Toge Inumaki is important too. His special cursed speech ability makes him stand out. Also, the principal of the school, Masamichi Yaga, is likely to be important as he is in a position of authority and has an influence on Gojo and the other students. There could be other characters like the members of different clans that also play roles in the complex web of the story.
Chooki and Toxsa's dynamic in fanfiction can be really interesting. They could be depicted as a great team, with Chooki's bravery and Toxsa's intelligence complementing each other. For instance, in a battle, Chooki might charge forward fearlessly while Toxsa figures out the enemy's weak points from the side.
A fanfiction about Chooki and Toxsa could also be a coming - of - age story. They start off as young, inexperienced Tenkai Knights. As they grow, their relationship evolves. They might have a falling out over a misunderstanding, like a difference in opinion on how to handle a certain mission. But through this, they learn to communicate better and ultimately become even closer friends.
The dynamic between Guren and Beni is appealing. Guren is often brave and impulsive, while Beni is more level - headed. In fanfiction, this contrast can create interesting situations and interactions.