I'm not entirely sure as it could be a very specific fan - created story. It might be a fanfic where a character named Coco and Miguel are involved in a murder - related plot. However, without reading it, it's hard to say precisely.
There are miguel fanfics that focus on his relationships. Maybe he forms a deep friendship with another character, and the story delves into how they support each other through tough times. These kinds of fanfics can add a lot of depth to his character.
One common theme is his struggle with identity. Given his complex character, many fanfics explore how he comes to terms with who he is. Another theme is his relationships, whether it be with friends, family or foes.
I'd recommend 'Miguel O Hara: Origins'. This fanfic delves deep into his backstory, which is really interesting. It has a lot of details about how he became the person he is, and the writing style is engaging, making it a good starting point for those interested in miguel o hara fanfic.
Friendship is a very common theme. Many fanfics explore how Marco and Miguel become friends, what they do to maintain their friendship, and how it withstands various challenges.
One possible theme is the finality of death and how it impacts those left behind. Miguel's death would force his family and friends to confront the reality that he is gone forever, and they have to find a way to move on without him.
The exploration of the afterlife itself is a theme. Miguel and Hector could go on adventures within the Land of the Dead, uncovering secrets and learning more about the nature of the afterlife together. This could involve meeting other spirits, solving mysteries, and growing closer as they do so.
There's also 'Miguel and Hiro's Adventure'. In this fanfic, they team up to solve a mystery in their city. Miguel's street - smart skills and Hiro's technological genius complement each other, leading to an exciting and action - packed journey.
Another theme is self - discovery. As they interact, both Miguel and Hiro often discover new aspects of themselves. For example, Miguel might find a new interest in technology through Hiro, and Hiro might become more street - savvy because of Miguel.