Sakura could be really interesting. She might be confused at first by Menma's presence, thinking he's some kind of impostor Naruto. But as she gets to know him, she could see his unique qualities and might even develop a friendly rivalry with him. Another interesting character could be Kakashi. He would be observing Naruto and Menma's interactions closely, maybe even giving them some special training to help them work together better.
The 'Menma Kills Naruto Fanfic' is likely a piece of fan - made literature that goes against the normal narrative of the Naruto series. Fanfics often explore what - if scenarios. In this case, perhaps the author was inspired by a different interpretation of Menma's character. Maybe in this fanfic, there are some underlying reasons for Menma to kill Naruto, such as being manipulated by a greater evil or having some deep - seated jealousy or grudge that is unique to this fictional version of the story.
Some 'Menma Naruto' fanfictions focus on his relationship with his parents. For example, a story could be about how Menma tries to understand his father's legacy while dealing with his own identity crisis. It delves deep into his character and the complex world of Naruto's family.
One common theme is friendship. Since Naruto and Menma are often portrayed as having a special connection, their friendship is explored in many fanfictions. Another theme is power. How they develop their powers, use them together or compete with each other in terms of power is also frequently seen. Family is also a theme, as they both have complex family relationships in the Naruto universe.
There could be, but I would caution against seeking out 'lemon' fanfiction as it may not align with ethical or respectful consumption of media. Instead, consider exploring regular fanfictions that develop the characters of Menma and Hinata in a creative and meaningful way, such as their adventures together or how they support each other.
Naruto could be a great character to pair with Menma. Their personalities could create an interesting dynamic. Naruto's determination and Menma's more gentle nature could complement each other well in a story about friendship or even a budding romance.
Another good idea is a slice - of - life menma fanfic. It could focus on a day in her life, like going to school, hanging out with friends, and dealing with typical teenage problems such as crushes and schoolwork.
Their relationships could develop through training together. As they spar and learn new techniques, they start to respect each other's skills and grow closer.
I'm not sure who the absolute best is, but some authors who are quite popular in the Naruto Menma fanfiction community are those who really capture Menma's character well. For example, some authors focus on his internal struggles and how he deals with being in Naruto's shadow in a way that feels very real.
One idea could be a story where Menma discovers a rare and powerful Pokemon that no one has ever seen before. This Pokemon could have unique abilities that help Menma in battles and adventures.