One idea for a fanfiction could be about Female Death mentoring The Kid in some unique way. Maybe she teaches him a special technique that was once known only to her. This could lead to an adventure where The Kid has to use this new skill to face a powerful enemy.
Another theme is self - discovery. The female character, in the presence of Kid, may start to understand her own powers or her place in the Soul Eater world better. It could be through training with Kid or just by observing his actions. This is shown in many fanfictions where the female character evolves throughout the story.
One great fanfiction could be about Death the Kid's adventures with Lemon in a parallel universe where they have to face new types of enemies. Maybe in this story, they discover a hidden power within Lemon that helps them in their battles.
One idea could be a story where Crona and Kid are forced to team up on a mission. They start off not getting along because of their very different personalities. Kid is all about order and symmetry, while Crona is more timid and has a darker past. But as the mission progresses, they begin to understand each other better and learn to appreciate their differences.
One popular Soul Eater female Kid fanfiction is 'Kid's New Partner'. It explores the relationship between Kid and a female character in an exciting adventure. The story has great character development and action scenes.
There's also 'Yin and Yang of Soul and Kid'. This story emphasizes their complementary qualities. Soul's more impulsive side is balanced by Kid's calculated moves. It's a story that not only explores their relationship but also how they influence each other's views on the world around them, and it's full of interesting dialogues and action scenes.
One great Soul Eater Kid x Crona fanfiction is 'The Bond Beyond Fear'. It beautifully explores their relationship in a post - series setting. The author does an amazing job of delving into Crona's insecurities and how Kid's presence helps them grow. Another good one is 'A Different Kind of Connection' which shows their relationship from a more comical side at first but then develops into a deep emotional bond. There are also some on Archive of Our Own that are worth checking out if you like this pairing.
A possible plot could be that Female Death tasks The Kid with protecting a powerful and mysterious soul. The Kid has to face many challenges and enemies who also want to get their hands on this soul. As he protects it, he discovers that there is a deeper connection between this soul and Female Death's past, which adds more layers to the story.
Friendship and loyalty are also prevalent. In many fanfictions, female souls form strong bonds with other characters. They rely on each other in battles and in their personal growth. This is important as the Soul Eater world can be very dangerous and having friends to count on is crucial.
In a fanfiction about female Crona, her backstory could be delved deeper. For example, we could see how she was treated in her early days in the world of Soul Eater. Perhaps she had some secret talents that were suppressed because of her upbringing. The story could then focus on her journey to discover and embrace these hidden abilities.