Noelle could be a great addition. Her water magic is quite powerful and she has a complex relationship with both Asta and Yuno. She could be a source of both support and conflict in the fanfic. Another good character is Luck. His lightning magic and his rather unpredictable nature can add a lot of action and excitement to the story.
There are some authors who have a great following for their Harry and Asta fanfiction. These authors often post regularly and have a style that is both accessible and immersive. They might be good at creating complex plotlines that keep readers hooked from start to finish. You can usually find these popular authors by looking at the top - rated fanfictions in the Harry and Asta category.
Since lemon fanfics are inappropriate, we should focus on their general characteristics from the official story. Asta is highly determined and energetic, always striving hard despite his lack of magic initially. Yuno, on the other hand, is more calm and has a natural talent for magic. They both have a strong bond as rivals and friends.
The main character is Asta himself. Then there's Yuno, his rival who is extremely talented in magic. There's also Noelle Silva, a member of the Silva family who has water magic and is part of the Black Bulls with Asta. Captain Yami Sukehiro is also important. He leads the Black Bulls and is a strong magic - user. These characters play crucial roles in Asta's story.
It could be a rival magic knight. Maybe someone from a different squad who is jealous of Asta's rapid rise in the ranks and the attention he gets. They might think that by kidnapping him, they can make themselves look better or get rid of the competition.
Asta would likely bring a new level of determination to the Crimson Lions. His never - give - up attitude could inspire the team members during tough battles.
Asta could be brought into the High School DxD fanfic as a result of a multiverse - related event. In this case, different universes are colliding or being connected in some way. His presence would disrupt the power balance as his anti - magic is something that no one in the High School DxD world has really encountered before. He could end up training with the devils to learn more about their magic while also teaching them about the concept of anti - magic.