Please recommend books about the Biafran War.

I’ve been trying to read more about the Biafran War, but I haven’t found the right books yet. I don’t want straight-up history books because they’re too boring (I don’t think boring is the right word) for me. I’m looking for a firsthand account, something like a diary but told in a storytelling format. Does that make sense? Also, why weren’t we taught this in schools? Seriously, is there an actual reason?