What are some interesting ideas for Ichigo Highschool DxD fanfiction?

One idea could be that Mugetsu Ichigo somehow ends up at the High School DxD school and has to deal with the different factions there. He might use his unique powers to solve some of the school's problems.

One idea could be that Ichigo is somehow transported to the High School DxD world and has to deal with the Devils and Angels there. He might use his Soul Reaper powers in unique ways to solve the problems in this new world.

A fanfiction could focus on Ichigo attending the school in Highschool DxD. His presence would surely disrupt the normal balance. He might not be interested in the whole 'devil' and 'angel' thing at first, but gradually get involved. He could also introduce some of his Soul Reaper training methods to the students there, which would be very different from what they're used to.

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.

Another interesting concept could be a character swap. Imagine Ichigo from Bleach attending the school in Highschool DxD. How would he interact with the devils and other supernatural beings there? He might use his Soul Reaper powers in unexpected ways within the Highschool DxD universe.

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 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.

Another interesting concept is to set the fanfiction in an alternate universe. In this universe, the twins could be from a different race or have a different upbringing. This would allow for a fresh take on their characters and how they fit into the Highschool DxD world. For example, they could be raised in a human - devil hybrid society, which would give them a different perspective on the ongoing conflicts in the series.

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.