What could be the plot of a Shirou Highschool DxD Excalibur fanfiction?

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.

A plot could involve Shirou being transferred to the Highschool DxD school. He quickly catches the attention of Rias and her peerage. His different style of combat and his unwavering determination might lead to some friendly rivalries within the group. He could also introduce some new concepts of magic that the DxD characters have never seen before, like his ability to reinforce objects. And he may find himself in the middle of the power struggles between the different factions in this new world.

A simple plot could be that Shirou is transported to the Highschool DxD world and he starts hearing the 'Kyrie Eleison' chant everywhere. He is intrigued and starts to research about it. He soon finds out that it has a connection to a hidden power in this world. As he delves deeper, he has to face challenges from different factions who either want to stop him from uncovering the power or want to use him to get to it.

A simple plot could be that Shirou accidentally activates Excalibur's time - traveling ability. He finds himself in Camelot and has to adapt to the new environment. There, he meets King Arthur and other knights, and his knowledge from the future helps him in various challenges while also learning about the true power of Excalibur.

One good fanfiction to check out could be 'The True Excalibur's Heir' which has an interesting take on a new character inheriting the power of the sword. It has great character development and some intense battle scenes.

Well, Highschool DxD True Excalibur fanfiction often explores new storylines within the established universe. It might focus on different characters' adventures with the True Excalibur. For example, it could show how a new character discovers the power of the sword and uses it to face challenges in the dangerous world of Highschool DxD. It may also introduce new relationships or rivalries centered around this powerful weapon.

One idea could be an OC who discovers an ancient and forgotten form of Excalibur. This could lead to a power struggle among the various factions in the Highschool DxD universe as they all vie for control of this newfound power. The OC would have to navigate through political intrigue and dangerous battles to keep the Excalibur safe.

One great storyline could be the discovery of a hidden power within Excalibur. For example, in some fanfictions, Excalibur might have a connection to an ancient magic that was long forgotten. This could lead to the main character having to learn how to control and harness this new power. Another interesting plot could involve Excalibur being stolen and the characters having to embark on a quest to retrieve it. Along the way, they might face various challenges and encounter new allies or enemies.

Shirou would fit in as a powerful and unique addition. His combat skills and magecraft would make him a formidable ally or opponent. He could use his projection abilities to create various weapons and tools, which would be very useful in the battles that often occur in the Highschool DxD world.

In the fanfiction, Shirou might meet a character in Highschool DxD who is also familiar with 'Kyrie Eleison'. They could bond over this shared knowledge. It could be a priest - like character who has been secretly observing the events in the DxD world. Together, they could try to use the power of 'Kyrie Eleison' to bring some sort of balance or peace to the often chaotic world of Highschool DxD.