Well, 'The Enigmatic Monster OC in Highschool DxD' is also a notable one. In this fanfiction, the OC monster has some really cool and unique powers. It shows how the OC befriends some of the main characters from the original series and together they face new threats that weren't in the original story. It's a really fun read if you like seeing new characters added to the Highschool DxD universe.
First, come up with a really unique and interesting monster concept for your OC. For example, a monster that can control time or has the ability to merge with shadows. Then, think about how this OC will interact with the existing characters in Highschool DxD. Maybe they'll start off as an enemy to Issei but later become an ally. Also, create some exciting plot twists. Like, the OC might turn out to be related to one of the powerful beings in the series in a way no one expected.
There's a fanfiction called 'Ophis and the OC's Journey'. It's about their journey through different realms within the Highschool DxD world. The OC might be a new student in the school who has a hidden power that Ophis senses. As they travel together, they learn more about each other. The fanfiction might include elements like the OC teaching Ophis about modern human culture while Ophis shares her ancient knowledge with the OC. This exchange of knowledge and experiences can make for a really engaging read.
One great Highschool DxD OC Peerage Fanfiction is 'The Red Dragon Emperor's New Peerage'. It has an interesting plot where the main character, an OC, forms a unique peerage with unexpected members. The story also delves into the relationships between the OC and the other characters from the original series in a very engaging way.
One great Highschool DxD OC Beast fanfiction is 'The Rise of the OC Beast'. It has an engaging plot where the OC Beast character starts from being an underdog and gradually rises in power. The story also delves into the complex relationships within the Highschool DxD universe.
Well, 'A New Reincarnation in Highschool DxD' is also quite popular. In this fanfiction, the OC's reincarnation brings about unexpected changes to the story's dynamics. The author manages to create new relationships and story arcs that are both engaging and in line with the original Highschool DxD setting. It's definitely worth a read.
One great Highschool DxD OC x Asia fanfiction is 'The Unlikely Bond'. It explores a unique relationship between an original character and Asia. The story delves into how the OC, with their own special powers and background, comes to interact with Asia in ways that are both heartwarming and action - packed. It's a really engaging read if you like character - driven stories within the Highschool DxD universe.
One great fanfiction in this category is 'A New Bond'. It delves into the relationship between an original character and Rias in a really interesting way. The story develops their connection gradually, starting from a chance encounter and evolving into a deep emotional bond. The author does a wonderful job of fitting the OC into the Highschool DxD universe, making it feel like they were always meant to be there.
One great Highschool DxD OC Sitri fanfiction is 'The Sitri's New Ally'. It has an interesting plot where the OC, a Sitri, forms unexpected alliances within the school's supernatural hierarchy. The character development is well - done, and it keeps you engaged throughout.
One great Highschool DxD OC Angel fanfiction is 'The Angel's Ascent'. It has an interesting plot where the OC angel has to navigate the complex world of the DxD universe while hiding her true powers. It's full of action and some great character development.
There's also 'Phoenix's Redemption'. In this fanfiction, the OC phoenix character has a troubled past and is trying to find their place in the world of Highschool DxD. It has some great character development and action scenes.