original work, is often explored more deeply in fanfiction, showing different aspects of their love for each other.
Another theme is adventure. Writers might create scenarios where Rin and Archer go on quests together, facing various challenges that test their bond and abilities. This can range from battling new enemies to solving magical mysteries.
One common theme is the exploration of Archer's complex personality. The OC often serves as a catalyst for this exploration. Another theme is the power dynamic between Archer and the OC, especially if the OC is a mage or has some special ability. Also, there's often a theme of redemption or self - discovery for Archer through his interactions with the OC.
One popular kirito x fate stay night fanfiction is 'Kirito in the Fuyuki Grail War'. It combines the elements of Kirito's skills from Sword Art Online with the complex magic and character dynamics of Fate/stay night. Another one could be 'Kirito and Saber's Adventure', which often features interesting team - ups and battles as they face the challenges in the Fate universe. There are also some that explore a more romantic side of their relationship, like 'Kirito's Encounter with the Fate Maidens' where his interactions with the female characters from Fate/stay night are re - imagined in a unique way.
One common theme is the clash of different power systems. Percy has his own set of powers and abilities, and when he enters the Fate Stay Night world, there's a contrast and sometimes a combination with the magic and Servant powers there. Another theme is adaptation. How Percy adapts to the new rules, the new culture, and the new challenges of the Fate Stay Night universe.
Power and its consequences is also a common theme. Since Sakura has unique powers in the Fate Stay Night lore, fanfictions often explore how she deals with the power she has. For example, how it affects her relationships and her moral compass. Redemption is another theme, especially when dealing with Sakura's past and any mistakes or hardships she has faced.
One common theme is redemption. Since Medea has a rather dark past in the original work, many fanfictions explore her path to redemption, trying to atone for her past misdeeds.