A cool plot might be that the Akatsuki from Naruto somehow get involved in the Fate Grand Order. They could be after the Grail for their own purposes, like resurrecting their dead comrades or achieving world domination in the Fate universe. Naruto, being in the wrong place at the wrong time, has to stop them while also dealing with the rules and challenges of the Grail War.
Another plot could involve Naruto being mistaken for a new type of heroic spirit. He then has to prove himself in the Grail War while also trying to find a way back to his own world. Along the way, he could meet some of the Fate characters and learn about their backstories, which would be a great way to combine the two universes.
One idea could be Emiya in an alternate timeline where he has to team up with his younger self. It would be a journey of self - discovery and mentorship. Another could be Emiya getting trapped in a dream world created by a powerful mage, and he has to find his way out while facing his inner demons.
One plot idea could be that Naruto is summoned into the Fate Grand Order universe. He teams up with Mash to fight against the various Servants who have gone berserk. Naruto's unique jutsu like Rasengan could be a new and powerful attack in that world.
One idea could be to have the Servants from Fate Grand Order interact with the events and characters of Fate Zero in unexpected ways. For example, Mash could end up in the middle of the Fourth Holy Grail War and try to prevent some of the tragedies from happening. She might team up with a young Kiritsugu, using her knowledge from the future to guide him. Another could be that a Grand Order Servant like Artoria Alter gets involved in the war and changes the power dynamics completely, as her dark and powerful nature would be a wild card in the already complex Fate Zero setting.
A crossover with the Naruto universe could also be exciting. Imagine Servants like Archer using their skills against ninjas. Naruto characters might be intrigued by the concept of Servants and their powers. It could lead to a story where they exchange combat techniques and learn from each other.
One idea could be creating an OC who is a time - traveling mage from a future where the Grail Wars have had catastrophic consequences. This OC could be on a mission to change the past to prevent the disasters. Another idea is an OC that is a hybrid of a Servant and a human, with unique abilities and a complex backstory that ties into the existing lore of Fate Grand Order. Maybe an OC who was experimented on by the mages in Chaldea and gained strange powers as a result.
One interesting crossover could be the use of Naruto's ninjutsu in the Fate Grand Order universe. For example, Naruto's shadow clone jutsu could be used in battles within the Fate Grand Order. And Mash could learn some of these skills, adding a new dimension to her combat abilities. It would be really cool to see Naruto's energy and determination influence the characters in Fate Grand Order.
One interesting concept could be the fusion of Naruto's ninja abilities with the Servant system in Fate Grand Order. For example, seeing Naruto characters as Servants with unique classes and abilities. Another concept might be the exploration of different timelines or universes where both Naruto and Fate Grand Order worlds collide, leading to new storylines and character interactions.
Sure. 'A Day in Chaldea' is a great fanfic. It shows the daily life of the servants and the master in Chaldea in a very humorous way. You can feel the warm and interesting atmosphere among them.
There are fanfictions that put Mash in different roles within the Chaldea organization. Some might show her taking on a leadership position temporarily. In these stories, she has to make tough decisions and deal with the political and strategic aspects of running Chaldea. Also, there are Mash fanfictions that explore her relationships with other Servants in a more in - depth way, like her friendship with certain heroic spirits.
Well, one popular 'Fate Grand Order' lemon fanfic might be those that explore the relationships between different Servants in unique ways. For example, some could focus on the romantic and somewhat spicy interactions between a Master and a particular Servant. However, it's important to note that such fanfics often deviate from the official storyline of the game and are more of a creative and sometimes risqué take on the characters.