One idea could be exploring an alternate timeline where the main characters have different allegiances. For example, Sasuke could side with Orochimaru permanently and Naruto has to find a way to bring him back without fighting. Another could be a story where the Akatsuki are actually working for a greater good that was misinterpreted, and Naruto teams up with them to fight a common enemy.
Well, a cool plot might be if Naruto somehow gets trapped in the world of the dead during the war and has to find his way back while also learning secrets about the past from the dead shinobi. Or perhaps a fanfiction where all the ninja villages are forced to merge into one due to a new, extremely powerful enemy threat, and Naruto has to deal with the chaos and politics within this new mega - village.
A possible plot for Naruto Shadow of War fanfiction could be centered around a new type of jutsu that is discovered during the war. This jutsu has the power to either end the war quickly or make it much worse. Naruto, being the main character, has to figure out how to control or stop this jutsu. He might have to team up with unlikely allies, like some of the minor characters who have their own motives and secrets related to this new jutsu. It could also involve a race against time as the enemy forces are also trying to harness the power of this jutsu for their own evil purposes.
One idea could be Bruz's backstory before he became a part of the story in the game. Maybe he had a family or a different life goal that was shattered by the events leading to the war. Another could be a 'what if' scenario where Bruz didn't turn evil and instead became a key ally in the fight against the real enemies.
Another plot could focus on an orc's rise to power within the Uruk - hai hierarchy. This orc could be different from the others, having unique skills or a different way of thinking. He has to outwit his rivals, make strategic alliances, and deal with the power - hungry captains who don't want to see him succeed.
You could write a fanfiction where Talion travels to different regions not explored in the game. He might encounter new cultures and races, some friendly and some hostile. This could lead to him having to adapt his combat and survival skills. And perhaps he discovers a long - lost artifact that has the power to either greatly enhance his abilities or put him in a dangerous position as others seek to take it from him.
One interesting plot could be a character with shadow release power being able to manipulate the shadows of ancient beasts. This would create a whole new level of challenges and adventures as they try to control these powerful and unpredictable forces.
One interesting plot idea could be Naruto using his shadow clones to time - travel back to the era of the First Hokage. He could then use his modern - day knowledge and shadow clone jutsu to help shape the early history of the Hidden Leaf Village.
One plot idea could be that Talion and Shelob form an uneasy alliance against a greater evil in Mordor. They start to understand each other's motives and powers more deeply as they fight side by side.
A really interesting plot for 'Game of Thrones and Shadow of War fanfiction' would be if the Nemesis system from 'Shadow of War' was applied to 'Game of Thrones'. Imagine if every time a character in 'Game of Thrones' wronged another, that wronged character became stronger and more vengeful like the orc captains in 'Shadow of War'. So, for instance, if Cersei wrongs Tyrion too much, Tyrion could become a super - intelligent and powerful 'Nemesis' figure, plotting his revenge in a much more complex and dangerous way than in the original series. This would add a whole new layer of drama and power - play to the 'Game of Thrones' world.
One idea could be exploring the backstory of a minor character in the game. For example, a Uruk-hai who has a change of heart and decides to fight against Sauron's forces instead. It would add an interesting twist to the existing lore.
One idea could be a battle where Naruto uses his unique jutsu in a strategic way inspired by the Art of War. For example, he could use the concept of 'know your enemy' to outwit an opponent who has a new and powerful ability. He might study their fighting style beforehand and then use his own skills to counter it effectively.
One idea could be a crossover where Naruto characters are brought into the Asterisk War world. They could participate in the Festas and show off their unique ninja skills. Another could be a story where a character from Asterisk War discovers a hidden Naruto jutsu and tries to master it. Maybe a story about how the values of the Naruto world, like friendship and perseverance, influence the characters in Asterisk War.