What are some interesting ideas for a Highschool DxD Twin Fanfiction?

One idea could be to focus on the characters' relationships outside of the main plot. For example, how the students interact during normal school days, like study groups or after - school clubs. Another idea is to create an alternate universe where the rules of the dxd world are slightly different in the high school setting, which could lead to new adventures and challenges for the characters.

A third idea could be a fanfiction where Gaara becomes a devil himself. He could bring his ninja skills and his sand abilities into the devil society. This would change the power dynamics in the DxD highschool as he would be a very different type of devil compared to the existing ones, with his own moral code and way of doing things.

One idea could be to create an alternate universe where the main character has a different set of powers. For example, instead of the traditional Sacred Gear, they could have a power related to time manipulation. This would change the dynamics of battles and interactions with other characters.

A third idea could be a time - travel fanfiction. For example, a character from Highschool DxD travels back in time to the era of Bleach and meets Ichigo when he was still developing his powers. This could lead to some interesting interactions and changes in the timeline of both universes.

You could write about an OC who is a half - angel, half - devil. Their internal struggle between the two natures and how they fit into the world of Highschool Dxd, trying to find their place among the devils, angels and fallen angels. It could explore themes of identity and acceptance.

One idea could be creating a new character who is a transfer student with a unique power. For example, a character who can manipulate time in the Highschool DxD universe. This could lead to all sorts of interesting plot twists, like changing the outcome of battles or getting a peek into the past of the main characters.

One idea could be to explore how magecraft is integrated into the school curriculum in the Highschool DxD universe. Maybe there are special magecraft classes for the devils, angels and fallen angels. Another idea is to create a character who is a magecraft prodigy and see how they interact with the main characters like Issei. Also, a story about a lost or forbidden magecraft spell that the characters have to find or protect could be really engaging.

An interesting OC for a Highschool DxD fanfiction could be a half - angel, half - devil. Their internal struggle between the two natures would make for a great character arc. They could be trying to find their place in the world where angels and devils have their own agendas, and they don't fully belong to either side.

A cool fanfiction could also focus on a love story between a character from Highschool DxD and an exorcist. How they deal with their different backgrounds, duties, and the potential disapproval from their respective groups would make for an engaging plot.

You could write a fanfiction where the Akatsuki are summoned to the Highschool DxD world by a powerful magic user. They then get involved in the power struggles between the different factions. Maybe they side with the devils at first, but then realize that the angels also have some good points. The interactions between the Akatsuki members and the characters from Highschool DxD would be really interesting to explore, like how Sasori might react to the technology in the Highschool DxD world compared to his puppet - making skills.