They could be in a situation where they are accidentally transported to a different dimension. In this new world, they have to rely on each other's skills and the magic they possess. Noelle's water - based magic and Vanessa's thread magic could combine in unexpected ways to help them survive and find a way back home.
One possible fanfic could be about Noelle and Vanessa going on a magical adventure together. They might discover a new spell or a hidden part of the Clover Kingdom. Maybe they have to work together to defeat a powerful enemy that neither could face alone.
One possible fanfic could be about Noelle and Vanessa training together. They start off as just comrades in the Black Bulls, but as they train, they discover they have a lot in common. They both have their own insecurities and strengths. Vanessa might teach Noelle some of her more unorthodox magic techniques, and Noelle could show Vanessa her determination to improve. This could lead to a deeper bond between them as they grow to respect and admire each other more.
One idea could be a story where Asta and Vanessa go on a special mission together. They face a powerful enemy and have to rely on each other's unique abilities. Asta's anti - magic sword combined with Vanessa's thread magic could create some really cool battle scenes.
Another fanfiction could focus on their relationship in the context of a magic tournament. Charlotte is determined to show her strength, but she gets into trouble. Yami steps in to help her. This event makes Charlotte realize her feelings for Yami are stronger than she thought. They then start training together, and their relationship blossoms as they learn more about each other's fighting styles and pasts.
In the Black Clover manga, Yami doesn't meet his end. He continues to play a significant role and faces various challenges but manages to overcome them.
For Yami, it's important to capture his laid - back yet powerful nature. He has a unique way of speaking, often using casual and sometimes vulgar language. So, in the fanfiction, make sure his dialogue reflects that. Also, show his loyalty to his comrades and his love for a good fight. For Charlotte, her elegance and pride should be prominent. She is a strong mage but also has a soft side that she doesn't often show. Describe her magic in detail to give a sense of her power.
Once upon a time, in the world of Black Clover, there was a new mage in the Black Bulls. She was an OC named Lily. Yami noticed her unique magic right away. As days passed, he found himself always looking for her in the base. One day, during a mission, they got separated from the group. In the quiet forest, they started to talk more, sharing their dreams and fears. Yami was drawn to her kindness and determination. Soon, a spark of love began to grow between them.
A fanfic could also focus on how Noelle and Vanessa support each other emotionally. When Noelle has a setback in her training, feeling like she'll never be as good as some of the other mages, Vanessa is there to comfort her. Vanessa tells Noelle about all the times she herself faced doubts but overcame them. In return, when Vanessa has a bad day, Noelle uses her calm and steady presence to cheer her up. Their relationship grows as they become each other's pillars of support within the Black Bulls.