Well, it depends on the context of the light novel. It could have cheats related to leveling up quickly in a game - like scenario within the novel. For example, finding a hidden item that multiplies experience points. Or perhaps cheats for getting rare items or unlocking secret areas. Without reading the novel, it's hard to say exactly what the cheats are.
One cheat could be to really understand the different character traits and abilities in Naruto. For example, if you're writing a fanfiction where the main character has to face Sasuke in a battle, knowing Sasuke's Sharingan abilities and his combat style can help you create a more believable and exciting story. You can also cheat by studying the different jutsu and how they work. This way, you can create new and unique combinations of jutsu for your characters to use in your fanfiction.
I'm not sure specifically about a 'Lucius cheats on Harry' fanfic. Fanfic topics can be quite diverse, but this seems like a rather unusual and perhaps not very common plot. You might try searching on some large fanfic websites like Archive of Our Own, but it could be hard to find.
There might be some out there, but this is a rather non - canon and often controversial concept in the Harry Potter fanfiction world. Some people might write it to explore different relationship dynamics or create drama, but it goes against the normal pairings and character traits we know from the original series.
Well, it depends on what you specifically mean by 'cheats' in relation to Lily Potter fanfiction. It could be something as simple as her finding a loophole in a Hogwarts rule or a more complex concept like using a long - forgotten magic to outwit her enemies. To find relevant fanfiction, you can also join fanfiction communities and ask for recommendations. They might point you to some interesting stories that fit this theme.
I don't really support the idea of Snape cheating on Hermione as it goes against the original character dynamics in the Harry Potter series. However, there might be some fanfictions out there with such a plot. But it's important to note that these are often non - canon interpretations and can be quite controversial.