I really like 'True Excalibur: A New Beginning'. This fanfiction starts by exploring the lost history of the True Excalibur in the Highschool DxD world. It gradually builds up a new adventure for the main characters, and the way it weaves the sword's power into the story is quite engaging. It's full of twists and turns that keep you hooked.
There's also 'Rise of the True Excalibur Wielder'. In this one, the main character discovers the True Excalibur in a very unexpected way. The story then follows their journey as they learn to master the sword's power while dealing with the various factions in the Highschool DxD universe. It has a good balance between action and character relationships.
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 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.
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.
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.
Sirzechs Lucifer can also be a popular character in these fanfictions. His power and knowledge can play a significant role when it comes to Excalibur. For instance, he might know some secrets about Excalibur's true nature that others don't. He could be involved in a plot where he guides the main characters in their understanding and use of Excalibur. Also, Xenovia, with her own connection to holy swords, can be an important character. Her experiences with other swords can shape her relationship with Excalibur in fanfictions.
To create a compelling OC, consider their abilities in relation to Excalibur. Maybe they have a special power that only activates when they are in close proximity to the sword. Or they can communicate with the spirit of Excalibur. Their appearance should also be unique. It could be a mix of modern and medieval styles, like wearing a school uniform with a knight's cape. This visual aspect will make them stand out.
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 fanfiction could be where the OC has a unique power that Akeno is initially intrigued by. For example, the OC might have the ability to control light in a different way than the devils in the Highschool DxD universe. This could lead to a series of adventures where Akeno and the OC team up to face various challenges. They could start off as just acquaintances but gradually develop a deeper bond as they fight side by side.
One great Issei and Koneko fanfiction is 'The Bond of Opposites'. It delves into their relationship in a really interesting way. It shows how Issei's brash nature and Koneko's quiet demeanor play off each other.
One great Issei and Ophis fanfiction could be where they team up to face a new powerful enemy. In this type of story, their unique abilities combine in interesting ways. For example, Issei's boosted gear and Ophis's dragon powers could create some really cool fight scenes. It might also explore their relationship further, perhaps showing how they grow to trust each other more on a deeper level.