I don't know who the author of 'the lemons fanfic' is. There are so many fanfic authors out there and without more information it's impossible to determine.
It's hard to say exactly. Sometimes names in fanfic are picked for no particular reason or based on some inside joke among the fan community. Maybe lemons were chosen to symbolize something unique in that particular story.
Obviously, Lucy Lemons is a main character. But often, there can be her best friend, like Lily, who is always by her side in the fanfic. There might also be a mentor figure, perhaps an old lady named Mrs. Green who gives her advice.
The main characters are Wolf and Lemons, of course. Wolf might be depicted as a strong and brave character, perhaps with some mysterious past. Lemons could be more of a clever and resourceful type.
Typically, the main characters in sakura lemons fanfic could be the ones who are most closely associated with the sakura and lemons elements. It might be a character named Sakura who has a special connection to the sakura trees, and a character named Lemon who has unique abilities related to lemons.
It depends. While 'lemons in fanfic' are not appropriate for all audiences, some might argue that in the context of adult - only fanfic communities, where there are proper age - verification and consent mechanisms in place, it could be considered within the realm of acceptable content. But in a broader sense, especially when considering the general fanfic - reading public which includes young people, it's not appropriate.
Since it's a Naruto fanfic, apart from Naruto, characters like Sasuke could also be main characters. They might be involved in the story regarding the lemon seeds. Maybe Sakura could also play an important role, especially if the lemon seeds have something to do with her medical skills or her role in the village. However, without actually reading the fanfic, it's hard to be certain about the main characters.
Leo Valdez is often a main character as well. His skills as a mechanic and his ability to control fire are really important. He might be the one building new weapons or devices for the group. Frank Zhang, with his shape - shifting ability, could also be a main character. He can transform into different animals which can be very helpful in different scenarios, like sneaking into a place as a small animal or fighting as a large and powerful beast.
Charlie, on the other hand, is Bella's father. He is usually portrayed as a caring but somewhat reserved man. In the fanfic, he could be the stable figure in Bella's life, but also have his own story arcs, like dealing with his job as a police officer and his relationship with his daughter in the context of the fanfic's events.
One popular character might be a dragon with a unique color or pattern that stands out. For example, a dragon with iridescent scales that has some special power related to it. Another could be a character who is an outcast from their tribe but has a heart of gold. They often get into all sorts of adventures and make friends with other misfits.
I'm not sure specifically what 'the lemons fanfic' is about as there could be many fanfics with that name. It might be related to some sort of citrus - themed story, or perhaps it's a fan - created work within a particular fandom that uses 'lemons' as a key element, symbol, or character name.