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.
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.
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 is still alive in the manga. The story keeps evolving with him at the center of the action. There have been many difficult situations, but he manages to overcome them without dying.
There are quite a few. You can check out some popular fanfiction platforms like Archive of Our Own. Some stories might focus on their relationship developing during a dangerous mission in the Black Clover world, where they discover new feelings for each other.
The main appeal is the potential of their relationship. Asta is this determined and energetic character, while Vanessa is more laid - back and mysterious. Their different personalities create a great dynamic for a love story.