One possible theme could be a friendship between Brightburn and Caitlyn. They might start off as strangers and gradually form a bond. Another theme could be Caitlyn trying to understand Brightburn's powers and where he comes from.
There could be a 'Brightburn Caitlyn' fanfic out there, but it might be a bit hard to find as it's not a very common pairing perhaps. You could start by looking at general fanfic search engines. When you search, make sure to use different combinations of the words 'Brightburn' and 'Caitlyn' like 'Brightburn x Caitlyn fanfic' or 'Caitlyn in Brightburn fanfic'. Also, check the tags on the fanfic websites carefully as they can help you narrow down your search to the exact type of story you're interested in, whether it's a romantic, action - oriented or horror - themed fanfic.
One great 'Brightburn' fanfic is 'The New World Order in Brightburn'. It explores an alternate reality where Brandon's powers are discovered earlier by the government. Another interesting one is 'Brightburn: The Redemption Arc' which delves into the idea of Brandon trying to use his powers for good after causing so much destruction.
Sure is. Brightburn originated from a comic-inspired idea that was later developed into a story for the big screen. The comic provided the foundation for the characters and plot.
First, understand the characters well. Know that Brightburn has a darker nature compared to Superman. Then, come up with an interesting plot. For example, a plot that involves a power struggle between them. You can also add some unique elements to the story, like a new villain who targets both of them because of their different yet powerful natures.
First, think about the aspect of 'Brightburn' that interests you the most. Is it Brandon's character development? Or the dark and twisted nature of his powers? Then, come up with a unique plot. For example, you could write about what would happen if Brandon met another super - powered being. Also, make sure to stay true to the tone of the original movie.