One of the popular themes could be friendship exploration. In the context of Andrew and Nick, it might show how their relationship deepens in unique ways. Another could be self - discovery. They might learn more about themselves through their interactions. Also, growth is a common theme. They could grow as individuals while also growing closer to each other in the fanfiction.
Well, to start writing a Big Mouth Andrew x Nick Yaoi fanfiction, you need to do some brainstorming. Think about what kind of relationship you want to portray between them. Is it a slow - burn romance or a more instant connection? Then, do some research on the world of Big Mouth if you need to. After that, create an outline. This could include the main events in the story, like a big argument they have and how they resolve it. Once you have the outline, start writing the opening paragraph, which should grab the reader's attention, like starting with an exciting moment between them.
Since we don't have much information about 'big mouth story', it might be a story that revolves around the idea of communication and the consequences of talking too much. It could be about how a person's big mouth affects their relationships, whether it's with friends, family, or in a work environment. For example, in the story, the character with a big mouth might lose friends because they can't keep secrets, or they might get in trouble at work for gossiping. It could also be a story that uses the concept of a 'big mouth' metaphorically, perhaps representing a loud or outspoken group or community within the story.
One moral could be to think before you speak. Just like in the story where the boy spread false rumors without thinking. If he had paused and considered the truthfulness of what he heard, a lot of trouble could have been avoided.