A godlike Naruto in a Fate Stay Night fanfiction could be a protector. Given his nature to protect his friends and those he cares about, he'd likely see the innocents caught in the crossfire of the Grail War and step in. He could use his powers to shield them from harm. His Nine - Tails chakra could act like a powerful shield against magical attacks. And he'd probably try to find a more peaceful solution to the conflict rather than just fighting for the sake of winning the Grail.
In such a fanfiction, Naruto might play the role of an outsider who changes the game. He doesn't come from the same world as the characters in Fate Stay Night, so he'd bring a fresh perspective. His ability to make friends easily could lead to him forming a united front against the more malevolent forces in the Grail War. His transformation abilities, like his Tailed Beast Mode, would be a terrifying sight for his enemies and a source of hope for his allies.
If Naruto were in Fate Stay Night as a godlike being, he would likely change the power dynamics significantly. His vast chakra reserves and powerful jutsu could overpower many of the Servants. For example, his Rasengan might be able to break through even the strongest magical defenses. He could also use his shadow clone jutsu to outnumber his opponents in battle, which is a strategy not typically seen in the Fate Stay Night universe.
In such fanfiction, a common concept is the OC's role in the Holy Grail War. An OC with godlike abilities might change the very nature of the war. For example, if the OC has the power to nullify all magic for a short period, it would turn the tide of battles completely. Additionally, the moral and ethical dilemmas faced by the OC can be explored. Since they have such great power, they might struggle with using it for good or being tempted by darker motives. Moreover, the design of the OC, both in terms of appearance and personality, is an important aspect. A well - designed OC with a distinct personality can add a whole new dimension to the Fate Stay Night story.
The masters would probably be very confused at first. They are used to summoning heroic spirits with a certain set of characteristics and Naruto's appearance and abilities would be completely foreign to them. For example, Shirou might be shocked and immediately on guard, trying to figure out if Naruto is a threat or an ally.
I'm not entirely sure as it could cover a wide range of things. It might be a fan - made story that combines elements from Naruto and Fate Stay Night in a rather strange or comical ('troll') way. Maybe it has Naruto characters in the Fate Stay Night world dealing with magic and the Holy Grail War in unexpected ways.
One common theme is the power struggle. Both Naruto and Fate Stay Night have characters with different levels of power, and in fanfiction, often there are stories about characters trying to gain more power or deal with the power they have. For example, Naruto characters might have to adapt to the magic - based power system in Fate Stay Night.
One interesting concept could be the unique abilities of the Godlike Gamer OC. Maybe they have skills that are different from the regular Fate Stay Night characters, like being able to manipulate game - like elements in the Fate universe.
The concept of Naruto being a Master in the Fate/stay night world is also very engaging. He could summon Servants and form unique partnerships. His understanding of loyalty and friendship from the Naruto world would influence how he interacts with his Servant. It often leads to heartwarming and action - packed 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.
A fascinating plot aspect in such fanfiction is the idea of the Holy Grail War in the Naruto universe. Picture the ninja villages competing for the Grail. The characters from Naruto would have to form alliances and strategies similar to what happens in Fate Stay Night. Also, the concept of summoning Servants in the Naruto world. What if Naruto or Sasuke could summon a powerful Servant? How would they interact? And how would the Servant adapt to the ninja world? These are all really interesting plot elements.
He could be a protector. His godlike powers would make him extremely powerful, so he could safeguard Inuyasha and his friends from powerful enemies.