Animosity
Author, I have found so far a fantastic idea. There was only one point that bothered me a little: the fact that there was no test for the healing factor and that the mutation occurred in a few months. If possible, so that your story is more reliable, I advise you to change it. Ex: after 2 years of tests, without discovering anything wrong, it was distributed to the population, but the mutation started to occur after 3 years of global distribution. Or something like that, I'm not a writer, but a well-researched and truthful story always tastes different. Well, even if you don't change I thought your story idea was very good, even more so because I didn't see any signs of a system, which only makes it seem like a lazy story. Anyway, I hope this is as great a book as it appears to be.[img=recommend]