What could be the plot in a Shirou time travel Excalibur fanfiction?

Perhaps Shirou time travels to a time when Excalibur was lost. His mission could be to find and retrieve the sword. Along the way, he meets various characters from different time periods who either help or hinder his quest, and through his journey, he discovers new aspects of his own identity related to the sword.

The plot could be that Shirou is summoned to the Highschool DxD world by accident. He discovers that his connection to Excalibur is stronger here. He is then forced to participate in the power struggles between the different factions. He uses Excalibur to protect the innocent students in the school from the more aggressive supernatural elements. Along the way, he might fall in love with one of the female characters in the Highschool DxD world, adding a romantic sub - plot to the story.

One consequence could be that it attracts unwanted attention. Since Excalibur is a very powerful weapon, it might draw the notice of powerful villains in the RWBY world. Another consequence could be that it changes the power dynamics among the characters. If Shirou is suddenly very powerful with Excalibur, it could make other characters feel overshadowed or they might have to adjust their fighting styles to work with him.

One possible fanfiction could involve Shirou being transferred to the Highschool DxD world and somehow obtaining Excalibur. Maybe he has to use it to defend the school from a new threat that the regular characters can't handle on their own. This would lead to some interesting interactions between Shirou's abilities and the magic and powers in the Highschool DxD universe.

Another plot could involve Shirou traveling to a future time where the world is in chaos due to misuse of the Grail's power. He has to find a way to reverse the damage and set things right. This would put him in a whole new set of challenges as he might face more powerful and corrupted enemies.

In RWBY fanfiction, Shirou using Excalibur could be a very interesting scenario. Maybe he uses it in a way that combines his own sword - fighting techniques with the unique combat styles of RWBY. For example, he might incorporate some acrobatic moves like the characters in RWBY do while slashing with Excalibur. And he could use the power of Excalibur to break through tough Grimm defenses, given that Excalibur is often depicted as a very powerful weapon in its original context.

Well, in RWBY fanfics involving Shirou and Excalibur, it often brings a unique blend of the Fate universe and RWBY's world. Shirou's connection to Excalibur can add a lot of depth. For example, his skills and the power of Excalibur might be portrayed differently in the RWBY setting. Maybe he uses it to fight against Grimm, and the way he wields it could be adjusted to fit RWBY's more acrobatic combat style.

Well, they could end up in a parallel universe. In this universe, the rules of magic are different. Shirou, Saber, and Archer have to figure out how to use their powers effectively. Saber might struggle at first because her usual combat style doesn't work as well. Archer could use his knowledge of different situations to help them adapt. And Shirou, being the main character, might have some sort of special connection to this new world that helps them survive.

Well, it could be that in a magical crossover world, Harry Potter somehow stumbles upon the fabled Excalibur. Maybe he's on a quest to defeat a new dark wizard who can only be vanquished with Excalibur's power. So, he has to prove himself worthy to pull the sword, just like in the Arthurian legends.

Well, one possibility could be that Naruto is somehow transported to a different realm where Excalibur exists. Maybe he's on a mission and stumbles upon it. He might initially be confused about this strange, powerful sword but then realize its significance. He could then face challenges from those who also want the sword, and his ninja skills would come in handy in protecting Excalibur.